Remanufactured 3126 Cylinder Heads with Incorrect Valve Seats{1100} Caterpillar

Engine:

3126B (S/N: BKD1-UP; BEJ1-UP; 8YL1-UP; 7AS1-UP; 6PZ1-UP; BES1-UP)

Truck Engines:

3126E (S/N: CKM1-UP; HEP1-UP; 9SZ1-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

Certain 0R-8849 Cylinder Head Gp were built with the incorrect valve seats. The incorrect valve seats will cause the piston to contact the valve.

Solution

Remove all 0R-8849 Cylinder Head Gp in parts stock with a date code 1October 2006 through 8August 2007 that satisfy the conditions below.

Note: The date code is located on the part number tag on the outside of the box. The date code appears as DDMMYY. For example D01M10Y06 is 1October 2006.

• Remove all 0R-7907 Cylinder Block Gp and 0R-9904 Cylinder Block Gp with date codes of 1October 2006 and 8August 2007 that satisfy the conditions below.

• Remove all remanufactured BES2078-2538 that satisfy the conditions below. The 3126 engines are listed in Table 1.

Illustration 1	g01413602

Inspect all 0R-8849 Cylinder Head Gp that have bosses (1). Refer to Illustration 1. Inspect the number for the cylinder head casting at location (2).

Illustration 2	g01413613

Remanufactured engines and remanufactured long blocks that have the original cylinder head casting number ground off and replaced with 205-1270 must be removed from parts stocking.