Caterpillar 320C / 320C EXCAVATOR GNG — Fuel Injection Pump - Remove
Repair & overhaul
For the Caterpillar 320C / 320C EXCAVATOR GNG, from the Caterpillar service manual.
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Before you start
- Keep all parts clean from contaminants.
- Contain fluids and dispose according to local regulations.
- Do not rotate the engine after the fuel injection pump is removed.
Procedure
- Ensure engine is top center on number one piston. Refer to Testing and Adjusting.
- Remove bolts (1) and washers securing cover (2) to engine front housing.
- Remove access cover. Note timing marks on fuel injection pump drive gear and idler gear.
- Scribe line across front plate (3) and mounting flange for fuel injection pump (4).
- Loosen fitting (5) for oil line (6).
- Remove oil line (6) from nipple (7). Cap openings.
- Use lifting sling and hoist to secure fuel injection pump. Weight is 13 kg (29 lb).
- Remove bolt (9) and washer from cylinder block.
- Remove four bolts (10) and washers securing fuel injection pump to front housing.
- Remove fuel injection pump (8). Gear and mounting flange remain with pump.
- Ensure old gasket material is removed from all mating surfaces.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Fuel injection pump weight 13 kg (29 lb)
Source: Caterpillar 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.