Broken Tappet Springs on the 3406E, 3456, C-15, C-16, C-18, and C32Engines{1290} Caterpillar

Engine:

3406E (S/N: 5GF1-UP; 5EK1-UP; 1MM1-UP; 2WS1-UP; 4AS1-UP; 5DS1-UP; 6TS1-UP; 1LW1-UP)

C-15 (S/N: EGH1-UP; MBN1-UP; 6NZ1-UP; 9NZ1-UP)

C-16 (S/N: W1A1-UP; 7CZ1-UP)

C-18 (S/N: MDP1-UP)

Generator Set:

3406E GEN SET (S/N: 9NN1-UP; 8AZ1-UP)

3456 GEN SET (S/N: BGA1-UP; CCB1-UP; EPE1-UP; C1G1-UP; C3G1-UP; C4G1-UP; CAH1-UP; GHJ1-UP; C2T1-UP; CBX1-UP)

C18 GEN SET (S/N: C6C1-UP; G4C1-UP; STM1-UP)

Industrial Engine:

3406E IND (S/N: 6BR1-UP)

3456 IND (S/N: 3LW1-UP)

C-15 IND (S/N: BEM1-UP)

C-16 IND (S/N: BFM1-UP)

Marine Engine:

3406E MARINE (S/N: 9WR1-UP)

C15 MARINE (S/N: RLA1-UP)

C18 MARINE (S/N: WKB1-UP; PLE1-UP; CKH1-UP; C1J1-UP)

C32 MARINE (S/N: RNC1-UP; T3T1-UP)

Petroleum Engine:

C-15 PETROLEUM (S/N: Z2C1-UP)

Introduction

The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.

Problem

There have been reports of a broken tappet spring in the fuel injectors of the above listed engines. The broken spring is causing a low power condition and noises in the engine.

Solution

Photos are required for the replacement of the injectors in Table 1. Provide detailed pictures of the broken injector tappet spring, injector serial number and color of any markings on the spring to your Dealer Technical Communicator. Caterpillar will determine if the injectors need to be returned for analysis.