826G Series II Landfill Compactor, 825G Series II Soil Compactor and 824G Series II Wheel Tractor Machine Systems Caterpillar

Front Frame from Rear Frame - Separate

Usage:

Separation Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	504-9826	Lift Gp (50/60 Hz)⁽¹⁾	6
	OR
	504-9827	Lift Gp (50/60 Hz)⁽²⁾	6
D	8S-7615	Pin	1
	350-7768	Electric Hydraulic Pump	1
	396-9840	Cylinder	1
	8S-7610	Base Assembly	1
E	350-7768	Electric Hydraulic Pump	1
	4C-9634	Puller Stud	1
	1P-1837	Puller Adapter	1
	6V-3175	Hydraulic Puller	1
	6V-4035	Sleeve	1
	7H-7539	Full Nut	1
F	350-7768	Electric Hydraulic Pump	1
	4C-9634	Puller Stud	1
	6V-3175	Hydraulic Puller	1
	7H-7539	Full Nut	1
	5P-7399	Bearing Pulling Adapter	1
	8M-4858	Adapter	1
	1M-6756	Sleeve	1
	7F-5283	Head	1

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⁽¹⁾	High-Voltage (380-500V)
⁽²⁾	Low-Voltage (180-300V)

Start By:

Remove the cab.
Remove the center drive shaft.

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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. Refer to Special Publication, PERJ1017, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat^® products. Dispose of all fluids according to local regulations and mandates.

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At operating temperature the implement hydraulic oil tank is hot and under pressure. Hot oil can cause burns.

To prevent possible injury, release the pressure in the implement hydraulic system before hydraulic lines or components are disconnected or removed.

Note: Put identification marks on all lines, on all hoses, on all wires and on all tubes for installation purposes. Plug all lines, all hoses, and all tubes. This will help to prevent fluid loss and keeps contaminants from entering the system.

Drain the oil from the hydraulic tank into a suitable container. The capacity of the hydraulic tank is 88 L (23.2 US gal).
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Illustration 1 g00683293

Typical Example
Place chocks in front of the rear tires and behind the rear wheels, as shown.
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Illustration 2 g06356772

Typical example
Install Tooling (A) under the rear part of the front frame on each side, as shown. Refer to Tool Operating Manual, NEHS1328, "Lift Group (Stand - 60 Ton)" for more information on Tooling (A).
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Illustration 3 g06359498

Typical example
Install Tooling (A) under the front part of the rear frame on each side, as shown.
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Illustration 4 g06358266

Typical example
Install Tooling (A) on the rear part of the rear frame, as shown.
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Illustration 5 g00749043

Typical Example
Remove bolt (1), the washer, and the spacer. Remove steering cylinder pin (2). Repeat this procedure for the opposite side of the machine.
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Illustration 6 g00885448

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Illustration 7 g00885449
Disconnect hoses (3) in order for the separation of the frames.
Disconnect the electrical connectors. Move the electrical connectors toward the rear frame.
Turn the valve handles to close fuel lines.
Remove two fuel lines.
Attach a suitable hoist and lifting chains to the front frame.
Note: The hoist must be capable of lifting 20,000 lb.
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Illustration 8 g00749058

Typical Example
Place the forks of a suitable lift truck under the blade, as shown. Use suitable chains to secure the blade to the lift truck, as shown.
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Illustration 9 g00885464
Remove bolt (4) and the washers from the upper hitch. Remove upper pin (5).
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Illustration 10 g00885511
Remove bolts (8), bolts (11), plate (10), and shims (9) from the lower pin (6) and the front frame.
Use Tooling (D) to remove lower pin (6).
Remove spacer (7) from the lower section of the front frame.
Separate the steering frame lock.
Be sure that Tooling (B) and Tooling (C) are moved with the front frame.
Slowly pull the front frame away from the rear frame. Continue to move Tooling (B), Tooling (C), the hoist, and the lifting chains. Pull the two frames until the frames are separated by approximately 610 mm (24 inch).
Chock the front wheels and lower the front frame onto Tooling (B). The bearings and the seals can be serviced now.
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Illustration 11 g00885528
Use Tooling (D) to remove upper sleeve bearing (12) from the upper portion of the rear frame, as shown.
Fasten a lifting strap and a hoist to Tooling (D). Use Tooling (E) to remove lower bearing sleeve (17) from the upper portion of the rear frame.
Remove bolts (13) and lower cap (16). Remove upper cap (14) and shims (15).
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Illustration 12 g00885555

Typical Example
Use Tooling (E) to remove the bearing cups and the bearing cones from the upper hitch.
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Illustration 13 g03359011
Remove spacer (21A), bolts (18), upper cap (19), shims (20), and lower cap (21) from the lower hitch assembly of the front frame.
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Illustration 14 g00433589

Typical Example
Use Tooling (F) to remove the bearing cup and bearing cones from the lower hitch.
Remove lip seals from the upper cap and from the lower cap of the lower hitch assembly.
Remove lip seals from the upper cap and from the lower cap of the upper hitch assembly.