C18 Generator Set Engines Caterpillar

Fuel Priming Pump - Remove and Install

Usage:

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Table 1
Specification for 360-1693 Fuel Priming Pump and Primary Filter Gp
Item	Qty	Part	Specification Description
1	1	9S-8002 O-Ring Plug	Torque to 11 ± 2 N·m (97 ± 18 lb in).
2	2	179-7267 Plug	Torque to 95 ± 10 N·m (70 ± 7 lb ft).
3	1	211-2093 Nut	Torque to 6.5 ± 0.5 N·m (57.5 ± 4.4 lb in).
4	1	300-3556 Solenoid Valve Gp	Torque to 28 ± 3 N·m (248 ± 27 lb in). Operating voltage is 24 VDC. Coil resistance at 25 ± 5 °C (77 ± 9 °F) is 31.1 ± 2.4 ohms.
5	1	328-8351 Fitting	Torque to 13.5 ± 0.5 N·m (119.5 ± 4.4 lb in).
6	1	327-8044 -Check Valve Gp	Torque to 28 ± 3 N·m (248 ± 27 lb in).
7	1	212-9580 Water Separator and Fuel Filter Gp	Tighten water separator and fuel filter group until properly seats in to fuel priming pump group. Add 3/4 an additional turn.
8	1	343-5527 Bowl	Torque to 10 N·m (89 lb in).
9	1	9S-4167 Hollow Stud	Apply red Loctite 271 for a length of (C) as shown in Illustration 1 Torque to 70 ± 15 N·m (52 ± 11 lb ft).

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NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat^® products. Dispose of all fluids according to local regulations and mandates.

Turn the fuel supply to the OFF⁽¹⁾ position and turn the power disconnect switch to the OFF.
Disconnect the fuel line (not shown) to the ARD manifold from both ends.
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Illustration 2 g06007683
Disconnect all harness assemblies from fuel priming pump (4).
Disconnect hose assembly (2) and hose assembly (1).
Remove bolts (3) and fuel priming pump assembly (4).
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Illustration 3 g06008060
Remove bolts (6) and manifold (5).
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Illustration 4 g06008212
Remove locknuts (7) and harness assembly (8) from the terminal studs.
Note: Write down the polarity. The polarity is designated by “+” and “-” signs around the terminal studs.
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Illustration 5 g06008260
Remove seal (9) and pump assembly (10).
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Illustration 6 g06008301
Remove backup rings (11), seal (12), and seal (13).

Install fuel priming pump (4) in the reverse order of removal.
1. Tighten locknuts (7) to a torque of 6 ± 1 N·m (53 ± 9 lb in).
2. Use two people to flush the fuel pump and the fuel line into a suitable container for disposal. The fuel pump can be activated by turning on the key or pressing the manual switch. The manual switch, if available, is on the primary fuel filter base.