CSP-H-2 BASIC HANDBOOK OF MAINTENANCE INSTRUCTIONS FOR MDHI 369H HELICOPTERS

MD Helicopters, Inc.

CSP−H−2

500 Series - Basic HMI

winding (terminal board stud C) of the

When performing as a generator, the starter/

starter/generator. During the time the START

generator has a maximum continuous duty

switch is depressed, the voltage regulator

rating of 30 volts, 150 amperes, over a range of

generator field circuit is open, so the starter

7200−13,000 rpm.

operates as a series motor.

NOTE: A similar and alternate starter/genera−

The generator system consists of the starter/

tor (Bendix 30B69−15−A) may be installed

generator, reverse current relay, voltage

to replace the standard starter/generator

regulator, an overvoltage relay, GENERATOR

(Lear Siegler (LSI) 23032− 020). Following

OUT light and the ammeter.

paragraphs provide maintenance informa−

tion for the standard starter/generator.

Generator operation is controlled by the

Starter limitations for engine compressor

GEN−OFF switch.

cleaning are given in Section 2.

At flight idle rpm and above, the voltage

A. Starter/Generator Removal

regulator automatically maintains the correct

generator output voltage by varying the

(1). Check that all electrical power is OFF.

generator field current.

(2). Disconnect electrical wiring from

The generator field circuit is protected by a 15

starter/generator terminal block;

ampere circuit breaker on the instrument

insulate wiring terminals. Reinstall

panel.

nuts and washers on studs.

When an overvoltage condition occurs, an

(3). Loosen mounting clamp that secures

overvoltage relay is energized by the voltage

starter/generator to mounting flange

regulator. The overvoltage relay opens the

and remove starter/generator.

switch circuit of the reverse current relay to

(4). Remove four nuts and washers; then

remove generator output from the bus.

remove mounting flange with gasket.

The reverse current relay prevents the battery

(5). Install a suitable protective closure over

from discharging through the generator when

opening in mounting flange.

the output voltage falls below battery voltage.

B. Starter/Generator Inspection

Electrical systems operate from the battery

when the generator is OFF and the power

(1). Preliminary Procedure

selector switch is at BATTERY.

(a). Remove lubricant from splines of

A terminal block on the starter/generator

drive shaft. Clean vibration dampen−

provides for connection of electrical wiring and

er.

houses a radio frequency−interference filter.

(b). Remove brush cover and fan cover.

Access to the brushes in the starter/generator

is provided by a brush cover that is rotatable

(c). Use clean, dry, compressed air to

in increments of 90 degrees.

blow out brush dust.

Page 19-39

Revision 15

MD Helicopters, Inc.

CSP−H−2

500 Series - Basic HMI

REVERSE CURRENT

ENGINE ACCESSORY

RELAY

GEARCASE

GASKET

ENGINE HARNESS

DISCONNECT

MOUNTING FLANGE

(NOTE 5)

OLEO SUPPORT

FITTING

MOUNTING CLAMP

TERMINAL BLOCK

GEN. OUTPUT

(AMMETER)

START RELAY

GROUND CONNECTION

CALIBRATION

RESISTOR (R3)

FIREWALL

STA 124

FAN COVER

DAMPER AND DRIVE SHAFT

BRUSH ACCESS COVER

END BELL

START/GEN. G300

(NOTE 4)

O−RING

DRY SPLINED

DRIVE SHAFT

(NOTE 2)

DAMPER

TERMINAL BLOCK

WIRE

CLUTCH

BACK PLATE

LOOKING FORWARD

P107B10

WET SPLINED

(ROTATED)

VIBRATION

DRIVE SHAFT

DAMPENER

(NOTE 6)

(NOTES 1, 3)

ARMATURE

COMPANSATING

INTERPOLE

SERIES

SHUNT

NOTES:

DAMPENER CLUTCH MUST EXERT SPRING PRESSURE

RADIO NOISE

AGAINST BACK PLATE WITHOUT GAP BETWEEN CLUTCH

(RFI) FILTER

AND PLATE. MINIMUN CLUTCH SPRING THICKNESS

0.015 IN. (0.381 MM); MINIMUM BRONZE FRICTION

FACING THICKNESS IS 0.010 IN. (0.254 MM) ON PLATE.

C+ B+

A+ D

E−

AT INSTALLATION, LUBRICATE SPLINES WITH GREASE

21, TABLE 2−4).

LSI MODEL 23032−20 ONLY.

LSI MODEL 23032−20 IS SHOWN ON THIS ILLUSTRATION;

BENDIX 30869−15−A IS SIMILAR.

PROPER MOUNTING FLANGE MUST BE UTILIZED TO

INSURE PROPER SPLINE DEPTH.

WET SPLINE STARTER GENERATOR. FOR CONVERSION

FROM DRY SPLINE TO WET SPLINE STARTER−GENERATOR,

REFER TO MDHI LETTER HL−72.

30−111F

Figure 19-15. starter/generator Replacement and Repair

Page 19-40

Revision 15

MD Helicopters, Inc.

CSP−H−2

500 Series - Basic HMI

(2). Exterior Inspection

SPRING

Replacement of a dampener

CAUTION

clutch or back plate is required

SLOT IN BRUSHES

if it does not meet following requirements.

(MAX WEAR POINT)

(a).

Check that dampener clutch exerts

pressure against dampener back−

END BELL VIEW

plate. Weak spring on clutch or gap

between these parts is not allowed.

30−112

(b).

Inspect dampener clutch for cracks,

warpage, loose rivets and excessive

Figure 19-16. Starter/Generator Bushing

wear on spring surface that mates

Wear Limits

with dampener back plate. Minimum

spring thickness is 0.015 inch (0.381

C. Starter/Generator Repair

mm).

NOTE: Complete overhaul instructions with

(c).

Inspect dampener back plate for

parts breakdown for the starter/generator is

cracks and bronze friction facing for

available from the Power Equipment Divi−

wear. Minimum facing thickness is

sion of Lear Siegler, Inc. (Ref. Table 2−15).

