Magnum MTP4000S — Reassembly - Rotating Assembly
Adjustments
For the Magnum MTP4000S, from the Magnum operator's manual.
Applies to: John Deere PE4024TF281 engine
Before you start
- If the impeller continues to rub on the wear plate, repeat the adjustment procedure
Procedure
- Re-grease O-ring and install rotating assembly into volute; installation is the reverse of removal.
- Evenly tighten rotating element bearing housing fasteners until impeller lightly contacts wear plate.
- Tighten bearing housing jack screws until .010 to .020 in (.25 to .50 mm) increase in clearance is achieved.
- Rotate shaft and verify no impeller/wear plate contact or rubbing.
- Tighten the jack screws at each corner of the bearing housing, then tighten the jack screw lock nuts.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Clearance increase .010 to .020 in (.25 to .50 mm)
Source: Magnum operator's 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.