Gravely Promaster 400 - Transaxle Troubleshooting

6 - 30
6.12 TRANSAXLE TROUBLESHOOTING
CAUSE REMEDY
Unit Cannot Be Shifted (Or Difficult To Shift)
Gears improperly installed Review positioning of gearing.
Forks and rod assembly incorrectly installed Remove assembly. Recheck and correctly position parts.
Axle Housing not installed or not tightened Seal retainers are not properly sealed. Tighten axle housing bolts.
Same items covered under heading, "Axles
cannot be turned (same direction) while unit is
in neutral gear:
Review remedy listed
Shifting lever improperly positioned Determine if finger of shifting lever is correct for the unit and is correctly
installed. Make sure shift lever housing has required gasket.
Shift lever housing misaligned to case Check if alignment marks on the unit are correctly positioned. Also,
determine if bend on shaft is in correct position.
Parts missing Install missing parts
Equipment clutch not disengaged Adjust clutch according to equipment instruction.
Shifter stop assembled backwards Determine that notch in STOP aligns with shifter forks in NEUTRAL
position.
Chamfer on shift gears on wrong side Check that bevels on shifter gears are correct (fork flanges should be
toward each other). On 3 gear cluster, small gear and medium gear
chamfers go down toward big gear.
Improper fit of case to cover Recheck positioning of thrust washers. A misplacement or omission of
washer can cause binding.
Dowel pins not installed Check unit for correct assembly of parts.
Gears improperly installed Check unit for correct assembly of parts.
Input shaft not properly installed Input shaft spline must be fitted into gear and must be tapped completely
into the case.
Differential installed improperly Re-check positioning of bolts in differential - must be opposite output shaft
gear
Seal retainers improperly positioned Check that seals are correctly installed
Unit Is Noisy
Gearing is overly noisy - chatter, etc. Check oil level.
Metallic pieces and/or other foreign objects in
unit
Remove bits of broken metal, loose washers, etc.
Worn gears Remove and replace with new gears.
Worn bearings - mainly input shaft ball bearing Replace bearing.
Unit Jumps Out Of Gear
Shifting lever improperly assembled in housing Disassemble shifting lever and check for proper assembly.
Teeth of gears are worn beyond tolerances Replace worn gears.
Spring in shifter fork weak or broken Replace spring.
Attaching screws for shift lever and housing
assembly not properly torqued
Torque screws to 10 ft-lbs (44.5 Nm).