0.010 inch (0.254 mm).

Instructions for maintenance of generator

brushes and for testing of a removed starter/

(d).

Check splines on drive shaft for wear.

generator are the only repair information

provided in this paragraph.

(e).

Check fan for looseness on hub and

for cracked or bent condition.

(1). Removing Brushes

(f).

Inspect terminal block for cracks,

(a). Remove the four screws that secure

breaks, loose or damaged terminal

the fan cover and brush access cover

studs, and loose electrical connec−

to the generator end bell; remove fan

tions.

cover.

(g).

Inspect starter/generator housing for

any signs of damage, and inlet and

(b). Remove the screw from the lead

outlet blower screens for clogging.

terminal of each brush set and lift

out the brush sets.

(h).

Inspect mounting clamp and mount−

ing flange for condition, and mount−

(2). Checking Brush Spring Tension

ing flange attaching hardware for

security.

(a). Remove brushes from starter/genera−

tor.

(3). Interior Inspection

(b). Cut a groove down the center of both

(a). Inspect commutator for pitting,

edges and across the bottom of a new

scoring or burned areas.

brush. When prepared in this man−

ner, the brush will have a continuous

(b). Check brushes for cracks, chips,

groove around three sides.

frayed leads and loose shunt connec−

tions. Replace brushes if remaining

allowable wear (Ref. Figure 19−16)

(c). Place a fine wire around the brush in

might be exceeded before next

the groove; then insert the brush in

scheduled inspection.

one of the brush holders. Tie the two

ends of the wire together to form a

(c). Check brush holder and end bell for

loop and attach a fish−type spring

cracks and warpage.

scale that is graduated in ounces.

Page 19-41

Revision 15

MD Helicopters, Inc.

CSP−H−2

500 Series - Basic HMI

(d). Raise the brush by the scale until the

(4). Running−in Brushes and Testing

lower end of the brush is even with

starter/generator

the bottom edge of the brush holder.

When in this position, the brush

(a). Connect starter/generator and test

spring tension should be between 32

equipment as shown in Figure 19−17.

and 48 ounces. Take an average of

Mount starter/generator securely in

several readings. If the spring

suitable vee blocks.

tension is out of this range, replace

the spring.

Be sure switch Sl is OFF. Do not

CAUTION

(e). Raise the brush by the scale until the

exceed 14− 16 volts direct− cur−

lower end of the brush is even with

rent input; starter/generator may be dam−

the bottom edge of the brush holder.

aged.

(3). Replacing Brushes and Preliminary

(b).

Start variable direct−current genera−

Seating

tor and adjust output to 14−16 volts.

NOTE: New brushes must be properly seated

on the commutator surface. Although the

(c).

Connect 24 Vdc power supply.

brushes are of the instant− filming type,

they should be sanded and run−in for proper

(d).

Adjust the 25−ohm potentiometer to

seating before full load is applied to the

3 ohms using the multimeter; then

starter/generator. Failure to properly seat

connect potentiometer into test

the brushes can result in excessive sparking

circuit.

that will cause burning and pitting of the

commutator.

(e).

Turn switch S1 momentarily ON,

(a).

Place a strip of grade 5/0 or finer

and then OFF. Observe direction of

sandpaper (9, Table 2−4), slightly

the starter/generator shaft rotation.

wider than the combined width of the

Rotation should be CCW when

two brush halves, around the commu−

viewing drive end of generator.

tator with the sand side out. Cut the

sandpaper strip to 0.125 inch (3.175

(f).

Turn switch S1 ON. Note that drive

mm) less than the commutator

shaft rotates freely and that genera−

circumference. Secure one end of the

tor output is indicated on meter M1.

sandpaper strip to the commutator

Adjust 25−ohm potentiometer until

surface with masking tape so that

meter M1 indicates approximately 1

the taped end will lead in the direc−

ampere. Meter M2 should indicate

tion of rotation, and the other end

25−35 amperes at this time. Continue

will remain loose.

operation of starter/generator while

observing the sparking (commuta−

(b).

Install the brushes in place against

tion) at the brushes. As brushes wear

the sandpaper and set the brush

in, the sparking should decrease to

springs in position. Carefully rotate

pinpoints.

the armature by hand in the normal

direction of rotation (Ref.

Figure 19−16) until a full seat is

(g).

Turn off all electrical power and

obtained on each brush. Do not sand

inspect the brushes for proper

excessively.

seating. Brush faces should show

evidence of seating of 90 percent in

(c).

Lift the brushes, and remove the

axial direction and 100 percent of the

sandpaper. Remove all carbon dust

axial contact should show evidence of

with dry, compressed air, connect the

contact in the direction of rotation.

brush wire terminals, and proceed

Blow out all brush dust with clean

with the brush run−in operation.

dry compressed air.

Page 19-42

Revision 15

MD Helicopters, Inc.

CSP−H−2

500 Series - Basic HMI

0−200A

AMMETER

STARTER−GENERATOR

TERMINAL

TERMINAL BLOCK

BOARD

C+

B+

3−OHM

50 MV, 200A

FUSE

SHUNT

RHEOSTAT

A+

25−OHM, 100W

22−OHM

E−

NOTE

24 VDC POWER SUPPLY

−

SWITCH

VARIABLE V

POWER

DC GENERATOR

RELAY

100%

ITEM

EQUIPMENT DESCRIPTION

NO.

VARIABLE VOLTAGE DC GENERATOR, 15AMPERE CAPACITY.

100%

90%

0−5A DC, AMMETER (M1) (WESTON MODEL 931 OR EQUIVALENT).

SATISFACTORILY SEATED BRUSHES

50 MV, 200−AMPERE SHUNT (WESTON OR EQUIVALENT).

0−200A DC AMMETER (M2), 50−MV FULL SCALE (GENERAL ELECTRIC

TYPE DB13 OR EQUIVALENT).

POWER RELAY, 28 VDC, 200−AMPERE CONTACTS, SINGLE−POLE,

UNSATISFACTORILY SEATED BRUSHES

SINGLE−THROW (AN3371−2 OR EQUIVALENT).

