Page 856 - Foton Workshop Manual - Auman EST-M

TR-42 Transmission and Control Mechanism - Manual Transmission

Failure phenomenon list

Use the list below to help you find the reasons of failures. The number represents the order of failure reason
possibility Check each part according to the order and replace it when necessary

Failure phenomenon Possible reason Failure elimination
1. The parts in the clutch are broken or the tightening Check the clutch moving parts. Replace the
parts are loose broken or loose fitting parts

Check the drive shaft and universal joint.
2. The cardan joint is worn seriously or the drive
Replace the broken parts or adjust the
shaft has too much clearance
coordination clearance
Check the oil level. Fill in to the specified
3. Lubricant not sufficient or gear oil deteriorates
level or replace gear oil

Check and replace the broken parts. Recover
4. Bearing or gear broken and/or worn
the worn parts
Transmission noise
abnormal 5. Vent plug leaking Replace the vent plug
6. The fork of shift fork shaft is worn seriously Replace the shift fork shaft or fork

Check if the fixing parts are loose and replace
7. Fixing parts loose or relvant moving parts broken
the broken ones
8. The gear is found with burr, bruise, breakage or
Repair the gear or replace it
ineligible tooth shape or tooth direction.
9. Synchronizer worn which causes noise in shifting Replace the synchronizer

Clean the transmission and replace with the
10. Mixture of different oil
lubricant meeting the specification
1. The control mechanism (control lever, etc.) is
improperly assembled or seriously worn that the gear Check and adjust
fails to be put properly
2. No play after the shifting rod is engaged Check and adjust

3. The self-locking component (spring, self-locking Check and replace the broken parts. Recover
pin, self-locking block) is in failure. the worn parts
Transmission off gear
4. Soldered tooth worn seriously Replace the broken part

5. Bearing or bearing hole worn seriously Replace the broken part
6. The shift fork shaft or fork is worn excessively Replace the broken part
Check the transmission fork, calibrate or
7. Transmission fork deformed
replace it

8. Gap not suitable Recheck and adjust the gap

TR-042