| Symptom | Probable cause(s) | Diagnostic procedure | |
|---|---|---|---|
| Hard to shift into 1st gear | 1. 2. 3. 4. | 1st synchro ring defective. 1st/2nd synchro sleeve and hub defective. 1st gear defective. Change lever assembly defective. | |
| Hard to shift into 2nd gear | 1. 2. 3. 4. | 2nd synchro ring defective. 1st/2nd synchro sleeve and hub defective. 2nd gear defective. Change lever assembly defective. | |
| Hard to shift into 3rd gear | 1. 2. 3. 4. | 3rd synchro ring defective. 3rd/4th synchro sleeve and hub defective. 3rd gear defective. Change lever assembly defective. | |
| Hard to shift into 4th gear | 1. 2. 3. 4. | 4th synchro ring defective. 3rd/4th synchro sleeve and hub defective. 4th gear defective. Change lever assembly defective. | |
| Hard to shift into 5th gear | 1. 2. 3. 4. | 5th synchro ring defective. 5th/6th synchro sleeve defective. 5th gear defective. Change lever assembly defective. | |
| Hard to shift into 6th gear | 1. 2. 3. 4. | 6th synchro ring defective. 5th/6th synchro sleeve defective. 6th gear defective. Change lever assembly defective. | |
| Hard to shift into reverse | 1. 2. 3. 4. 5. | Reverse shift fork defective. Reverse idler gear defective. Reverse gear defective. Change lever assembly defective. Reverse lockout system defective. | |
| Noise from the transmission | 1. 2. 3. | Low transmission fluid level. Worn or damaged transmission gears. Worn or damaged transmission bearings. |
|
| Shift lever does not operate smoothly | 1. 2. | Shift cable defective. Joint in shift cable and transmission or body. |
|
| Transmission jumps out of gear | 1. 2. | Detent ball springs defective. Worn synchro gear teeth. |
|