NONSEATED AREAS

SWITCH (S1), SPST, 10 AMPERES AT 28 VDC.

SEATED AREAS

RHEOSTAT, 25−OHM, 1000−WATT (OHMITE MODEL U OR EQUIVALENT).

POWER SUPPLY, 10−36 VDC (N.J.E. MODEL 36−20 OR EQUIVALENT).

MULTIMETER (SIMPSON MODEL 260 OR EQUIVALENT).

NOTE: HELICOPTER AMMETER INDICATOR

CIRCUIT TERMINAL.

30−113A

Figure 19-17. Test Hookup for Starter/Generator and Brush Run-in

Page 19-43

Revision 15

MD Helicopters, Inc.

CSP−H−2

500 Series - Basic HMI

(h). Reconnect electrical power and

(b). Insert shaft end of starter/generator

repeat step (f). If additional brush

into opening in mounting flange and

run−in is required, continue opera−

hold starter/generator tightly against

tion at 1 ampere indication on meter

flange.

M1; if not, proceed to step (i).

(c). Install starter/generator V−clamp.

(i). Adjust the 25−ohm potentiometer

Torque clamp nut to 50 inch−

until meter M1 indicates 4 amperes.

pounds (5.65 Nm).

Meter M2 should indicate 25−35

(d). Tap around clamp with a rawhide

amperes.

mallet to seat clamp on flange.

Retorque clamp nut to 50 inch−

(j). Turn all power OFF and disconnect

pounds (5.65 Nm).

starter/generator. Remove from vee

blocks and reinstall brush cover.

(e). Continue tapping around clamp and

retorquing clamp nut until nut no

D. Starter/Generator Installation

longer turns when specified torque is

applied.

(1). Ensure that all electrical power is OFF.

(7). Install electrical leads, washers and

(2). Remove protective cover from opening

nuts. Tighten nuts and remove identify−

in engine.

ing tags.

(3). Install mounting flange with four nuts

20. Night Lighting System - Instrument Panel

and washers. Torque nuts to 100 − 140

Type B

inch−pounds (11.30 − 15.82 Nm).

On helicopters with instrument panel type B,

(4). Using a bottle brush and solvent (1,

the night lighting system is standard equip−

Table 2−4), clean the starter shaft and

ment as part of the electrical system. The

mating engine splines.

night lighting system is as described in

CSP−H−3, except as follows. Upper and lower

Before installation, check condi−

CAUTION

anti−collision lights are strobe type and

tion of seal in accessory drive

instrument panel lights for instruments and

gearbox. For wet− splined starter/genera−

indicators are bolt type lights built into the

tors, also ensure integrity of packing on

hood. Wiring provision are incorporated for

starter/generator drive shaft.

installation of optional incandescent anti−colli−

sion lights in place of strobe lights, if desired.

(5). Lubricate splines on drive shaft of

Interconnection wiring for the night lighting

starter/generator with grease (21).

system, except for instrument panel lights, is

shown in the applicable electrical wiring

(6). Install starter/generator.

diagram in Section 20. Wiring and other

Always support the weight of

information for the panel lights for instrument

CAUTION

the starter/generator during re−

and indicators on the hood is contained in

moval/installation. Damage can occur if

CSP−H−3. Dimming circuit information for

weight is supported by the shear shaft.

panel and instrument lights is provided in

Section 17. Otherwise, refer to CSP−H−3 for

(a). Align starter/generator with terminal

all other information on the night lighting

block down.

system.

Page 19-44

Revision 15

MD Helicopters, Inc.

CSP-H-2

500 Series - Basic HMI

TABLE OF CONTENTS

Para/Figure/Table

Title

Page

Section 20 Wiring and Schematic Diagrams .

20−1

Wiring and Schematic Diagram

20−1

A. Wire Identification

20−1

B. Symbols

20−1

Figure 20−1. Electrical Symbols

20−2

C. Diagrams

20−3

D. Reference Designator List

20−3

Table 20−1. Reference Designator List

20−3

Figure 20−2. Fuselage Wiring Diagram (369HS; 0001 − 0100) (369HM; 001 − 100)

(Sheet 1 of 6)

20−16

Figure 20−3. Console Wiring Diagram, Instrument Panel Type A (369HS; 0001 − 0100)

(369HM; 001 − 100) (Sheet 1 of 4)

20−22

Figure 20−4. Fuselage Wiring Diagram (369HS; 0101 − 0200) (369HM; 101 − 200)

(Sheet 1 of 7)

20−26

Figure 20−5. Console Wiring Diagram, Instrument Panel Type A (369HS; 0101 − 0200)

(369HM; 101 − 200) (Sheet 1 of 4)

20−33

Figure 20−6. Fuselage Wiring Diagram (369HS; 0201 − 0410) (369HE; 101 − 215)

(369HM; 201 − 247) (Sheet 1 of 7)

20−37

Figure 20−7. Console Wiring Diagram, Instrument Panel Type A (369HS; 0201 − 0410)

(369HE; 101 − 215) (369HM; 201 − 247) (Sheet 1 of 4) .

20−44

Figure 20−8. Fuselage Wiring Diagram (369HS; 0411 − 0625) (Sheet 1 of 7) .

20−48

Figure 20−9. Console Wiring Diagram, Instrument Panel Type B (369HS; 0411 − 0625)

(Sheet 1 of 6)

20−55

Figure 20−10. Fuselage Wiring Diagram (369HS; 0626 & Subs) (Sheet 1 of 6) .

20−61

Figure 20−11. Console Wiring Diagram, Instrument Panel Type B (369HS; 0626 & Subs)

(Sheet 1 of 6)

20−67

Figure 20−12. Fuselage Wiring Diagram (369HM; 248 & Subs) (Sheet 1 of 6) .

