Perkins — Fuel Filter Base - Remove and Install (Twin Secondary Fuel Filter)
Repair & overhaul
From a Perkins service manual — check it applies to your exact model before use.
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Before you start
- Ensure plastic tube assemblies are installed in the original positions to prevent contamination.
Procedure
- Turn fuel supply OFF and battery disconnect switch OFF.
- Drain the secondary filters.
- Make temporary identification marks on all plastic tube assemblies.
- Disconnect plastic tube assemblies (2), (3), (4) from fuel filter base; plug and cap.
- Disconnect OEM harness assembly from harness assembly (1) for differential pressure switch.
- Remove secondary filters (7) from canisters (8).
- Remove bolts (5); remove fuel filter base (6) from mounting bracket.
- Remove differential pressure switch (9) and O-ring seal (10) if necessary.
- Install new O-ring seal (10); install switch (9); tighten to 20 N·m (177 lb in).
- Position fuel filter base on bracket; install bolts (5); tighten to 44 N·m (32 lb ft).
- Install new fuel filters (7) to canisters (8).
- Connect plastic tube assemblies (2), (3), (4) and OEM harness.
- Turn fuel supply ON and battery ON; remove air from the fuel system.
Tools required
- T410437 Capping Kit Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 20 N·m (177 lb in) differential pressure switch
- 44 N·m (32 lb ft) bolts (5)
Source: Perkins 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.