2000/02/07 Caterpillar

Agricultural Tractor:

65E (PIN: 1GM1-UP; 6GS1-UP)

75C (PIN: 4KK1-UP)

75D (PIN: 5AR1-UP)

75E (PIN: 1HM1-UP; 6HS1-UP)

85C (PIN: 9TK1-UP)

85D (PIN: 4GR1-UP)

85E (PIN: 1NM1-UP; 6JS1-UP)

95E (PIN: 1SM1-UP; 6KS1-UP)

Combine:

480 (PIN: 2BZ1-UP)

485 (PIN: 8ZW1-UP)

Excavator:

345B (PIN: 6XS1-UP; 2NW1-UP; 6MW1-UP; 8KW1-UP)

345B L (PIN: 4SS1-UP; 5WS1-UP; 7KS1-UP; 9GS1-UP; 2SW1-UP; 8RW1-UP; 9CW1-UP)

345B Series II (PIN: AMD1-UP; ANJ1-UP; AMN1-UP; AGS1-UP)

365B L (PIN: 4XZ1-UP; 9PZ1-UP; 9TZ1-UP)

Load Haul Dump:

R1600 (PIN: 9EW1-UP)

R1700G (PIN: 8XZ1-UP)

Pumper, Cement:

CPS361 (PIN: 9KZ1-UP)

CPT372 (PIN: 1WZ1-UP)

Description of Change: A new oil filter base group is now used on the engines in these machines. The thermostatically controlled oil cooler bypass valve was replaced by a spring-loaded valve. This change has no effect on the operation of the oil filter base group.

Adaptable To: The new 166-1329 Oil Filter Base Group is a direct replacement for the former 122-0725 Oil Filter Base Group. The former oil filter base group has been canceled. The new 166-1329 Oil Filter Base Group is adaptable to all of the engines in the listed machines. The new 166-1329 Oil Filter Base Group became effective with the following engine serial numbers: 3176C (S/N: 7ZR3741) and 3196 (S/N: 6AR1883)

Identification of the Components of the New 166-1329 Oil Filter Base Group

The new 166-1329 Oil Filter Base Group is not serviced at the group level. Illustration 1 and Table 1 identify the individual components of this group.

Illustration 1	g00673681

Procedure for Conversion of the Former 122-0725 Oil Filter Base Group

Table 2 lists the new parts for converting the former 122-0725 Oil Filter Base Group to the new 166-1329 Oil Filter Base Group.

Perform the following procedure to convert the former 122-0725 Oil Filter Base Group to the new 166-1329 Oil Filter Base Group .

1. Disassemble the former 122-0725 Oil Filter Base Group. Refer to the Disassembly and Assembly, "Engine Oil Filter Base " section.

2. Replace the 9M-0853 Relief Valve Plunger with a 1P-1367 Plunger .

Illustration 2	g00672559
Components of the former 122-0725 Oil Filter Base Group

3. Assemble all of the components from the former 122-0725 Oil Filter Base Group into the new 166-1328 Base except for the components that are identified in Illustration 2 and Table 3. Discard the components that are identified in Illustration 2 and Table 3 except for hard washers (2) and O-ring seal (4). Hard washers (2) and O-ring seal (4) will be used in Step 4. Refer to the Disassembly and Assembly, "Engine Oil Filter Base" section.

Illustration 3	g00672572
Components of the new 166-1329 Oil Filter Base Group

4. Refer to Illustration 3 and Table 4 in order to perform the following procedure:

   1. Install plunger (8), spring (10), and O-ring seal (4) into the new 166-1328 Base .

   2. Install cover (9), hard washers (2), studbolt (6), and bolt (7) into the new 166-1328 Base .