DongFeng DFA1063DJ10-301, Руководство по обслуживанию

Страница: 64 / 142

Front Axle
FA-4
Assembly and Adjustment
Disassemble and asseble of the assembly
Front wheel hub brake drum assembly
1.Fixed the front axle and remove the wheel hub end cover;
2.Take off the cotter pin, adjusting nut and spacer;
3.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 front 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.
Adjustment of axle
Ajustment of axial clearance between front axle and steering knuckle
1.Installl the steering knuckle and thrust bearing on teh front axle, select the proper adjusting spacer(Note:only
use one) to adjust the clearance and assure the clearance is ≤ 0.1mm;
2.Apply a layer of grease on the surface of the kingpin, align the lock pin slot of the kingpin to the lock pin hole of
the front axle, then insert the kingpin and tighten the lock pin;
3.Before add the grease, measure both left and right of the starting force at cotter pin of steering knuckle journal,
and the starting force should be ≤ 10N.
Adjustment of front wheel hub pretightening force
1.Apply some 2# lithium grease on the thread of the steering knuckle shaft end and the wearproof spacer;
2.Tighten the locking nut by a torque of 120~150N.m;
3.Turn the wheel hub for 2~3 circles to correct the alignment of the bearing;
4.Tighten the locking nut by a torque of 120~150N.m;
5.Unscrew the locking nut for 1/3 circle, install the locking washer and limit spacer, and make the limit spacer
align to the steering knuckle key slot and the adjusting nut limit pin;
6.Install the outer nut, tighten it with a torque of 120~150N.m;
7.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 is 20~50N.
Adjustment of the toe-in
1.First, loose the locking bolt of the tie rod;
2.Turn the tie rod and make the toe-in is 0~4mm at the external diameter of the tire;
3.Tighten the fixed nut of the tie rod, and make the angle between left and right joint is no t larger than 4 ° , and
the angle of oscillation of the tie rod joint during the largest turning angle must have some over measure.
Adjustment of the steering angle
1.Adjust the limit screw of the turning angle, and make the max.turning anggle of the the inner wheel is 40 ° ;
2.After adjusting the limit screw, tighten the locking nut.