2009/04/01 Caterpillar

Cleaning a Plugged Diesel Particulate Filter (DPF) {108F}

Usage:

C15 B5R

Engine: C7 (S/N: C7S1-UP) C9 (S/N: C9S1-UP; MFF1-UP) C13 (S/N: LEE1-UP) C15 (S/N: B5R1-UP; SDP1-UP)

Truck Engine News SEBD6822, March 2009, "Cleaning a Plugged Diesel Particulate Filter (DPF)". Disregard this article. See the article that follows.

This publication has been written in order to inform the Caterpillar dealers of the proper method of cleaning a plugged Diesel Particulate Filter (DPF) that has exhaust back pressure that is too high for effectively performing a regeneration. This condition is caused by a failure of the regeneration system.

The DPF should be cleaned when a regeneration cannot be performed due to a plugged DPF. The Caterpillar Diesel Particulate Filter Ash Cleaning Tool should be utilized in order to properly clean a plugged DPF. Clean the DPF and then perform a stationary regeneration.

Note: DO NOT reset the ash model after the DPF has been cleaned in the Caterpillar Diesel Particulate Filter Ash Cleaning Tool. There is a high possibility that the ash is still in the trap.

Note: This procedure is in conflict with directions that are stated on the Diesel Particulate Filter Ash Cleaning Tool. The directions on the machine say not to clean a DPF unless the Ash Service Regen has been performed. This procedure is an exception in order to prevent unnecessary replacement of the DPF. This procedure enables faster repair times.