Page 932 - Workshop Manual - Aumark (BJ1051)

31B-12
Transmission 6g120 - transmission assy

Problem symptoms table

Use the table below to help you find the cause of the problem. The numbers indicate the probability of the cause
of the problem. Check each part in order. If necessary, replace these parts.

Symptom Suspect Area Reference

1. Lubricating oil (The viscosity is -
too low)
2. Lubricating oil (Not enough) -
3. Bearing (Over worn or Chapter 31 a transmission
damaged) 6g120-transmission assy, overhaul

4. Gear shift fork and Chapter 31 a transmission
synchronizer gear (The 6g120-secondary-axle assy, overhaul
The abnormal sound or noise is too combination is not appropriate)
big.
5. Synchronizer (Worn or Chapter 31 a transmission
damaged) 6g120-secondary-axle assy, overhaul

6. Gear tooth (Scratched or worn) Chapter 31 a transmission
6g120-transmission assy, overhaul

7. Transmission housing Chapter 31 a transmission
(Distorted and deformed) 6g120-transmission assy,
replacement
1. Lubricating oil (The viscosity is -
too big)
2. Clutch (The separation is not Chapter 32 clutch-clutch assembly
complete) part, overhaul

3. Bearing (Over worn or Chapter 31 a transmission
damaged) 6g120-transmission assy,
replacement
4. Synchronizer (Damaged) Chapter 31 a transmission 6g120-
secondary -axle assy, overhaul
It is difficult to engage a gear for the 5. Shift fork catch bolt (Loose) Chapter 31 a transmission
transmission. 6g120-upper cover assy, overhaul
31B
6. Gear shift fork (Deformed or Chapter 31 a transmission
damaged) 6g120-upper cover assy, overhaul

7. Fork shaft (Deformed or Chapter 31 a transmission
damaged) 6g120-upper cover assy, overhaul

8. Lock steel ball (Over worn) Chapter 31 a transmission
6g120-upper cover assy, overhaul

Page 932