Steering Cylinders:
Issue: External leakage at rod seal
Root Cause: Contaminated fluid (ISO 4406 >18/16/13)
Solution: Replace seal kit, flush system with Cat HYDO Advanced 10
Hoist Cylinders:
Issue: Cylinder drift (slow retraction)
Root Cause: Worn piston seals or check valve failure
Solution: Rebuild cylinder with 6I-3207 seal kit
Suspension Cylinders:
Issue: Harsh ride quality
Root Cause: Nitrogen pressure loss (should be 80-100 bar)
Solution: Recharge accumulators using Cat CH-100 nitrogen kit
This 328-3989 front suspension cylinder is used for 740B 735B 740 745 740GC caterpillar truck.
ARTICULATED TRUCK
740 GC 735B 745 740B
EJECTOR TRUCK
740B
289-3054
460-5225
460-5226
382-6077
374-3499
2J-6362
140-0942
2M-3903
2W-6466
1W-7076
2893054
4605225
4605226
3826077
3743499
2J6362
1400942
2M3903
2W6466
1W7076
