Mercedes-Benz ML320. Service manual - part 777

 

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Mercedes-Benz ML320. Service manual - part 777

 

 

BT27.50-P-0010-01A

Piston B2 changed

Transmission 722.6 phased in

k

TRANSMISSION 722.6## ## as of 0552036 as of 1.8.97

P27.60-2009-02

14d Sealing ring
27

Pistons

To improve the piston guide and avoid the piston jamming the position of the sealing 
ring (14d) on the piston (27) was changed.

Copyright DaimlerChrysler AG  28.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorded by Modification services.

Page 1

AR03.10-P-7311-01V

Measure end clearance of piston rings

Modification notes

12.6.02

Value in line 1001 for Engine 113.967 modified from 
0.012...0.060 to 0.033...0.07 and from 0010...0.030 to 
0.01...0.04

Value in BE03.10-P-1001-05B for Engine 
113.967 modified

*BE03.10-P-1001-05B

Test values for piston rings

Number

Designation

Engine 112.910/ 
911/912

Engine 112.920/
921/922/923/940/
941/942/943/944/
945/946/947/948/
960, 
113.940/941/942/
943

Engine 113.944/ 
980/981/982/984

BE03.10-P-1001-05B

Vertical clearance of 
piston ring

Groove 1

mm

0,012...0,060

0,012...0,060

0,012...0,060

Groove 2

mm

0,010...0,030

0,010...0,030

0,010...0,030

Test values for piston rings

Number

Designation

Engine 113.960/ 
961/962/963/965/
968

Engine 
113.967

BE03.10-P-1001-05B

Vertical clearance of 
piston ring

Groove 1

mm

0,012...0,060

0,033...0,070

Groove 2

mm

0,010...0,030

0,01...0,04

Commercially available tools (see Workshop Equipment Manual)

Number

Designation

Make (e.g.)

Order number

WH58.30-Z-1008-12A

Feeler gage

Stiefelmayer
D-73734 Esslingen 

59

P03.10-2034-01

1

Use the 

 feeler gage to measure end clearance of compression rings between 

compression ring and mounting groove in the piston; replace compression rings or piston, if 
necessary.

 The end clearance of the oil scraper ring cannot be checked because of its three-part 

design. If the compression rings are replaced, the oil scraper ring must also be replaced.

Copyright DaimlerChrysler AG  20.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorded by Modification services.

Page 1

AR03.10-P-7311-02V

Measure gap clearance of piston rings

Test values for piston rings

Number

Designation

Engine 112.910/ 
911/912

Engine 112.920/
921/922/923/940/
941/942/943/944/
945/946/947/948/
960, 
113.940/941/942/
943

Engine 113.944/ 
980/981/982/984

BE03.10-P-1002-05B

Piston ring gap clearance Groove 1

mm

0,200...0,350

0,200...0,350

0,200...0,350

Groove 2

mm

0,200...0,400

0,200...0,400

0,200...0,400

Test values for piston rings

Number

Designation

Engine 113.960/ 
961/ 962/ 963/ 
965/ 968/

Engine 
113.967

BE03.10-P-1002-05B

Piston ring gap clearance Groove 1

mm

0,200...0,350

0,200...0,350

groove 2

mm

0,200...0,400

0,200...0,400

Commercially available tools (see Workshop Equipment Manual)

Number

Designation

Make (e.g.)

Order number

WH58.30-Z-1008-12A

Feeler gage

Stiefelmayer
D-73734 Esslingen 

59

P03.10-2035-01

1

Clean cylinder contact surface.

2

Insert the two compression rings one after the other into the unworn area of the cylinder 

wall and measure end clearance with 

 feeler gauge; replace piston rings, if necessary.

 The gap clearance of the oil scraper ring cannot be checked because of its three-part 

design. If the compression rings are replaced, the oil scraper ring must also be replaced.

Copyright DaimlerChrysler AG  20.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorded by Modification services.

Page 1

AR03.10-P-7311BV

Remove/install piston rings

2.7.97

ENGINE 

113 in MODEL 129, 163, 202, 203, 208, 209, 210, 211, 215, 220, 230

ENGINE 

112 /945, 113.962 /982

P03.10-2022-06

1

Compression ring (plain compression 
ring)

2

Compression ring ( taper-faced hook 
scraper ring)

3

Oil scraper ring

4

Piston

5

Piston crown

Fig. item, etc.

Work instructions

4

Remove/install pistons

AR03.10-P-7021AV

1, 2, 3

Piston rings

transmission

 

Pliers

*000589513700

 

Removal:

Oil scraper ring 

with the pliers. 

The oil scraper ring (3) must be removed and 
installed by hand.

 

Installation:

Compression rings

- Measure width of compression rings (1, 2).

*BE03.10-P-1003-05B

- Pay attention to installation position of 

compression rings (1, 2). The inscription 
"Top" or the manufacturer's designation 
must point toward the piston crown (5).

1, 2

Measure the side clearance of the 
compression rings

AR03.10-P-7311-01V

1, 2

Measure end gap of the compression rings

AR03.10-P-7311-02V

Test values for piston rings

Number

Designation

Engine 112.910/ 
911/912

Engine 112.913

Engine 112.920/
921/922/923/940/
941/942/943/944/
945/946/947/948/
960, 
113.940/941/942/
943

BE03.10-P-1003-05B

Dimension

Plain compression ring

mm

83.2 X 1.5 X 3.1

89.9 X 1.5 X 3.1

89.9 X 1.5 X 3.1

Taper-faced hook 
scraper ring

mm

83.2 X 3.5 X 3.5

89.9 X 1.75 X 3.5

89.9 X 3.5 X 3.5

Test values for piston rings

Number

Designation

Engine 112.949

Copyright DaimlerChrysler AG  20.05.2006 CD-Ausgabe G/10/04 . This WIS print-out will not be recorded by Modification services.

Page 1

 

 

 

 

 

 

 

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