42
Operation Inspection for Steering
Mechanism
1) Put front wheels on a swivel table.
2) Rotate steering wheel clockwise
and anti -clockwise to its limit posi鄄
tion, to detect if it is fluent.
3) Let engine run in idle speed and
check steering wheel for free play.
The limit value of this free play is 15~
35mm. Rotate the adjusting screw
clockwise to decrease the free play,
while rotate anti -clockwise to in鄄
crease.
4) When engine run in idle speed,
the torque of steering wheel should
be around 19.6N.
5)When staring the engine to turning
steering wheel to two sides for sever鄄
al times .When removing the air from
the engine ,then fill oil into it.
6冤Turing the steering wheel to the
front.
7冤Turn off the engine to checking oil.
If it need oil, then fill it.
Note:To checking is steering oil on a
high temperature .If it has some trou鄄
bles, then doing the 4 and 5 steps
again or mending power steering
pump.
Use and Maintenace
1冤 Check the new truck to driving for
3000要4000km ,then fill oil to steering
and cleaning oil net.
2冤 Always checking the oil measure
or oil quantity in the oil crock, if it has
something wrong that change it .
3冤 Do not disassemble the steering
system for another side .Pay atten鄄
tion to the oil pump pipeline ,it can
not fill with air in it .keep cleaning it.
Step:
a) Turn the steering out oil pump into
the steering in oil pump.
b) The return oil inlet connect with oil鄄
can inlet.
4冤 In some troubles of power steer鄄
ing, the drive can use the hand
steering but could not use for a long鄄
time.
5冤 Don't steer when parking, since it
will shorten useful life of parts.
6冤 According to the regulate to fill
hydraulic pressure oil, the environ鄄
ment temperature is above 0 益 ,
change steering system should
adopt L -HM 464# wear resistance
hydraulic pressure oil; the environ鄄
HFC1048
series trucks
43
ment temperature on 0 益 . (the dif鄄
ferent number oil can't mix an us鄄
age).The import power steering or
steering pump to choose to press oil
with the DEXRONII model number
liquid.(American G.M. standard)
The use and maintenance of
power steering
1)How to use of power steering
a) Don't steer when parking for 5
minutes.
b) Forbid to steer the steering wheel
when can not moved.
c) Forbid to steer the steering wheel
in the same place.
d) Forbid to steer the steering wheel
speed for 90turn/m.
2)How to maintenance of power
steering
The main idea is to prevent ,to check
for scheduled time .Following about
the ministry of communications stan鄄
dard about the car JT 辕 T201要95叶The
arts and crafts maintenance of car曳
and city build ministry standard
CJl7要86 叶The technique condition
mending way of the city bus曳.
a)Daily maintenance: to checking the
truck when driving in order to your
security.
b)One class maintenance(2000-3000
kms)
i. Each lubrication partto fill the
grease, the power steering should be
fill the oil on time.
ii. Insure cross shaft , cross/lax pull
rodten ball end to moved vivid and
not loose.
iii. Check tight each conjunction part.
iv. Check pipe conjunction part, in鄄
sured and don't leak oil .
c)Second class maintenance(10000-
15000 kms)
i. Chang the power steering oil.
ii. Clean and check the steering
wheel.
iii. Clean the power steering oil net.
Iv Check front axle, ball axle, steer鄄
ing knuckle, steering knuckle arm,
steering knuckle frname.
v. Disassemble, length pull rod,
cleaning and checking parts in order
to insure them well.
vi.The other parts, please read the
reference. (JT 辕 T 201要95 )
d)To install steering knuckle plumb鄄
ing arm and locate blots. The daily