3508C, 3512C and 3516C Locomotive Engines Caterpillar

Engine Oil Cooler Bypass and Cooling Jet Sequence Valves

Usage:

3508C F1X

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Illustration 1	g02849443
Right side view

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Table 1
Specification for 245-3678 Engine Oil Lines Gp
Item	Qty	Part	Specification Description
1	2	0S-1571 Bolt	Use the following tightening sequence for the clamp bolts: 1. Snugly tighten clamp assembly (2) to the tube assembly (3). 2. Tighten bolts (1) to elbow assembly (5) to 47 ± 9 N·m (35 ± 7 lb ft). 3. Tighten bolts (4) of the clamp assembly to the tube assembly (3) to 47 ± 9 N·m (35 ± 7 lb ft).
4	2	0S-1594 Bolt
6	6	109-2332 O-Ring Seal	Lubricate the bore lightly with the fluid that is being sealed.
7	2	7N-7697 Plunger	The cooling jet sequence valves must start to open at a pressure difference of 130 ± 30 kPa (19 ± 4 psi). The cooling jet sequence valves must be fully open at a pressure difference of 200 ± 30 kPa (29 ± 4 psi).
8	2	6B-9202 Spring	Length under test force is 68.3 mm (2.69 inch).
			Test force is 84.5 to 99.6 N (19.0 to 22.4 lb).
			Free length after test is 112.8 mm (4.44 inch).

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Illustration 2	g02849445
Top view

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Table 2
Item	Qty	Part	Specification Description
9	1	2W-1053 Plug	Torque to 100 ± 15 N·m (74 ± 11 lb ft).
10	1	2W-1969 Bypass Valve	The oil cooler bypass valve must open with a pressure difference of 180 ± 20 kPa (26 ± 3 psi).
11	1	2W-1635 Spring	Length under test force is 102.0 mm (4.02 inch).
			Test force is 518 ± 26 N (116 ± 6 lb).
			Free length after test is 143.4 mm (5.65 inch).

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