785D OEM Off-Highway Truck Machine Systems Caterpillar

Tire and Rim (Front) - Remove and Install

Usage:

785D DMC

Removal Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A⁽¹⁾	9U-7489	Lift Stand	2
	447-0910	Electric Hydraulic Pump Gp (115 V)	1
	447-0911	Electric Hydraulic Pump Gp (230 V)	1
	4C-5749	Dolly	1
A1	OR
	504-9830	Lift Gp (50/60 Hz)⁽²⁾	2
	504-9831	Lift Gp (50/60 Hz)⁽³⁾	2
B	194-7586	Pneumatic Wrench Gp	1
	194-7886	Drive Extension	1
	4C-6723	Socket	1

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⁽¹⁾	Use Tooling (A) or (A1) based on requirements.
⁽²⁾	Operating Voltage (380V - 500V)
⁽³⁾	Operating Voltage (180V - 300V)

Start By:

Install the wheel chocks.

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Follow the recommended procedure for removal and installation of tires and or wheel assemblies.
Ensure that the machine and tire and or wheel assembly are properly supported at all times.

Improper procedures that are used to remove and install tires and or wheel assemblies can result in personal injury or death.

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Servicing and changing tires and rims can be dangerous. This work must be done only by trained personnel with correct tools and procedures. If correct procedures are not followed while servicing tires and rims, the assemblies can burst with explosive force and cause serious physical injury or death. Follow carefully the specification information provided by your tire servicing person or dealer.

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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 1	g00500940
For Tooling (A)

Use Tooling (A) to raise the front chassis until the weight of the truck is off the front tires and rims.
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Illustration 2 g06384714

Typical example
For Tooling (A1)
Use Tooling (A1) to raise the front chassis until the weight of the truck is off the front tires and rims. Refer to Tool Operating Manual, NEHS1334, "Lift Stands (150 Ton)" for more information on Tooling (A1).
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Illustration 3 g00500943

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Illustration 4 g00713802
Use Tooling (B) to remove nuts (2). Do not remove three flange nuts (3).
Use a suitable tire handler to support tire and rim (1). The weight of tire and rim (1) is approximately 3007 kg (6630 lb). Use Tooling (B) to remove three flange nuts (3).
Remove tire and rim (1).

Installation Procedure

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Table 2
Required Tools
Tool	Part Number	Part Description	Qty
A⁽¹⁾	9U-7489	Lift Stand	2
	447-0910	Electric Hydraulic Pump Gp (115 V)	1
	447-0911	Electric Hydraulic Pump Gp (230 V)	1
	4C-5749	Dolly	1
A1	OR
	504-9830	Lift Gp (50/60 Hz)⁽²⁾	2
	504-9831	Lift Gp (50/60 Hz)⁽³⁾	2
B	194-7586	Pneumatic Wrench Gp	1
	194-7886	Drive Extension	1
	4C-6723	Socket	1

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⁽¹⁾	Use Tooling (A) or (A1) based on requirements.
⁽²⁾	Operating Voltage (380V - 500V)
⁽³⁾	Operating Voltage (180V - 300V)

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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 5	g00500943

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Illustration 6	g00713802

Use a suitable tire handler to position tire and rim (1). The weight of tire and rim (1) is approximately 3007 kg (6630 lb).
Note: Ensure that the valve stem is facing outward.
Use Tooling (B) to install three flange nuts (3). Tighten flange nuts (3) to a torque of 1150 ± 150 N·m (849 ± 111 lb ft).
Use Tooling (B) to install nuts (2). Tighten nuts (2) to a torque of 1150 ± 150 N·m (849 ± 111 lb ft).
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Illustration 7 g00500940

For Tooling (A)
Lower Tooling (A) until the weight of the machine is on the front tires and rims. Remove Tooling (A).
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Illustration 8 g06384714

Typical example
For Tooling (A1)
Lower Tooling (A1) until the weight of the machine is on the front tires and rims. Remove Tooling (A1). Refer to Tool Operating Manual, NEHS1334, "Lift Stands (150 Ton)" for more information on Tooling (A1).