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Mon - Fri 9AM - 5PM, Sat by appt.

Tremec TransmissionsElite Distributor

FAQ

ProblemPossible CauseRemedy
Will not shift (control lever moves)
  • Control lever assy. broken or damaged.
  • Damaged offset lever, shift fork, selector plate or selector arm
  • Replace control lever and housing assy.
  • Remove extension or adapter and case cover. Check for damaged parts. Replace damaged parts
Hard shift or control lever will not move into gear
  • Clutch not releasing
  • Improper or low transmission lubricant
  • Shifter shaft or shift rail binding
  • Binding of sliding synchronizers or gears
  • If reverse only, seized backup switch
  • Worn or damaged flywheel pilot bushing Bell housing misaligned
  • Adjust or replace clutch
  • Add or drain and replace with proper lubricant
  • Remove extension or adapter and case cover. Check for damaged parts. Replace damaged parts
  • Remove extension or adapter and case cover. Reach down into transmission and check that synchronizers and gears (parts with shifting grooves) slide freely on shafts. Remove and replace damaged parts
  • Remove and check backup switch. Replace if seized
  • Replace pilot bushing
  • Align bell housing to within 0.010 inch TIR on face and in bore
Gears clash when shifting
  • Engine idle speed too high
  • Clutch damaged or out of adjustment
  • Pilot bearing between input shaft and Output shaft binding
  • Damaged synchronizer
  • Bell housing misaligned
  • Damaged gear or gears
  • Worn or damaged flywheel pilot bushing
  • Adjust idle speed to specifications
  • Adjust or replace clutch
  • Disassemble and check bearing rollers, input shaft ID and output shaft OD. Replace damaged parts
  • Disassemble and check for damaged synchronizer parts. Replace damaged parts
  • Align bell housing to within 0.010 inch TIR on face and in bore
  • Disassemble and check for gear damage Replace damaged gears
  • Replace pilot bushing
Transmission jumps out of gear
  • Loose transmission or flywheel housing bolts, improper alignment
  • Synchronizer damaged or excessively worn
  • Blocking ring damaged, worn index slots or friction surfaces worn or damaged
  • Excessive countershaft endplay
  • Shifting fork loose on shaft or rail; worn or damaged fork or inserts
  • Torque bolts to specifications. Realign if necessary
  • Disassemble and check for worn or damaged synchronizer parts. Replace damaged parts
  • Disassemble and check blocking ring for wear or damage Replace worn or damaged parts
  • Disassemble and check. Replace worn or damaged parts. Re-shim if roller bearings used
  • Disassemble and check for wear or damage. Replace worn or damaged parts
Transmission locked in one gear
  • Fork or offset lever loose on shaft or rail
  • Worn or damaged forks, offset lever, shaft or rail
  • Worn or damaged synchronizer
  • Worn or damaged gears
  • Remove extension or adapter and case cover. Check for loose parts on shifter shaft or rail. Replace roll pin(s). If still loose, replace shaft or rail and/or attached parts as required
  • Remove extension or adapter and case cover. Check for wear or damage Replace damaged parts
  • Disassemble and check for worn or damaged synchronizer parts. Replace worn or damaged parts
  • Disassemble and check for worn or damaged gears. Replace worn or damaged gears
Transmission noise NOTE: Make sure noise is coming from transmission and not clutch release bearing or other components.
  • Improper or low transmission lubricant
  • Loose bolts or other attaching parts
  • Improper flywheel housing to engine crankshaft alignment
  • Noisy transmission bearings
  • Noisy gears
  • Add or drain and replace with proper lubricant
  • Make sure all attaching parts are torqued to specifications
  • Check alignment and correct if neces­sary per vehicle service manual
  • Disassemble and check bearings, bear­ing rollers and parts in and on which they operate for wear or damage. Replace worn or damaged parts
  • Disassemble and check for worn or damaged gears (including speedometer gear). Replace worn or damaged gears
Transmission leakage
  • Leakage from other components
  • Vent or breather clogged
  • Too much or improper lubricant
  • Loose bolts at sealing faces. Improperly applied sealant
  • Worn or damaged oil seal
  • Verify transmission leakage. Thoroughly clean all exposed surfaces, then check for leaks.
  • Remove vent or breather and clean or replace
  • Remove fill plug to check for excess, or drain and replace
  • Torque bolts to specifications
  • Separate and thoroughly clean leaking surfaces. Reapply sealant. Replace parts and torque bolts to specifications
  • Replace oil seal