525B and 535B Wheel Skidders Power Train Caterpillar

Axle Housing - Disassemble

Usage:

525B 3KZ

Disassembly Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	138-7576	Link Bracket	2
B	1P-2420	Transmission Repair Stand	1
	FT-0957	Adapter Group	4
	FT-0996	Positioning Group	4
C	1P-2420	Transmission Repair Stand	1
D	138-7574	Link Bracket	3
E	4C-8500	Spanner Wrench As ⁽¹⁾	1
	120-9877	Spanner Wrench As ⁽²⁾
	6V-7820	Torque Multiplier	1
F	150-1782	Crossblock	1
	3H-0470	Screw	1
	3H-0466	Nut	1
	3H-0468	Puller Plate	2
	9U-7692	Threaded Rod	2

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^( 1 )	Used for rear axle
^( 2 )	Used for front axle

Start By:

Remove the axle from the machine. Refer to Disassembly and Assembly, "Fixed Axle (Rear) - Remove" or Disassembly and Assembly, "Oscillating Axle (Front) - Remove".

Note: Before additional repair is performed to the oscillating axle, remove the axle support. Refer to Disassembly and Assembly, "Front Axle Support - Remove".

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Illustration 1	g00975723
Fixed Axle

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Illustration 2	g01277407
Oscillating Axle

Attach Tooling (A) and a suitable lifting device to axle (3) .

Use the suitable lifting device to install axle (3) on Tooling (B) . The weight of axle (3) is approximately 1360 kg (3000 lb).

Remove bolts (2) .

Remove axle housing (1) . The weight of axle housing (1) is approximately 500 kg (1100 lb).

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Illustration 3	g00975725

Attach Tooling (A) and a suitable lifting device to the opposite end of axle housing (1) .

Use the suitable lifting device to reposition axle housing (1) on Tooling (C) .

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Illustration 4	g00975727

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Illustration 5	g00975728

Attach Tooling (D) and a suitable lifting device to planetary carrier (6) . The weight of planetary carrier (6) is approximately 80 kg (175 lb).

Expand retaining ring (4) in order to release retaining ring (4) from axle shaft (5) and use the suitable lifting device to lift planetary carrier (6) out of the axle housing.
Note: Planetary carrier (6) must be disassembled In order to remove retaining ring (4) from planetary carrier (6) .

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Illustration 6	g00975729

Use a hammer and a punch to push spring pin (8) in planetary shaft (9) .

Remove planetary shaft (9) , two thrust washers (10) , and planetary gear (11) from planetary carrier (6) .

Remove bearing (12) from planetary gear (11) .

Remove spring pin (8) from planetary shaft (9) .

Remove spring pin (7) from spring pin (8) .

Repeat Steps 9 through 13 for the removal of the other two planetary gears.

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Illustration 7	g00975732

Use Tooling (E) to remove bearing nut (13) .

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Illustration 8	g01274263

Attach Tooling (A) and a suitable lifting device to axle housing (1) . Put slight lifting tension on axle housing (1) .

Note: Bearing cone (14) which is located under bearing nut (13) will be removed at the same time as axle housing (1) .

Install Tooling (F) to axle housing (1) . Use the center stud to push the axle shaft and bearing cone (14) from axle housing (1) . Make sure that upward pressure is constantly applied.

Use the suitable lifting device to remove axle housing (1) and bearing cone (14) from the axle shaft. The weight of axle housing (1) is approximately 205 kg (450 lb).

Remove bearing cone (14) from axle housing (1) .

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Illustration 9	g01274267

Remove bearing cup (15) from axle housing (1) .

Note: Planetary ring gear (17) will be destroyed during removal.

Remove ring gear (17) from axle housing (1) . Use a torch to cut ring gear (17) in two pieces that are directly across from each other. Cut ring gear (17) at the position of locating dowels (16) . For an alternate method, make three welds that are equally spaced around the circumference of ring gear (17) . This will cause ring gear (17) to shrink.