Installing the 443-0881 Precleaner Gp On Certain D7E Track-Type Tractors{1055} Caterpillar

Track-Type Tractor:

D7E (S/N: TJA1-UP; TAN1-UP)

Introduction

This Special Instruction provides the procedure for reworking the pre-cleaner on certain D7E Track-Type Tractors.

Safety

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Do not attempt to disassemble or assemble this machine until you read and understand the disassembly and assembly instructions. Improper disassembly and assembly procedures could result in injury or death.

Required Parts

Installation Procedure for Machines Equipped with 382-9089 Precleaner Gp , 382-9090 Precleaner Gp , 335-3481 Precleaner Ar , and 335-3482 Precleaner Ar

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Illustration 1	g03738384

1. loosen clamp (A) and remove 335-3504 Precleaner As (B) .

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Illustration 2	g03738484

2. The air cleaner and plenum can be removed as a unit to allow for the base assembly to be removed from the hood. Remove four bolts (C) that hold the air cleaner housing to the support bracket. Remove the air cleaner.

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Illustration 3	g03738517

3. Remove 335-3473 Base As (D) and 335-3479 Hose (E). The dust ejector scavenge line that attaches to the base assembly will need to be disconnected. The mounting bolts and lower clamp will be reused with the new precleaner installation.

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Illustration 4	g03738659

4. The hood will need to be modified to allow for tube assembly (2) to be bolted to the hood between the hood precleaner tube and exhaust stack.

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Illustration 5	g03738934
(F) 62.5 mm (2.46 inch) (G) 45 mm (1.77 inch) (H) Hood center line (J) 13.5 mm (0.53 inch) hole (K) 50.8 mm (2.00 inch) hole (L) 45 mm (1.77 inch) (M) 45 mm (1.77 inch)

5. Use the dimensions in Illustration 16 to modify the hood for tube assembly (2) .

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Illustration 6	g03875774

6. Install tube assembly (2) using two bolts (3), four washers (4), and two nuts (5). The bent portion of the tube runs towards the left-hand side of the machine. Tube assembly (2) will need to be painted black.

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Illustration 7	g03739129

7. Reconnect the dust ejector scavenge line. Torque the clamp (N) to 7.5 N·m (66 lb in).

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Illustration 8	g03739148

8. Install base assembly (1) reusing the existing hardware. Torque the bolts to 55 N·m (40 lb ft).

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Illustration 9	g03739167

9. Reinstall the air cleaner and plenum using existing bolts (C) .

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Illustration 10	g03739179

10. Position 9L-3628 Reducer Hose (P). Torque both clamps (Q) to 11 N·m (97 lb in).

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Illustration 11	g03876709

11. Install precleaner assembly (6). Torque precleaner clamp (R) to 47 N·m (35 lb ft). Torque scavenge line clamp (S) to 4.5 N·m (40 lb in).

Installation Procedure for Machines Equipped with 382-9080 Precleaner Gp and 327-5205 Air Cleaner Gp

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Illustration 12	g03740430

1. loosen clamp (A) and remove 335-3474 Precleaner As (B) .

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Illustration 13	g03738484

2. The air cleaner and plenum can be removed as a unit to allow for the base assembly to be removed from the hood. Remove four bolts (C) that hold the air cleaner housing to the support bracket. Remove the air cleaner.

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Illustration 14	g03738517

3. Remove 335-3473 Base As (D) and 335-3479 Hose (E). The dust ejector scavenge line that attaches to the base assembly will need to be disconnected. The mounting bolts and lower clamp will be reused with the new precleaner installation.

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Illustration 15	g03738659

4. The hood will need to be modified to allow for tube assembly (2) to be bolted to the hood between the hood precleaner tube and exhaust stack.

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Illustration 16	g03738934
(F) 62.5 mm (2.46 inch) (G) 45 mm (1.77 inch) (H) Hood center line (J) 13.5 mm (0.53 inch) hole (K) 50.8 mm (2.00 inch) hole (L) 45 mm (1.77 inch) (M) 45 mm (1.77 inch)

5. Use the dimensions in Illustration 16 to modify the hood for tube assembly (2) .

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Illustration 17	g03875811

6. Install tube assembly (2) using two bolts (3), four washers (4), and two nuts (5). The bent portion of the tube runs towards the left-hand side of the machine. Tube assembly (2) will need to be painted black.

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Illustration 18	g03876711

7. Preassemble the following parts and install.
   • Clamps (7)

   • Hose (8)

   • Spacer (9)

   • Washer (10)

   • Bolt (11)

   • Check Valve (12)

8. Reconnect the dust ejector scavenge line. Torque the clamp (N) to 7.5 N·m (66 lb in).

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Illustration 19	g03739148

9. Install base assembly (1) reusing the existing hardware. Torque the bolts to 55 N·m (40 lb ft).

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Illustration 20	g03739167

10. Reinstall the air cleaner and plenum using existing bolts (C) .

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Illustration 21	g03739179

11. Position 9L-3628 Reducer Hose (P). Torque both clamps (Q) to 11 N·m (97 lb in).

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Illustration 22	g03739870

12. Install precleaner assembly (3). Torque precleaner clamp (R) to 47 N·m (35 lb ft). Torque scavenge line clamp (S) to 4.5 N·m (40 lb in).