C7.1 Industrial Engine Caterpillar

Accessory Drive - Remove and Install - Accessory Drive SAE "A"

Usage:

C7.1 770

Removal Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	8H-0663	Bearing Puller	1
	5F-7345	Puller	1
	126-7183	Crossblock	1
	126-7177	Puller Leg	2

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

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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. Dispose of all fluids according to local regulations and mandates.

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Illustration 1	g02186413

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Illustration 2	g02186414

If necessary, remove Original Equipment Manufactures (OEM) driven equipment from auxiliary drive (5). Refer to the OEM for the correct procedure.
If the OEM driven equipment was not installed onto auxiliary drive (5). Remove cover plate (2) and remove O-ring seal (3) (not shown).
Remove allen head screws (4) and allen head screw (6) from accessory drive housing (5).
Remove accessory drive housing (5) from the front housing.
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Illustration 3 g02183295
Remove gasket (7) from accessory drive housing (5).
If necessary, follow Step 6.a through Step 6.d in order to disassemble the accessory drive.
1. Remove circlip (11) from accessory drive housing (5).
2. Place accessory drive housing (5) onto a suitable support. Press the assembly of gear (9), bearing (10) and bearing (8) out of accessory drive housing (5).
3. Use Tooling (A) in order to remove bearing (10) from gear (9).
4. Use Tooling (A) in order to remove bearing (8) from gear (9).

Installation Procedure

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Table 2
Required Tools
Tool	Part Number	Part Description	Qty
B	7M-7456	Bearing Mount Compound	1
C	5P-3975	Rubber Lubricant	1

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

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Illustration 4	g02183296

If necessary, follow Step 1.a through Step 1.e in order to assemble the accessory drive.
1. Inspect the condition of the teeth and the splines of gear (9) for wear and damage. Inspect bearing (10), bearing (8), and circlip (11). Inspect accessory drive housing (5) for wear and damage. Replace any components that are worn or damaged.
2. Apply a small continuous bead of Tooling (B) to inner Surface (X) of bearing (8). Place the inner race of bearing (8) onto a suitable support. Press the shaft of gear (9) into bearing (8) until the shoulder of the gear is against the bearing. Remove any excess compound.
3. Apply a small continuous bead of Tooling (B) to inner Surface (Z) of bearing (10). Place the inner race of bearing (10) onto a suitable support. Press the shaft of gear (9) into bearing (10) until the shoulder of the gear is against the bearing. Remove any excess compound.
4. Apply a small continuous bead of Tooling (B) to the outer Surface (W) and the outer Surface (Y) of bearing (8) and bearing (10). Place accessory drive housing (5) on a suitable support. Press the assembly of gear (9) into the accessory drive housing. Ensure that bearing (10) and bearing (8) are against the front face of the recesses in accessory drive housing (5). Remove any excess compound.
5. Install circlip (11) into the groove in accessory drive housing (5). Ensure that circlip (11) is correctly positioned in the groove.
Inspect the bore in the front housing for damage. If necessary, replace the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Remove" and Disassembly and Assembly, "Housing (Front) - Install" for the correct procedure.
Position a new gasket (7) to accessory drive housing (5).
Lightly lubricate bearing (10), bearing (8), and gear (9) with clean engine lubricating oil. Install the assembly of the accessory drive to the front housing. Ensure that the flange on the accessory drive housing is flush with the front housing.
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Illustration 5 g02186414
Install new M8 allen head screws (4) to accessory drive housing (5).
Install new M12 allen head screw (6) to accessory drive housing (5).
Tighten M8 allen head screws to a torque of 22 N·m (195 lb in).
Tighten M12 allen head screw to a torque of 78 N·m (58 lb ft).
Repeat Step 7 to ensure correct torque of M8 allen head screws (4).
Ensure that there is tactile backlash between the idler gear and the accessory drive gear.
If necessary, install the OEM driven equipment to auxiliary drive (5). Refer to the OEM for the correct procedure.
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Illustration 6 g02186413
If the OEM driven equipment is not being installed to the auxiliary drive. Use Tooling (C) in order to lubricate a new O-ring seal (3). Install O-ring seal (3) (not shown) to cover plate (2) install the cover assembly to the auxiliary drive and install bolts (1).
Tighten bolts (1) to a torque of 16 N·m (142 lb in).