C-10 and C-12 Truck Engines Caterpillar

Illustration 1	g00280833
Oil filter base

(1) Oil cooler bypass valve

Opening pressure ... 155 ± 17 kPa (22.5 ± 2.5 psi)

(2) Oil filter base

Tighten the stud that holds the oil filter (3) to the oil filter base to the following torque. ... 68 ± 7 N·m (50 ± 5 lb ft)

(3) Oil filter

(4) Bolts

Apply 9S-3263 Thread Lock to each of the six bolts.

Illustration 2	g00280834
Section A-A

Bypass opening pressure differential ... 170 kPa (25 psi)

(5) Seal

(6) 8M-3182 Spring

Assembled length ... 63.5 mm (2.50 inch)

Load at assembled length ... 36.5 N (8.21 lb)

Free length after test ... 91.7 mm (3.61 inch)

Outside diameter ... 20.6 mm (0.81 inch)

(7) Seal

(8) Plunger

(9) Seal

Illustration 3	g00280835
Section B-B

(10) 2N-6005 Spring

Assembled length ... 96.5 mm (3.80 inch)

Load at assembled length ... 92.5 N (20.80 lb)

Minimum operating length ... 45.7 mm (1.80 inch)

Load at minimum operating length ... 257.6 N (57.91 lb)

Free length after test ... 124.7 mm (4.91 inch)

Outside diameter ... 21.8 mm (0.86 inch)

(11) Valve

(12) Seal

(13) Seal

Illustration 4	g00280836
Section C-C

Relief pressure ... 696 kPa (101 psi)

(14) Spacer

(15) 1A-2170 Spring

Assembled length ... 21.4 mm (0.84 inch)

Load at assembled length ... 198.0 ± 13.4 N (44.50 ± 3.00 lb)

Free length after test ... 31.0 mm (1.22 inch)

Outside diameter ... 19.6 mm (0.77 inch)

(16) Seal

Illustration 5	g00280977
Oil cooler bypass valve

(17) Minimum stroke ... 8.4 mm (0.33 inch)

(18) Length of fully compressed valve ... 44.2 ± 1 mm (1.74 ± 0.04 inch)

(19) Length of fully extended valve ... 52.6 ± 1 mm (2.07 ± 0.04 inch)

(B) Position B (Closed)

Start to close temperature ... 100 to 103°C (212 to 217°F)

Position B will activate at a specific temperature. Temperature ... 111°C (232°F)

Bypass opening pressure differential ... 155 ± 17 kPa (22.5 ± 2.5 psi)

Higher than normal activation temperature ... 127°C (261°F)

Note: At higher than normal activation temperature, the oil cooler bypass valve will stroke to position B. At higher than normal activation temperature, the oil cooler bypass valve will remain at position B.