Installation Procedure of the 440-4285 Screen As on Certain C175 Off-Highway Truck Engines{1151, 1162, 1206} Caterpillar

Off-Highway Truck:

793F Series AC (S/N: EMD1-UP)

793F (S/N: SND1-UP; SSP1-UP; RBT1-UP)

795F Series AC (S/N: ERM1-UP)

797B (S/N: JSM1-UP)

797F (S/N: LAJ1-UP; WSP1-UP)

Introduction

Use this procedure to support the rear of the high-pressure fuel pump (HPFP) on C175 Off-Highway Truck Engines in order to install the 440-4285 Screen As . This procedure is not to be used in order to remove or install the HPFP. Do not perform any of this procedure until you have read and understand the procedure.

Required Parts

The unistrut and trolley are available from McMaster-Carr or use equivalent. Refer to McMaster-Carr website addresses below:

Bracket Fabrication

Illustration 1	g03440141
Brackets (A) 38 mm (1.50 inch) (B) 6.3 mm (0.25 inch) (C) 22 mm (0.87 inch) (D) 50 mm (2 inch) (E) 12 mm (0.47 inch) (F) 135 degrees (G) 12 mm (0.47 inch) (H) 25 mm (0.98 inch) (I) 105 mm (4.1 inch)

Fabricate two brackets, refer to Illustration 1.

ASTM A36

SAE Grades 1008 through 1025

Installation Procedure

1. Remove the air inlet manifold from cylinders one, three, and five. Refer to Disassembly and Assembly, "Air Inlet Manifold - Remove and Install".

2. Remove any fuel lines and connectors attached to the fuel pump. Refer to Disassembly and Assembly, "Fuel Pump (High Pressure) - Remove and Install".

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Illustration 2	g03440477
(1) Brackets (2) 6V-4248 Bolts

3. Install two brackets (1) onto the engine. Attach the brackets to the cylinder heads using two bolts (2) .

   Note: Do not use the brackets as a step.

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Illustration 3	g03440544
(1) Brackets (2) 6V-4248 Bolts (3) Unistrut (5) 6V-5839 Washers (6) 344-5675 Nuts

4. Attach unistrut (3) to one bracket (1) using one bolt (2), two washers (5) and one nut (6) .

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Illustration 4	g03440551
(3) Unistrut (7) Trolley (8) Strap

5. Install trolley (7) onto unistrut (3) .

6. Attach unistrut (3) to the remaining bracket using one bolt (2), two washers (5) and one nut (6) .

7. Place strap (8) around the HPFP mono block and attach both ends to trolley (7) .

8. Tighten strap (8) to support the rear of the HPFP.

   Note: Do not over tighten the strap.

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Illustration 5	g03440916
(9) 8T-7013 Bolts

9. Remove the two bottom bolts that attach the fuel pump to the drive adapter. Install bolts (9) in place of the previously removed bolts.

10. Remove the remaining bolts that attach the fuel pump to the drive adapter.

11. Adjust strap (7) in order for the HPFP to remain level.

12. Slide the fuel pump to the rear of the engine.

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Illustration 6	g03441378
(10) 440-4285 Screen As

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Illustration 7	g03441397
440-4285 Screen As installed (10) 440-4285 Screen As

13. Install screen assembly (10) into the HPFP drive adapter.

14. Slide the HPFP back into the drive adapter and install the HPFP. Refer to Disassembly and Assembly, "Fuel Pump (High Pressure) - Remove and Install".

15. Install any previously removed fuel lines and electrical connectors. Refer to Disassembly and Assembly, "Fuel Pump (High Pressure) - Remove and Install".

16. Install the air inlet manifolds for cylinders one, three, and five. Refer to Disassembly and Assembly, "Air Inlet Manifold - Remove and Install".