Installation Of The 033-6039 O-Ring Seal Into The 3408E And 3412E Unit Injector Hydraulic Pump{1251} Caterpillar

Engine:

3408E Machine (S/N: 80M3679-UP)

3412E Machine (S/N: 99C6453-UP)

3408E Industrial (S/N: 7PR717-UP)

3412E Industrial (S/N: 4CR1330-UP)

3412E Industrial (S/N: BDT216-UP)

3412E Marine (S/N: 9KS791-UP)

Introduction

The design of the groove for the O-ring has changed. The proper O-ring should be used in order to match the design of the groove.

Illustration 1	g00715900
(1) O-Ring seal

Illustration 2	g00716166
Old O-Ring groove Use with 9X-7680 O-Ring Seal

Illustration 3	g00716168
New O-Ring groove Use with 033-6039 O-Ring Seal

Improved Kits

One extra O-ring of the new size will be included within each kit. The affected kits are listed in table 2.