Motor Grader Intermediate Shaft – Spline and Bearing Guide
An intermediate shaft connects rotating components within a motor grader transmission or driveline. A correct replacement must reproduce the spline interfaces, bearing seats, shoulders, seal lands and axial geometry.
Which shaft data is essential?
| Section | Verification |
|---|
| Location | Assembly name, shaft position and connected input/output parts |
| Splines/gears | Tooth count, diameters, working length and orientation |
| Bearings | Journal diameters and lengths, shoulder positions and bearing codes |
| Seals | Seal-land diameter, width and surface condition |
| Axial features | Total length, circlip grooves, threads, spacers and preload arrangement |
Failure evidence
Fretted splines can indicate loose fit or torsional movement. Blueing can indicate heat, while a grooved seal land may explain leakage. Check runout and mating bearings under the specified procedure. Debris patterns can help distinguish gear damage from bearing failure.
Installation planning
Keep bearings and spacers in identified order during teardown. Use the required pressing tools and preload or end-play procedure. Do not hammer through rolling elements or use a worn mating spline with a new shaft.
Related shaft pages
Compare the general shaft measurement guide and the gear shaft page.
FAQ
Can the shaft be matched by spline count?
No. Spline form, diameters, length, journals and axial features must also match.
Should bearings be reused?
Follow the service inspection criteria; failure debris or damaged races may require replacement.
Why record spacer order?
It may control gear alignment, bearing preload or end play.
Compatibility note: Confirm the shaft within its complete assembly before supply.
