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M/T Symptom Troubleshooting Index

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