DongFeng DFA1063DJ10-301, Service Manual

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Rear Axle
RA-4
Assembly and Adjustment
Disassemble and asseble of the assembly
Rear wheel hub brake drum assembly
1.Fixed the rear axle and remove the half axle bolt by a spanner;
2.Pull out the half axle gently and when the spline passing the oil seal, turn the half axle slowly to avoid damage
the half axle oil seal;
3.Take down three screws of the stop spacer by a screwdriver, then remove the stop spacer and dismantle the
adjusting nut by a spanner;
4.Turn the wheel hub brake drum a little and pull it, gently knock at the brake drum at the same time to loose the
inner ring of the outer bearing, then take down the wheel hub brake drum, but you need to pay attention that the
assembly is so heavy that may be fallen down or hurt someone, and the inner ring of the outer bearing need to
care at the same time, don't fall it.
The assembling sequence of the rear wheel hub brake drum assembly is opposite to the above sequence, and
you must to pay attention to the tightening torque of the thread connecting parts and the adjustment of the bearing
pretightening force.
Assembly of the main reductor assembly
1) Assembly of the drive gear
1.Press the outer ring of the front inner and outer bearing into the bearing seat;
2.Press the oil seal on the oil seal seat;
3.Press the inner ring of the front inner bearing onto the drive gear, and install the spacer sleeve, adjusting spacer,
bearing seat assembly and front outer bearing inner ring in sequence at the spline end of the gear;
4.Measure the pretightening load of the drive gear bearing: install the oil seal assembly, thrust washer, flange fork
and washer, then tighten the castle nut with a torque 350~500N.m and measure the pretightening force at this
time, the starting force of pulling the flange hole of the bearing seat should be 12~30N;
5.If the pretightening force is disqualified, you need to replace the adjusting spacer, reassemble to qualified;
6.Make use of a cotter pin to lock the castle nut.
2) Assembly of the differential
1.Install the bearing to the left and right differential housing;
2.Install planet gear, half axle gear, cross shaft, planet gear supporting washer, and half axle gear supporting
washer;
3.Measure the tooth space of the planet gear of the differential, check the clearance between half axle gear sup-
porting end face and the supporting washer with a clearance gauge, it should be
≤
0.8 mm;
4.Align the marks of left and right differential housing and then assemble.
Tightening torque: 140~160N.m
3) Assembly of the main reductor assembly
1.After assembled the bearing outer ring of the differential, install it onto the main reductor housing;
2.Install the adjusting nut and the bearing cover, then fasten with bolts;
3.Equably tighten the adjusting nut to pretighten the load until the pretightening load is between 16.4~24.3N;
4.Install the adjusting spacer of main cone to the bearing seat and assemble the drive conical gear assembly;
5.Adjust the gear tooth space to 0.20~0.40mm:
The change value of the tooth space
≤
0.15 mm