Vehicle Moves In D, D3, and M, But Not In R

Vehicle moves in D, D3, and M, but not in R

Diagnostic Procedure:

1. Shift fork shaft stuck

2. 5th accumulator defective

3. 5th clutch defective

4. Reverse gears worn or damaged

5. Reverse idler gear shaft/holder worn or damaged

Also check for:

- Check the 5th clutch pressure.
- Check for a missing shift fork bolt on the shift fork shaft.
- Inspect the reverse selector gear teeth chamfers, and inspect the engagement teeth chamfers of the countershaft 5th gear and reverse gear. Replace the reverse gears and the reverse selector if they are worn or damaged. If the transmission makes clicking, grinding, or whirring noises, also replace the mainshaft 5th gear, reverse idler gear, and countershaft 5th gear.
- Inspect the clutch piston, clutch piston check valve, and O-rings. Check the spring retainer for wear and damage. Inspect the clearance between the clutch end-plate and the top disc. If the clearance is out of tolerance, inspect the clutch discs and plates for wear and damage, and also inspect the clutch wave-plate height. If the discs and plates are worn or damaged, replace the discs and plates as a set. If the wave-plate height is out of tolerance, replace the wave-plate. If the discs and plates are OK, adjust the clearance with the clutch end-plate.