20−73

Figure 20−13. Console Wiring Diagram, Instrument Panel Type T, with Center Console

(369HM; 248 & Subs) (Sheet 1 of 7)

20−79

Figure 20−14. Typical Electrical System Schematic, Instrument Panel Type A

(Sheet 1 of 6)

20−86

Figure 20−15. Typical Electrical System Schematic, Instrument Panel Type B

(Sheet 1 of 5)

20−92

Figure 20−16. Typical Electrical System Schematic, Instrument Panel Type T

(Sheet 1 of 6)

20−97

Page 20-i

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

SECTION 20

WIRING AND SCHEMATIC DIAGRAMS

1. Wiring and Schematic Diagram

(4). The following letter indicates segment

of wire in a wire number where the

Wiring and schematic diagrams for the

wire passes through or branches at a

electrical system of the helicopter are provided

connector or terminal block.

in this section. Wire identification and symbol

information for the diagrams are also included.

(5). The number (or numbers) following the

segment designation is the standard

A. Wire Identification

AWG wire size.

Wiring in the helicopter is identified by code of

(6). If the wire is a ground portion of a

numbers and letters at intervals throughout

circuit, the suffix N is added to indicate

the wire length. The wiring indemnification

a ground return.

code is as follows:

(7). Where a wire code is duplicated, the

(1).

The initial number (is used) designates

unit number 1 or 2 is prefixed to

unit number.

differentiate between the two circuits.

(2).

The initial letter (or letters) designates

the circuit.

B. Symbols

(3).

The next number (or numbers) is the

The graphic electrical symbols in the schemat−

wire number that separates one section

ic, and in the wiring diagrams where symbols

or leg of the circuit from all others.

are used for clarity, are shown in Figure 20−1.

EXAMPLE: WIRE NUMBER 2P511A20N

511

Unit Number (if used)

Ground

Circuit Designation

Wire Size

Wire Number

Wire Segment

Circuit Designation

Circuit Function

Armament Control

Flight Control

Ammeter and Miscellaneous

Engine Instruments

Flight Instruments

Heating and Associated

Engine Reignition

Starting

Lighting

Utility

Dc Power Distribution

Fuel and Oil

R V

*Vhf Radio and Intercom

Ac Power Distribution

NOTE: Function indicated with an asterisk ( * ) pertains to avionics equipment. Other miscellaneous circuit

designators are used for specific circuits of special equipment configurations and optional avionics and

navigation equipment.

Page 20-1

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

CONTACT, ELECTRICAL:

RESISTOR:

ADJUSTABILITY

FIXED

GENERAL

WITH

ADJUSTABLE OR

ADJUSTABLE

AMPLIFIER

CONTACT

SLIDING

SWITCH:

ANTENNA

FUSE

GENERAL

( + COLOR

BATTERY,

INDICATED

MULTICELL

LAMP

BY LETTER)

PUSHBUTTON

MACHINE,

( ABBREVIATED

CAPACITOR

ROTATING

NAME)

NONLOCKING

CIRCUIT

( ABBREVIATED

BREAKER

METER

SAFETY

NAME)

INTERLOCK

CLOSING

CIRCUIT

PATH TRANSMISSION;

RETURN

WIRING; CABLES;

(GROUND)

WIRES CROSSING

AND NOT CONNECTED

PRESSURE

COIL, RELAY

JUNCTION OR

CONNECTION

TEMPERATURE

CONNECTION,

MECHANICAL

SPLICE

(SIZE USED

CONNECTOR;

TERMINAL, CIRCUIT

AS REQUIRED)

DISCONNECTING DEVICE

JACK OR

RECEPTACLE

SHIELDED CABLE

THERMISTOR

PLUG

POLARITY

THERMOCOUPLE

POSITIVE +

NEGATIVE −

FEMALE CONTACT

ANODE

RECTIFIER

TRANSISTOR

DIODE

MALE CONTACT

CATHODE

PNP

NPN

ZENER

JACK

(AVALANCHE)

COAXIAL

DIODE

UNIJUNCTION

CONNECTOR

TRANSISTOR

PLUG

BREAKDOWN

DIODE

SILICON

CONTROLLED

COAXIAL

RECTIFIER

CONNECTORS

(SCR)

WITH OUTSIDE

RELAY

CONDUCTOR

WINDING, MACHINE

OR TRANSFORMER

NOTE: ASTERISK ( * ) INDICATES SYMBOL RECOMMENDED BY INTERNATIONAL ELECTROTECHNICAL COMMISSION.

30-130

Figure 20-1. Electrical Symbols

Page 20-2

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

C. Diagrams

version 500M helicopter with instrument

panel type T.

The electrical system wiring diagrams,

Figure 20−2 thru Figure 20−1, provide wiring

Electrical system diagrams for special versions

information for the basic electrical system.

of the 500M are provided in Section 20 of the

appropriate part of the 500M HMI Supple−

Wiring diagram application versus helicopter

ment.

model serial number is shown in the title of

each diagram and is listed below.

Electrical diagrams for optional equipment are

furnished in the applicable equipment group of

The wiring diagram show complete point−to−

HMI Appendix A.

point wiring interconnections between all basic

electrical system components.

D. Reference Designator List

The electrical system schematic diagrams,

Figure 20−14 thru Figure 20−16, schematically

Table 20−1 contains a list of electrical equip−

show typical electrical system for helicopters

ment items used in the helicopter and shown

with instrument panel types A, B and normal

in the wiring diagrams.

Table 20-1. Reference Designator List

Identification

Reference

End Use

AR500

369H4525

Audio Amplifier

B101

369A7171-9

Long. Trim Motor

B102

368A7170-7

Lat. Trim Motor

B103

368A7002

^N2 Governor Motor

B250

369A8143

Start Pump Motor

B300

369H4533

Deicer Actuator Motor

B600

369H2488

Heater Actuator Motor

BT101

369A4530

Battery

368H4540

Battery

CB101

2TC12-5

Instrument

CB102

2TC12-5

Cyclic Trim

CB103

2TC12-5

^N2 Governor

CB104

2TC12-5

Warning and Panel Light

CB105

2TC12-15

Gyros

CB106

2TC12-5

Engine Out

CB107

MS26574-2

ADF

CB108

2TC12-7-1/2

NAV/COM

CB109

2TC12-15

Cigar Lighter

CB110

2TC12-15

Landing / Hover Light

CB112

2TC12-15

Generator Field

CB115

MS24509-15

Anti-collision Light

CB117

MS24509-7

Utility Power

CB118

MS24509-7

Start Pump

CB119

MS24509-7

Position Light

CB120

MS24509-7

Pitot Heat

Page

20-3

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

Table 20-1. Reference Designator List (Cont.)

