John Deere — Torque Chain Installation
Installation · Pump casing / tractor frame
From a John Deere service manual — check it applies to your exact model before use.
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Before you start
- Any sideways pull may damage the pump bearings.
Procedure
- Remove one pump casing outboard bolt (farthest away from the PTO shaft).
- Using a 1/4" longer bolt and two flat washers, attach a length of chain to the bolt between the washers and insert into pump casing.
- Secure the other end of the torque chain to something solid on the tractor, preferably above the pump.
- Attach a spring to the torque chain to prevent start-up shock.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- The torque chain must be in a straight upward or downward line from the pump.
- The torque chain should have some slack to allow the pump to 'float' on the PTO shaft.
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.