John Deere — Locking Collar Installation
Installation · Pump driver shaft / PTO shaft
From a John Deere service manual — check it applies to your exact model before use.
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Before you start
- The locking collar is off-center on the pump driver shaft when properly installed.
Procedure
- Slide collar onto pump driver shaft.
- Thread the longer set screw 'A' through the locking collar and partially through the threaded hole in the pump driver shaft; allow a minimum of 1/8" [3.175 mm] clearance.
- Thread the shorter set screw 'B' into the other threaded hole in the locking collar.
- Slide pump driver hub over PTO shaft; be sure PTO groove is under set screw 'A'.
- Tighten screw 'A' very securely with a 3/16" allen wrench.
- Tighten set screw 'B' very securely with the same wrench; this binds set screw 'A'.
Tools required
- 3/16" allen wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Allow a minimum of 1/8" [3.175 mm] clearance between the locking collar and the pump driver shaft at set screw 'A'
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.