Caterpillar 3126B / 3126B Industrial Engine — Fuel System Secondary Filter - Replace
Maintenance · Secondary fuel filter
For the Caterpillar 3126B / 3126B Industrial Engine, from the Caterpillar owner's manual.
Applies to: Caterpillar 3126B, Caterpillar 3126B Industrial Engine engine
Before you start
- Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire.
- Do not fill the secondary fuel filter with fuel before installing.
Procedure
- Stop the engine. Turn the ignition switch to the OFF position or disconnect the battery. Shut off the fuel supply valve (if equipped).
- Remove the used fuel filter and discard it.
- Clean the gasket sealing surface of the fuel filter base. Ensure all of the old gasket is removed.
- Apply clean diesel fuel to the new fuel filter gasket.
- Install the new fuel filter. Spin on until the gasket contacts the base. Tighten an additional one turn (360 degrees) by hand.
- Open the fuel supply valve. Prime the fuel system. Start the engine and inspect for leaks.
Specs & values
- Tighten filter an additional one turn (360 degrees) by hand
- Two micron absolute high efficiency fuel filter required
Full service-parts list: Caterpillar 3126B →, Caterpillar 3126B Industrial Engine engine →
Source: Caterpillar 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.