Magnum MTP4000S — Reassembly - Seal Installation
Repair & overhaul · Mechanical seal
For the Magnum MTP4000S, from the Magnum operator's manual.
Applies to: John Deere PE4024TF281 engine
Before you start
- Do not use grease or silicone lubricants on the stationary seat bore and O-ring
Procedure
- Thoroughly clean the shaft where the mechanical seal will be installed and the seat of the seal housing.
- Place the sleeve O-ring over the shaft, past the threads and up against the shaft shoulder.
- Lubricate the stationary seat bore and stationary seat O-ring with P-80, 30 wt. motor oil, or liquid dish detergent and water.
- Remove the plastic, U-shaped seal-setting spacer from the cartridge seal assembly.
- Slide the cartridge seal assembly over the shaft with the stationary seat towards the bore.
- By hand only, press on the flanged end of the cartridge seal sleeve until the stationary seat bottoms in the bore.
- Install impeller according to instructions.
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.