Page 493 - Foton Workshop Manual - Auman EST-M

Diagnosis - Mechanical fault diagnosis DI - 439

Failure diagnosis IN

When the vehicle fails, first check visually for normal items. Items to be checked as follows:
● If there is obvious damage on the visible or easy to contact parts. DI
● If there is any additional installation after-sales which may cause system failure.
● If the parts are loose abnormally? EG

● Check the rear axle for bending.
When the vehicle fails, the corresponding phenomenon will appear. Common failures and trouble-shooting as TR
follows:

Failure phenomenon Possible reason Failure elimination AX

1. Hub bearing (excessive pre-tightening
Adjust the pre-tightening force.
force) FR
Seizing of hub bearing
2. Bearing (inadequate or incorrect grease) Filling or replacing grease
ST
3. Bearing (dusty) Clean and fill in grease

1. Steering linkage end (too loose or tight) Check and repair the tie rod ball
BR
Adjust. If necessary, replace the failed
2. Kingpin and bush (too loose or tight)
part BW
Tyre worn abnormally or too fast Replace the bearing or tighten the nut
3. Hub bearing (worn or damaged)
according to the specified torque EL
Tighten the bearing nut according to the
4. Bearing nut (loosening)
specified torque

1. Hub bearing (too tight fitting) Undo the bearing nut

Front axle shaft end hot 2. Hub bearing (worn or pitting) Replace the hub bearing

3. Hub bearing (inadequate oil) Add grease

Replace the oil seal and coat sealant at
Hub end cover leaking 1. Hub oil seal (damaged)
the end cover

DI-439