Page 1004 - Foton Workshop Manual - Auman EST-M

FR-4 Frame, Suspension and Tire - Frame

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

Run with reasonable load and at
1. Run with overload for long.
reasonable speed.
2. Fatigue crack caused by driving on a
Replace the
rough road for long time
Frame broken
3. Increase the number of plates without Keep the quantity of original design
following the regulations steel plates and specifications

4. There is original crack in the frame Welding or replace with new parts

5. Collision or turnover accident Replace the
Difference between the right and left
1. The elasticity of front left and right plate
<10~15mm, replace the qualified leaf
springs is not uniform
spring
The height
2. Frame deformed seriously Adjust the frame
difference on the
left and right of 3. Cab support height difference too much Check and adjust
driver cab is too 4. The air pressure difference in the tyres is Adjust to make the air pressure in the
large (seen from too much left and right tyres the same
front)
Use the typres with small wearing
5. Tyre wearing difference too much
difference

6. Tyre dimensions different Use the same spec tyres

1. Drive shaft worn seriously Repair the drive shaft

2. Drive shaft dynamic unbalance value too
The drive shaft balances
much
Body resonating
and serious shaking 3. Rear axle differential mechanism worn
Repair the differential mechanism
during driving excessively

4. Suspension elasticity too low Replace the plate spring

5. The tyre dynamic unbalance too much Adjust the tyre balance

FR-004