Caterpillar C15 / C15 Generator Set — Fuel System Primary Filter (Water Separator) Element - Replace
Maintenance · Fuel filter / water separator
For the Caterpillar C15 / C15 Generator Set, from the Caterpillar owner's manual.
Applies to: Caterpillar C15, Caterpillar C1.5 engine
Before you start
- Do not fill the fuel filters with fuel before installing them.
- Turn the disconnect switch OFF or disconnect the battery when changing fuel filters.
Parts for this job
- 1R0749 Fuel filter Amazon Amazon eBay $135.88 eBay $135.88 NAPA $28.51 NAPA $28.51 KuduParts $17.00 FridayParts $47.50
Part numbers from the service-parts list for Caterpillar C15. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Turn the start switch to the OFF position or disconnect the battery.
- Shut off the fuel supply.
- Turn drain valve (3) counterclockwise in order to open. Drain the water and sediment.
- Close the drain valve. Hold the bottom of the filter and loosen the bowl. Remove the bowl.
- Turn the filter counterclockwise in order to loosen. Remove and discard the filter.
- Clean the bottom of the filter mounting base and remove all of the old filter seal.
- Clean the water separator bowl and seal groove. Inspect the seal; replace if worn or damaged.
- Lubricate the seal and place it in the groove on the water separator bowl.
Tools required
- Strap wrench (if the filter will not turn) Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Tighten the bowl assembly to 15 N·m (11 lb ft).
- Tighten the filter by hand until the seal contacts the base, then tighten an additional 1/3 to 1/2 rotation.
Full service-parts list: Caterpillar C15 →
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.