Identification

Reference

End Use

CB121

2TC12-5

Emergency Floats

CB122

2TC12-15

Single Sideband

CB124

MS24509-7-1/2

Engine Re-Ignition

CB126

MS26574-1

Transponder

CB127

MS25244-35

Searchlight

CB128

2TC12-5

Searchlight

CB600

MS25244-50

Hoist

CB601

2TC12-7-1/2

Hoist

CB603

2TC12-15

Cargo Hook

DS10

369A4540/369A4540-3/369A4514-3

Engine Power Out Warning Unit

DS11

2245-1 (Autronics) /369H6425

Dimmer Control

DS100

MS25241-4581

Landing Light Lamp

DS105

SC628 (Mallory)

Engine Power Out warning Horn

DS200

30-0777-5

Strobe Light-Lower

DS201

30-0777-7

Strobe Light-Upper

DS201

1309 GE

Map Light-Pilot’s

DS202

1495 GE

Map Light

DS250

369A4589-3 / A7512-4

Left Position Light Lamp

DS251

369A4589-5 / A7512-24

Right Position Light Lamp

DS400

1683 (G.E.) 369A4588

Rear Position Light

DS401

4580 (G.E.)

Searchlight Left

DS402

4580 (G.E.)

Searchlight Right

Under Floor, Center Web

Ground Stud

Console, Left Side

Ground Stud

Console, Left Side

Ground Stud

Under Floor, Right Side

Ground Stud

Under Seat, Left Side

Ground Stud

Under Seat, Left Side

Ground Stud

Under Seat, Right Side

Ground Stud

Under Floor, Right Side

Ground Stud

Canted Bulkhead, Left Side

Ground Stud

E10

Engine Compartment

E12

Engine Compartment, Right Side

E13

Engine Compartment, Left Side

E14

Canted Bulkhead, Right Side

Aft Cigar Lighter

E15

Canted Bulkhead, Right Side

E19

Pilot’s Map Light, Right Side

Page 20-4

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

Table 20-1. Reference Designator List (Cont.)

Identification

Reference

End Use

E20

Under Seat, Left Side

E24

Under Pilot’s Floor

Heated pitot Tube

E502

Ant. Disconnect, Upper Air Intake Fairing

E503

Ant. Transponder

G200

369A4517

Rotor Tach Generator

G300

369A4550

Starter / Generator

G301

369A4517

^N1 Tach Generator

G302

369A4517

^N2 Tach Generator

HR1

C7SZ15052A (Ford Motor Co.)

Cigar Lighter, Front

HR2

369H6409

Heater-pitot Tube

HR3

C7SZ15052A (Ford Motor Co.)

Cigar Lighter, Rear

MPS-LRH-19C

Audio Amplifier Connector

M9PLSH19C (Winchester)

Instr. Cluster Connector

MS3120F22-41S

Console Connector

J10

MS3120F14-19S

Console Connector

J11

MS3120F-18-1 1S

Console Connector

J12

SEE DS11

Dimmer Control

J13

32445 (AMP)

Compass LT. Splice

J14

32445 (AMP)

Compass LT. Splice

J15

32445 (AMP)

Right Upper Panel LT.

J16

32445 (AMP)

Left Upper Panel LT.

J20

32447 (AMP)

Aft Cigar Ltr.

J21

32447 (AMP)

Aft Cigar Ltr. Splice

J22

32447 (AMP)

Aft Cigar Ltr. Splice

J23

32445 (AMP)

Start Pump Light

J24

32445 (AMP)

Start Pump Light

J31

32445 (AMP)

Lower Panel Lt.

J100

AN2552A3A

Ext. Power Receptacle

J103

JR2/4CP27-CC (Viking)

Utility Power Connector

J109

XAC20SF0016 (Winchester)

Right Cyclic Stick Connector

J112

XAC9SF0016 (Winchester)

Right Collective Stick Connector

J113

XAC9SF0016 (Winchester)

Left Collective Stick Connector

J114

32445 (AMP)

Left Pos. Light Splice

J116

32445 (AMP)

Right Pos. Light Splice

J130

XAC20SF0016 (Winchester)

Left Cyclic Stick Connector

J133

32445 (AMP)

Right Pos. Light Splice

J134

32445 (AMP)

Left Pos. Light Splice

Page

20-5

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

Table 20-1. Reference Designator List (Cont.)

Identification

Reference

End Use

J136

32445 (AMP)

Landing Light Relay Splice

J138

32445 (AMP)

Emergency Float Splice

J139

32445 (AMP)

Emergency Float Splice

J140

32445 (AMP)

Emergency Float Splice

J141

32445 (AMP)

Emergency Float Splice

J200

SG3102E28-66S (Bendix)

Armament Connector

J250

MS3116E8-3S

Start Pump Connector

J251

369A4599-3

Fuel Qty. Level Connector

J302

CA3100E10SL-3SF80

Auto-Reign. Kit Connector

J303

CA3100E22-19PF80

Engine Equipment Connector

J400

32445 (AMP)

Rear Position Light Splice

J401

32445 (AMP)

Rear Position Light Splice

J402

32445 (AMP)

T/R Chip Detector Splice

J605

MS3124E12-3S

Cargo Hook Connector

369A4658

Landing Light Relay

K103

BE26-S28 (Babcock)

Overvoltage Relay

K300

A700-XA (Hartman)

Reverse Current Relay

K301

AN3371-2

Start Relay

K302

MS24166D

Searchlight Relay

K303

MS24166D

Searchlight Relay

369H4518

Engine (N

2) and Rotor Tach. Indicator

369A4516

^N1 Tach Indicator

369A4521

Turbine Outlet Temp. Indicator

369H4234-21

Instrument Cluster, 4-Pack

369H6417

Instrument Cluster, 3-Pack

M5600-2 (Hobbs)

Hour Meter

M21

369H4526

Torque Indicator

M27

369H4505

Altimeter

M28

369H90041

Attitude Gyro

M29

(Supplied with Engine

Start Counter

M502

369H90042

Directional Gyro

MP102

369H90042

Directional Gyro

MP501

369H90041

Attitude Gyro

369A4593

Dual Tach Indicator Plug

369A4593

^N1 Tach Plug

369A4595

Audio Amplifier Plug

M9S952RH19C

Instrument Cluster Connector

Page 20-6

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

Table 20-1. Reference Designator List (Cont.)

