345B, 345B Series II and W345B Series II Excavators Machine Systems Caterpillar

Sprocket - Remove and Install

Usage:

345B 2NW

Removal Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	4C-6486	Stand	2
	8S-7611	Tube	2
	8S-7615	Pin	2
B	132-8223	Hydraulic Pump and Motor Gp	1
	1U-6221	Hydraulic Torque Wrench Gp	1
	132-8154	Wrench Link	1

Start By:

Separate the track assembly. Refer to Disassembly and Assembly, "Track - Separate".

Note: The procedure to remove the right hand final drive sprocket and the procedure to remove the left hand sprocket is identical. The procedure that follows is for one of the sprockets.

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Illustration 1	g00594968

Note: Adjust the height of Tooling (A) so that there is sufficient clearance between the sprocket and the track links for the removal of the sprocket from the final drive.

Lift the side of the machine in order to install Tooling (A) under the frame, as shown.

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Illustration 2	g00595219

Use Tooling (B) to remove bolts (1) and the washers that fasten the sprocket to the final drive.

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Illustration 3	g00595234

Remove cork plugs (2). Use two M24x3.0mm forcing screws to separate the sprocket from the final drive.

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Illustration 4	g00595254

Attach a suitable lifting device to sprocket (3), as shown. Remove sprocket (3). The weight of sprocket (3) is approximately 75 kg (165 lb).

Installation Procedure

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Table 2
Required Tools
Tool	Part Number	Part Description	Qty
A	4C-6486	Stand	2
	8S-7611	Tube	2
	8S-7615	Pin	2
B	132-8223	Hydraulic Pump and Motor Gp	1
	1U-6221	Hydraulic Torque Wrench Gp	1
	132-8154	Wrench Link	1
C	9S-3263	Thread Lock Compound

Note: The procedure to install the right hand sprocket and the procedure to install the left hand sprocket is identical. The procedure that follows is for one of the sprockets.

Thoroughly clean the mating surfaces of the sprocket and the final drive.

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Illustration 5	g00595254

Attach a suitable lifting device to sprocket (3). The weight of sprocket (3) is approximately 75 kg (165 lb). Position sprocket (3) on the final drive, as shown.

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Illustration 6	g00595234

Install cork plugs (2) .

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Illustration 7	g00595219

Apply Tooling (C) to bolts (1). Install bolts (1). Use Tooling (B) to tighten bolts (1) in a crisscross sequence to a torque of 900 ± 100 N·m (660 ± 75 lb ft).