559D and 579D Knuckleboom Loader Machine Systems Caterpillar

Swing Motor and Swing Drive - Remove and Install

Usage:

559D KL5

Removal Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	439-3940	Bracket As	2

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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, NENG2500, "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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Personal injury can result from hydraulic oil pressure and hot oil.
Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.

Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

Release the system pressure. Refer to Operation and Maintenance Manual, "System Pressure - Release" for the correct procedure.
Drain the coolant. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change" for the correct draining and filling procedures.
Drain the hydraulic oil. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change" for the correct draining and filling procedures.
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Illustration 1 g06290557
Remove bolts (1) and cover (2).
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Cut cable strap (3) and position the harness assembly out of the way.
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Illustration 3 g06290563
Attach Tooling (A) and a suitable lifting device to box assembly (5). The weight of box assembly (5) is approximately 30 kg (66 lb).
Remove six bolts (4) and box assembly (5).
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Illustration 4 g06290573
Disconnect hose assemblies (6) and harness assembly (7).
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Illustration 5 g06290577
Disconnect harness assembly (8).
Remove nut (9) and position the harness assembly out of the way.
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Remove bolt (10) and disconnect hose assemblies (11).
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Illustration 7 g06290587
Remove bolts (13) and hand rails (12).
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Illustration 8 g06295674
Remove bolts (14) and platform assembly (15).
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Illustration 9 g06295678
Disconnect harness assembly (16).
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Illustration 10 g06295681
Remove bolt (17) and position hose assembly (18) out of the way.
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Illustration 11 g06295684
Attach Tooling (A) and a suitable lifting device to platform assembly (20). The weight of platform assembly (20) is approximately 54 kg (120 lb).
Remove four bolts (19) and platform assembly (20).
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Illustration 12 g06295687
Disconnect hose assemblies (21) and (22).
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Illustration 13 g06295689
Disconnect hose assemblies (23) and (24).
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Illustration 14 g06295693

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Illustration 15 g06295696

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Illustration 16 g06295698
Remove bolts (25).
Attach Tooling (A) and a suitable lifting device to swing motor and swing drive (26). The weight of swing motor and swing drive (26) is approximately 240 kg (530 lb).
Use two bolts (27) to remove swing motor and swing drive (26).

Installation Procedure

Install swing motor and swing drive (26) in the reverse order of removal.
1. If bolts (27) are M20, tighten bolts (27) to a torque of 520 ± 70 N·m (384 ± 52 lb ft).
2. If bolts (27) are M24, tighten bolts (27) to a torque of 900 ± 100 N·m (664 ± 74 lb ft).