Caterpillar — Determining the cause of a plugged fuel filter (ice or wax)
Testing & diagnosis · Fuel filters
From a Caterpillar service manual covering: 3054, 3056, 3176, 3208, 3406, 3412, 3500 Series, 3600 Series, C11, C13, C15, C175 Series…. Check it applies to your exact model before use.
Applies to: Caterpillar 3054, Caterpillar 3056, Caterpillar 3176, Caterpillar 3208, Caterpillar 3406, Caterpillar 3412, Caterpillar C13, Caterpillar C15
Procedure
- Remove the fuel filters.
- Cut the fuel filters open.
- Inspect the fuel filter before the filter warms. The inspection will show that the filter is filled with particles of either ice or wax.
Full service-parts list: Caterpillar 3054 →, Caterpillar 3056 →, Caterpillar 3176 →, Caterpillar 3208 →, Caterpillar 3406 →, Caterpillar 3412 →, Caterpillar C13 →, Caterpillar C15 →
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.