Waukesha TH570 — Oil Pump Reassembly
Repair & overhaul
For the Waukesha TH570, from the Waukesha service manual.
Applies to: Waukesha 570 and 884 engine
Before you start
- New bushings should be used whenever the pump is disassembled.
Procedure
- Press pump gear on drive shaft with Woodruff key.
- Lock pump gear with snap ring.
- Insert drive shaft through pump body.
- Check pump gear end clearance with feeler gauge and straight edge.
- Press drive gear on with Woodruff key.
- Check clearance between pump and drive gear.
- Press roll pin through drive gear hub and drive shaft.
- Install idler pump gear with oil holes toward drive gear end.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Pump gear end clearance .0015-.006 in H570
- Drive gear clearance .005 in min H570
- Drive gear clearance .002-.005 in H884
- Idler shaft end clearance 1/32 in
Source: Waukesha 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.