Identification

Reference

End Use

MS3196R16S-6S (C)

Voltage Regulator Connector

369A4595

Audio Amplifier Plug

MRAC26SJT6

Dimmer Control Connector

KPTM06F22A-41P

Console Connector

P10

MS3126-F14-19P

Console Connector

P11

MS3126-F18-1 1P

Console Connector

P12

MS3126-F18-32S

Dimmer Control Connector

P13

32445 (AMP)

Compass Light Splice

P14

32445 (AMP)

Compass Light Splice

P19

KPT06F14-18S

Engine Power Out Warning (2200-3)

P130

MRAC20PJTC6H9

Left Cyclic Stick Connector

P20

32445 (AMP)

Splices

P21

32445 (AMP)

Splices

P22

32445 (AMP)

Splices

P23

32445 (AMP)

Splices

P24

32445 (AMP)

Splices

P105

MS3106R10SL-3S (C)

Longitudinal Trim Motor Connector

P106

MS3106R10SL-3S (C)

Lateral Trim Motor Connector

P107

MS3108R10SL-3S (C)

^N2 Governor Connector

P108

SC06P24-9P (Bendix)

Battery Plug

P109

369A4599

Rotor Tachometer Generator

P112

XAC9PC0306X

Right Collective Stick Connector

P113

XAC9PC0306X

Left Collective Stick Connector

P200

CS3106A28-66P

Hoist

P202

369A4599

Rotor Tach Generator Connector

P250

MS3116E8-3S

Start Pump Connector

P251

369A4593

Fuel Transmitter Connector

P300

369H8144

Upper Engine Chip Detector Connect

P301

369H8144

Lower Engine Chip Detector Connect

P302

CA3106E10SL-3PF80

Auto Re-Ignition Kit Connector

P303

CA3106E22-19SF80

Engine Harness Disconnect Connector

P305

369A4599

^N1 Tach Generator Connector

P306

369A4599

^N2 Tach Generator Connector

P400

32445 (AMP)

Tail Light Splice

P402

32445 (AMP)

Tail Rotor Chip Detector Splice

P605

MS3216F12-3P

Cargo Hook Connector

P609

KPT06F8-4S

Heater Actuator Connector

Page 20-7

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

Table 20-1. Reference Designator List (Cont.)

Identification

Reference

End Use

P612

KPT06F8-4S

Deicer Actuator Connector

0200-C (Ohmite) 25Ω25 Watt

Instrument Cluster Resistor

120Ω1 Watt

Over Voltage Relay Resistor

3730 (Ohmite) 1Ω12 Watt

Instrument Cluster Resistor

1006 (Ohmite)

TOT Calibration Resistor (TB9)

50Ω5 Watt W / Wound

Map Light Dimming Resistor

R10

3-1/2 TE57FSI (Ohmite)

Cigar Lighter Resistors

R11

1Ω55 Watt W / Wound

R12

R110

5KΩ2 Watt POT

Instrument Panel Dimming Resistor

R112

1-D-40A-F-20

(Ohmite)

Instrument Cluster Resistor

R251

369H4245-501

Fuel Qty. Level Resistor (Tank Unit)

R302

369A4534

Engine Oil Pressure Resistor (Sender)

R303

RV4LASA-101A (Allen-Bradley)

Eng. Oil Press Ind. Adj. Trim POT

R304

1511 (Ohmite) 30Ω 8 Watt

Eng. Oil Press Ind. Adj. Resistor

R305

1513 (Ohmite) 40Ω 8 Watt

Eng. Oil Press Ind. Adj. Resistor

R501

(Bendix Radio)

Intercom Side Tune POT

RT301

369A4533

Engine Oil Temperature Sender

369A4548

Warn. Light Press-to-Test Switch

MS25106-21

Battery / External Switch

9577

Key Switch

MS35059-22

Generator Switch

S10

369H92040

Auto Re-Ignition Pressure Switch

S11

MS35059-22

Auto Re-Ignition Arm Switch

S13

MS90311-231

Com 1 / Com 2 Switch

S104

369A4580

^N2 Governor Switch

S105

369A4581

Landing Light Switch

S106

369A4582

Start Switch

S107

369A7313

Cyclic Trim

S107

RS36

Rear Map Light Switch

S199

MS27994-1

^NR Disable Switch

S200

B-3707 (Tedeco)

Main Gearbox Chip Det. Switch (Fwd)

S201

B-3148A (Tedeco)

Main Gearbox Chip Det. Switch (Aft)

S202

369A5186 (Tedeco)

Main Gearbox Oil Temp. Switch

S203

M-4013-15

(Hobbs)

Main Gearbox Oil Pressure Switch

Page 20-8

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

Table 20-1. Reference Designator List (Cont.)

