793C Off-Highway Truck Machine Systems Caterpillar

Tire and Rim (Front) - Remove

Usage:

793C 4GZ

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)

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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.

Note: The following procedure shows the front tire and rim on the right side.

Note: Refer to the Operation and Maintenance Manual for the correct tire handling recommendations and tire inflation procedures.

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Illustration 1	g00410923
For Tooling (A)

Use Tooling (A) to lift 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 lift 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 g00713822
Use Tooling (B) to remove 68 nuts (1) and the 68 washers. Leave two nuts attached. The two nuts should be separated by 180 degrees. This will keep the tire and the rim on the machine until the tire handler is positioned to support the tire and rim.
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Illustration 4 g00410926
Use a tire handler to support the tire and rim. The tire and the rim weigh approximately 5,159 kg (11,373 lb).
Remove remaining two nuts (1) and the two washers that hold the tire and rim. Remove the tire and rim.
Repeat Steps 1 through 5 for the front tire and rim on the opposite side.