Motor Grader Shift Fork Assembly – Groove, Rail and Wear Guide
A motor grader shift fork moves a sliding collar or gear inside the transmission. Small differences in offset, groove width or rail bore can prevent full engagement and cause repeat gear damage.
Ordering basis: Confirm gearbox identity, fork width, rail diameter, offset, pads and all casting marks.
Fork geometry to document
Measure groove width and pad thickness.
Record rail bore, pin holes and fork offset.
Photograph casting marks and both wear faces.
Identify the mating collar and gearbox model.
Read the wear pattern
Uneven pad wear, blueing or bent arms can indicate incomplete clutch release, rail misalignment, excessive end play or operator force. Inspect the rail, detents, collar and bearings.
Assembly and shift verification
Restore pins and retainers in their documented positions. Confirm free rail travel and full collar engagement before closing the gearbox, then test every range at low load.
Product record
| Component | Transmission shift fork assembly |
| Part number | Not shown — verify from the original component or parts catalogue |
| Fitment rule | gearbox model, fork groove width, rail bore, offset and engagement geometry |
Related product reference
Review the motor grader turbine gear guide for another component-level identification workflow. The linked product is a reference only and does not establish interchangeability.
FAQ
Can a fork be matched by overall shape?
No. Groove width, rail bore, offset and mating collar must match.
Why does a new fork wear quickly?
Misalignment, end play or incomplete engagement may still be present.
What photographs help most?
Show both fork pads, rail connection, casting marks and the mating collar.
Compatibility note: Verify gearbox and engagement geometry before ordering.
