Hercules G-1600 — To Disassemble the Oil Pump for Inspection
Repair & overhaul · lubrication system
For the Hercules G-1600, from the Hercules service manual.
Procedure
- Turn engine so number one cylinder is at top dead center and distributor rotor at #1 terminal; remove distributor.
- Remove attaching screws and carefully pull pump down out of the engine.
- Remove the suction-screen and line assembly and then the bottom cover assembly.
- Remove the idler gear.
- Drill the pin out of the distributor drive-and-shaft assembly, press the shaft out of the distributor gear, and pull the shaft and driven gear from the pump body.
- Remove cotter pin, spring seat, regulating spring and piston from the base plate in that order.
- Inspect all parts carefully for cracks, scores, wear, or excessive clearance; discard entire pump assembly if worn.
Tools required
- drill Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Distributor tang of pump shaft practically parallel with crankshaft, notch in gear toward front of engine
Source: Hercules 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.