John Deere — Install Crankshaft Rear Oil Seal and Wear Sleeve
Repair & overhaul · Crankshaft / flywheel housing
From a John Deere service manual covering: 4045, 4045TF120, 6068, 6068 HF485, 6068HF158, 6068TF120, 6068TF250, 6068TFM50, 6068TFM76. Check it applies to your exact model before use.
Applies to: John Deere 4045, John Deere 4045TF120, John Deere 6068, John Deere 6068 HF485, John Deere 6068TF120, John Deere 6068TF250, John Deere 6068TFM50, John Deere 6068TFM76
Before you start
- Do not separate seal and wear sleeve
- No lubrication on sealing portion or sleeve ID; coat rubber OD of seal with light engine oil only
Procedure
- Clean crankshaft flange OD and flywheel housing ID; remove nicks or burrs.
- Install oil seal housing without seal using new gasket; snug cap screws.
- Use JDG478 Driver to center seal housing on crankshaft.
- Tighten seal housing-to-cylinder block cap screws to 27 Nm (20 lb-ft); remove driver.
- Install JDG477 Pilot on end of crankshaft with socket head screws.
- Start seal/wear sleeve on pilot with open end toward engine.
- Position JDG478 Driver and tighten nut until driver bottoms on pilot.
- Remove tool set from engine.
Tools required
- JT30040B or KCD10002A Installer Set Amazon
- JDG476 Rear Oil Seal/Wear Sleeve Installation Tool Set Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Seal housing-to-cylinder block cap screw 27 Nm (20 lb-ft)
Full service-parts list: John Deere 4045 →, John Deere 6068 →, John Deere 6068 HF485 →, John Deere 6068TF250 →, John Deere 6068TFM50 →, John Deere 6068TFM76 →
Source: John Deere service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.