Dongfeng DFA1063DJ10 (14)-301/303. Manual - part 19

Rear Axle

RA-6

Adjustment of the rear wheel bearing pretightening force

1.Remove the stop spacer first;

2.Tighten the adjusting nut by a special spanner with a torque of 150~180N.m;

3.Turn the wheel hub 2~3 circles, and make the bearing aligned correctly;

4.Fasten the adjusting nut with a tightening torque of 150~180N.m;

5.Reverse the adjusting nut for 1/8~1/6circle;

6.Make sure if the pretightening force is correct. First, turn the wheel hub for 2~3 circles, then confirm the tangen-

tial force of the wheel hub bolt;

The tangential force of the wheel hub bolt is 30~ 60 N.

Trouble Analysis

Trouble

Cause

Method

Wheel hub bearing is 
stugnant

Big pretightening force of the wheel hub 
bearing

Adjust pretightening force

Bearing lack of lubricating or improper 
grease

Add or replace the grease

Dust on the bearing

Clean and add some grease

Insufficient brake force

Cam shaft turns inflexibly

Check the cam for its working condition

Improper adjustment of the brake air 
chamber push rod travel

Adjust travel

Friction plate overheated or deterioration

Replace friction plate

Improper connceting condition of the 
friction plate

Correct the joint position of friction plate

Water enterred the brake drum

Press down the brake pedal during 
running to exhaust the water

Grease on the connecting face of the 
friction plate or the brake drum

Cleanup the grease or replace friction 
plate

Abnormal noise while 
braking

Friction plate worn and rivet appeared

Replace friction plate

Friction plate surface hardening or deteri-
oration

Replace friction plate

Brake drum uneven worn or loose 
installed

Correct brake drum or tighten the bolt

Brake shoe and friction plate connected 
loosely

Replace rivet

Brake shoe fixed pin loosed

Tighten fixed pin locking screw

Wheel hub bearing worn

Replace wheel hub bearing

Brake drum distortion

Replace brake drum

Wheel unsmooth

Cam shaft lack of lubricating or adjusting 
arm doesn't return

Add grease or correct troubled parts

Return spring of the brake shoe or air 
chamber broken or fatigue 

Replace troubled parts

Rear Axle

RA-7

Lubricating Parts and Lubricant

Lubricating parts

Lubricant

Abnormal noise while 
driving

Improper gear space of the differential

Replace spacer or gear

Too big clearance between drive gear and 
driven gear 

Replace spacer or gear

Drive gear bearing pretightening force too 
small

Adjust pretightening force

Half axle gear, planet gear, and cross shaft 
worn or damaged

Correct or replace troubled parts

Oil level too low

Add enough lubricant

Lubricant leaks

Oil seal worn, loosed or damaged

Replace oil seal

Fasten bolt loosed or sealant failed

Tighten bolt or smear the sealant again

Bearing seat fasten bolt loosed

Tighten bolt by the required torque

Oil drain screw plug loosed or the gasket 
is damaged

Tighten screw plug or replace gasket

Axle housing distorted because of over-
load

Correct or replace axle housing

Vent is blocked or damaged

Clean or replace vent plug

Brake unstably 

Improper installation of the brake shoe or 
return spring is broken

Tighten fixed pin lock screw or replace 
return spring

Oil on brake friction plate or deterioration Clean or replace friction plate
Brake bottom damaged

Replace brake bottom plate

Item

Maintenance Interval Mileage ( × 1000km)

First maintain

4

8

12 16 20 24 28 32 36 40 44 48

Reductor assy

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Wheel hub bearing

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●

Adjusting arm

●

●

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●

Cam bracket

●

●

●

Part

Lubricant

Type

Reductor assy

gear oil

GL-5 double curve gear oil

Wheel hub bearing

lithium grease

2# 

Adjusting arm

lithium grease

2# 

Cam bracket

lithium grease

2# 

Rear Axle

RA-8

 Tightening Torque of Important Bolts and Nuts

Main Adjusting Data and Maintaining Standard

Main adjusting data

Maintaining Standard

Part

Tighten Torque (N.m)

Oil drain screw plug

130   ~ 150

Big nut of the drive gear

350   ~ 500

Rear brake bottom plate bolt

156   ~ 206

Air chamber bracket fixed bolt

55   ~ 70

Air chamber fixed bolt

50   ~ 75

Bearing seat bolt

50   ~ 70

Driven gear bolt

140   ~ 160

Differential housing bolt

140 ~ 160

Half axle nut

70   ~ 95

Rear adjusting nut

150   ~ 180

Reductor housing and axle housing connecting bolt

140   ~ 170

Axle housing rear cover and axle housing connecting bolt

90  ~ 120

                 Adjusting Item

                            Adjusting Data

Tooth space

0.2~0.4mm

Clearance between rear fiction plate and brake drum

0.4~0.7mm

             Item

Maintaining Standard

       Wear Limit

            Remark

Feedhole of the rear axle leaf 
spring worn

Φ

27mm

Φ

28mm

Radial runout of left and right half 
axle sleeve outer bearing journal

0.03mm

0.1mm

Radial runout of the middle part 
rough surface of half axle

1mm

1.5mm

Repair limit: 1.5mm

Face runout of the wheel hub and 
half axle flange connecting face

0.1mm

0.15mm

Suspension System

                                              FA

Table of Contents

Trouble Analysis............................................................................................. FA-1
Structure.......................................................................................................... FA-2
Disassembly.................................................................................................... FA-4
Check .............................................................................................................. FA-7
Assembly ........................................................................................................ FA-8