Identification

Reference

End Use

S300

Furnished with engine

Engine Upper Chip Detector Switch

S301

Furnished with engine

Engine Lower Chip Detector Switch

S303

Furnished with engine

Fuel Filter Switch

S400

369A5160

T/R Gearbox Chip Detector Switch

S601

SS-39 (Stackpole)

Heater Switch

S602

SS-33 (Stackpole)

Deicer Switch

SP1

32445 (AMP)

Float System 369H92557

SP2

32445 (AMP)

Float System 369H92557

SP3

32445 (AMP)

Float System 369H92557

SP4

32445 (AMP)

Float System 369H92557

SP5

32445 (AMP)

Float System 369H92557

SP6

32445 (AMP)

Float System 369H92557

SP7

32445 (AMP)

Float System 369H92557

SP8

32445 (AMP)

Float System 369H92557

SP9

32445 (AMP)

Float System 369H92557

SP10

32445 (AMP)

Float System 369H92557

SP11

32445 (AMP)

Float System 369H92557

SP12

MS25181-2

Float System 369H92557

SP13

MS25181-2

Float System 369H92557

SP14

MS25181-2

Float System 369H92557

SP15

MS25181-2

Float System 369H92557

SP16

32445 (AMP)

Engine Re-Ignition 369H90118

SP17

32445 (AMP)

Engine Re-Ignition 369H90118

SP18

32445 (AMP)

Engine Re-Ignition 369H90118

SP20

32445 (AMP)

Float System 369H92557

SP21

32445 (AMP)

Float System 369H92557

SP22

32445 (AMP)

Float System 369H92557

SP23

32445 (AMP)

Float System 369H92557

SP24

32445 (AMP)

Float System 369H92557

SP25

32445 (AMP)

Float System 369H92557

SP26

32445 (AMP)

Float System 369H92557

SP27

MS25181-2

Chip Detector, Gearbox, 369H4121

SP28

MS25181-2

Caution Warning Unit

SP29

MS25181-2

Gyro

SP30

MS25181-2

Map Light

SP31

MS25181-2

Engine Out

SP32

MS25181-2

Warning Horn-Engine Out

Page

20-9

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

Table 20-1. Reference Designator List (Cont.)

Identification

Reference

End Use

SP33

MS25181-2

Position Lights

SP38

32445 (AMP)

Anti-Collision Light Flashers

SP39

32445 (AMP)

Map Light Light Rear

SP40

32445 (AMP)

Map Light Light Rear

SP42

MS25181-2

Hoist

SP43

MS25181-2

Hoist

SP44

D121

Hoist

SP45

D121

Hoist

SP46

32447 (AMP)

Float System 369H92557

SP48

32445 (AMP)

Float System 369H92557

SP49

32445 (AMP)

Float System 369H92557

SP50

MS25181-1

Night Light Kit, 369H6420

SP51

32445 (AMP)

Night Light Kit, 369H90062

SP52

32445 (AMP)

Night Light Kit, 369H90062

SP53

32445 (AMP)

Night Light Kit, 369H90062

SP54

32445 (AMP)

Night Light Kit, 369H90062

SP55

32445 (AMP)

Night Light Kit, 369H90062

SP56

32445 (AMP)

Night Light Kit, 369H90062

SP57

32445 (AMP)

Night Light Kit, 369H90062

SP58

32445 (AMP)

Night Light Kit, 369H90062

SP59

32445 (AMP)

Night Light Kit, 369H90062

SP60

32445 (AMP)

Night Light Kit, 369H90062

SP61

32445 (AMP)

Night Light Kit, 369H90062

SP62

32445 (AMP)

Night Light Kit, 369H90062

SP63

32445 (AMP)

Night Light Kit, 369H90062

SP64

32445 (AMP)

Night Light Kit, 369H90062

SP65

32445 (AMP)

Night Light Kit, 369H90062

SP66

32445 (AMP)

Searchlight Kit, 369H90142

SP67

32445 (AMP)

Searchlight Kit, 369H90142

SP69

32445 (AMP)

Engine Out Warning, M50033

SP70

32445 (AMP)

Engine Out Warning, M50033

SP71

32445 (AMP)

Engine Out Warning, M50033

SP72

32445 (AMP)

Engine Out Warning, M50033

SP73

MS25181-2

Harness, 369H4126

SP74

MS25181

Console, 369H6416

SP75

MS25181

Console, 369H6416

SP76

MS25181

Console, 369H6416

Page 20-10

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

Table 20-1. Reference Designator List (Cont.)

Identification

Reference

End Use

SP77

MS25181

Console, 369H6416

SP78

RBB22

Engine Out Warning, M50033

SP79

32445

Engine Start Counter C-20

SP80

32445

Engine Start Counter C-20

SP81

32445 (AMP)

Audio Warning (DS 105)

SP82

32445 (AMP)

Audio Warning (DS 105)

SP83

32445 (AMP)

Battery Temperature Warning

SP84

32445 (AMP)

Battery Temperature Warning

SP85

32445 (AMP)

Battery Temperature Warning

SP86

32445 (AMP)

Battery Temperature Warning

SP91

32445 (AMP)

Cigar Lighter Splice

SP114

32445 (AMP)

Left Skid Light Splice

SP115

32445 (AMP)

Left Skid Light Splice

SP116

32445 (AMP)

Right Skid Light Splice

SP117

32445 (AMP)

Right Skid Light Splice

SP119

32445 (AMP)

Strobe Light Splice

SP131

32445 (AMP)

Right Skid Light Splice

SP132

32445 (AMP)

Left Skid Light Splice

SP133

32445 (AMP)

Right Skid Light Splice

SP134

32445 (AMP)

Left Skid Light Splice

SP136

32445 (AMP)

Landing Light Splice

SP140

32445 (AMP)

Pitot Heater Splice

SP205

32445 (AMP)

Utility Light Splice

SP400

32445 (AMP)

Tail Light Splice

SP401

32445 (AMP)

Tail Light Splice

SP402

32445 (AMP)

Tail Rotor Chips Light Splice

SP1151

32445 (AMP)

Left Skid Light Splice

SP1171

32445 (AMP)

Right Skid Light Splice

SP1311

32445 (AMP)

Right Skid Light Splice

SP1321

32445 (AMP)

Left Skid Light Splice

TB1-1

A22DNN20-1

Module

TB1-2

A22DNN20-1

Module

TB1-3

A22DNN20-1

Module

TB1-4

A22DNN20-1

Module

TB1-5

A22DNN20-1

Module

TB1-6

A22DNN20-1

Module

TB1-7

A22DNN20-1

Module

Page 20-11

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

Table 20-1. Reference Designator List (Cont.)

