John Deere — Install Crankshaft Rear Oil Seal and Wear Sleeve Assembly
Installation · Crankshaft Rear Oil Seal Housing
From a John Deere service manual — check it applies to your exact model before use.
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Before you start
- Handle seal and wear sleeve assembly carefully; if assembly becomes separated, discard and install a new assembly.
- Locate crossbar of installer at 90° to Allen head cap screws so crossbar bottoms on pilot.
- No lubrication of any kind is to contact the seal when installing.
Procedure
- Apply a light coating of LOCTITE 609 Retaining Compound completely around leading edge of crankshaft flange; wipe away any sealant on seal housing bore.
- Install JDG477(85) Pilot on end of crankshaft using the Allen head cap screws supplied with tool set; tighten securely.
- Carefully start oil seal/wear sleeve assembly over pilot and crankshaft flange with open side of seal toward engine.
- Position JDG478 Driver so hole in cross plate goes over threaded stud of pilot; install washer and nut on stud.
- Tighten nut to draw driver in until crossbar bottoms on pilot; seal and wear ring assembly is then correctly positioned.
- Remove JDG476(85) Tool Set from engine.
Tools required
- JDG476(85) Oil Seal and Wear Sleeve Installer Set (JDG477(85) Pilot, JDG478 Driver)
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
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.