Hercules — To Disassemble the Water Pump
Repair & overhaul
From a Hercules owner's manual — check it applies to your exact model before use.
Before you start
- The shaft and bearing assembly is one unit and no attempt should be made to disassemble these parts.
Procedure
- Remove the snap ring (A) and pull the fan pulley hub (B) from the pump shaft and remove the snap ring (C).
- Remove the screws (K) from the water pump to cover plate and remove the plate (I) and gasket (H).
- Place the front of the pump on a suitable support in an arbor press and press the shaft and bearing assembly out of the pump body (F) and impeller (G).
- Press the seal (E) out of the pump body.
- Wash and clean all parts thoroughly, inspect for wear and damage; replace the seal surface of the impeller if grooved.
- Put a coating of grease on the seal surface before reassembly.
Tools required
- Arbor press Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Source: Hercules owner'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.