Identification

Reference

End Use

TB1-8

A22DNN20-1

Module

TB1-9

A22DNN20-1

Module

TB1-10

A22DNN20-1

Module

TB1-1 1

A22DNN20-1

Module

TB1-12

A4DNN20-1

Module

TB1-13

A4DNN20-1

Module

TB1-14

A4DNN20-1

Module

TB1-15

A22DNN20-1

Module

TB1-16

A22DNN20-1

Module

TB1-17

A4DNN20-1

Module

TB1-18

A4DNN20-1

Module

TB1-19

A4DNN20-1

Module

TB1-20

A4DNN20-1

Module

TB1-21

A4DNN20-1

Module

TB1-22

A4DNN20-1

Module

TB1-23

A4DNN20-1

Module

TB1-24

A4DNN20-1

Module

TB1-25

A4DNN20-1

Module

TB1-26

A4DNN20-1

Module

TB1-27

A4DNN20-1

Module

TB1-28

A4DNN20-1

Module

TB1-29

A22DNN20-1

Module

TB1-30

A22DNN20-1

Module

TB1-31

A4DNN20-1

Module

TB1-32

A4DNN20-1

Module

TB1-33

A4DNN20-1

Module

TB1-34

A4DNN20-1

Module

TB3-1

A22DNN20-1

Module

TB3-2

A4DNN20-1

Module

TB3-3

A4DNN20-1

Module

TB3-4

A4DNN20-1

Module

TB3-5

A4DNN20-1

Module

TB3-6

A4DNN20-1

Module

TB5-1

A22DNN20-1

Module

TB5-2

A22DNN20-1

Module

TB5-3

A4DNN20-1

Module

TB5-4

A4DNN20-1

Module

Page 20-12

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

Table 20-1. Reference Designator List (Cont.)

Identification

Reference

End Use

TB5-6

A4DNN20-1

Module

TB6

MS27212-1-6

Ground Buss

TB7-1

A6SNN20T-1

Module

TB7-2

A6SNN20T-1

Module

TB7-3

A6SNN20T-1

Module

TB7-4

A6SNN20T-1

Module

TB7-5

A6SNN20T-1

Module

TB7-6

A32DNN20T-1

Module

TB7-7

A32DNN20T-1

Module

TB7-8

A32DNN20T-1

Module

TB7-9

A32DNN20T-1

Module

TB7-10

A32DNN20T-1

Module

TB7-1 1

A32DNN20T-1

Module

TB8

Board

Resistor Board

TB10

MS27212-2-4

Junction

TB11-1

A6SNN20T-1

Module

TB11-2

A6SNN20T-1

Module

TB11-3

A6SNN20T-1

Module

TB12-1

A22DNN20-1

Module

TB12-2

A4DNN20-1

Module

TB12-3

A22DNN20-1

Module

TB12-4

A22DNN20-1

Module

TB101

MS27212-2-2-7

Main 28V Buss

TB104

MS25036-101

Junction

TB105

MS25036-101

Junction

TB106

Ref. 369H6416

Audio Isolator

TB501

MS27212-1-4

28V Buss

TB502-1

A32DNN20T-1

Module

TB502-2

A32DNN20T-1

Module

TB502-3

A6SNN20T-1

Module

TB502-4

A6SNN20T-1

Module

TB502-5

A23DNN20T-1

Module

TB502-6

A32DNN20T-1

Module

TB502-7

A6SNN20T-1

Module

TB502-8

A6SNN20T-1

Module

TB502-9

A6SNN20T-1

Module

TB502-10

A32DNN20T-1

Module

Page

20-13

Revision 20

MD Helicopters, Inc.

CSP−H−2

500 Series − Basic HMI

Table 20-1. Reference Designator List (Cont.)

Identification

Reference

End Use

TB502-1 1

A32DNN20T-1

Module

TB502-12

A32DNN20T-1

Module

TB502-13

A23DNN20T-1

Module

TB502-14

A23DNN20T-1

Module

TB502-15

A32DNN20T-1

Module

TB502-16

A32DNN20T-1

Module

TB502-17

A32DNN20T-1

Module

TB502-18

A32DNN20T-1

Module

TB502-19

A23DNN20T-1

Module

TB502-20

A23DNN20T-1

Module

TB700-1

A6SNN20T-1

Module

TB700-2

A6SNN20T-1

Module

TB700-3

A6SNN20T-1

Module

TB700-4

A6SNN20T-1

Module

TB700-5

A6SNN20T-1

Module

TB700-6

A6SNN20T-1

Module

TB700-7

A6SNN20T-1

Module

TB700-8

A6SNN20T-1

Module

TC300

Supplied with Engine

Thermocouple

VR1

369H4550

Voltage regulator

369H4232

Buss on S-2

369H6460

Ground Buss (TB6)

(Ref.)

Main Power Buss

XDS1

369A4572-7

Engine Out Warning Light

XDS2

369A4572-27

Eng. Oil Press. & Temp. Light

XDS3

369A4572-13

Chip Detector Light

XDS4

369A4572-15

Fuel Low Light

XDS5

369A4572-25

Fuel Filter Light

XDS6

369A4572-23

Generator Out Light

XDS7

369H4236

Start Pump On Light

XDS12

10410HS7-15

Trans. Oil Temperature Light

XDS13

10410HS7-14

Trans. Oil Pressure Light

XDS14

10410HS7-13

Engine Out Light

XDS15

10410HS7-16

Engine Chips Light

XDS16

10410HS7-19

Fuel Low Light

XDS17

10410HS7-21

Fuel Filter Light

XDS18

10410HS7-20

Generator Out

Page 20-14

Revision 20

CSP-H-2 BASIC HANDBOOK OF MAINTENANCE INSTRUCTIONS FOR MDHI 369H HELICOPTERS - page 12