Skytrak 6042 Service Manual User Manual download pdf (Page 42)

General Information and Specifications

2.28

Model 6042 Legacy Origin 7/02

2.8 REPLACEMENT

ALWAYS use the correct tool when removing or replacing

any part or performing any service.

Some procedures may require the use of specialized

tools. If needed, many of these tools can be obtained

through Snap-on

tool distributors.

Contact:

Snap-on Incorporated

P.O. Box 1410

Kenosha, WI 53141-1410 USA

Phone: (262)-656-5200

Internet: http://www.snapon.com

Snap-on

is a registered trademark of Snap-on

Technologies, Inc.

Replace o-rings, seals and gaskets whenever they are

disturbed. NEVER mix new and old seals or o-rings,

regardless of apparent visual condition. ALWAYS

lubricate new seals and o-rings with hydraulic oil before

installation.

2.9 HOSES AND TUBES

2.9.1 Hose and Tube Inspection

1. Damaged, dented, crushed, or leaking hose and

tube fittings restrict oil flow and the operation of the

system being served. Fittings showing signs of

movement from their original positions have failed

and must be replaced. ALWAYS replace the entire

hose or tube assembly if the fittings are damaged.

2. Hoses must remain in good condition. Obvious signs

of external hose wear, or hydraulic fluid leaking or

weeping indicate the need to replace the hose

assembly. If in doubt, replace the hose.

3. Replace if any of the following conditions exist:

• Ballooning (replace hose immediately!)

• Kinking, crushing, stretching or deforming

• Concealed corrosion of wire reinforcement

• Chafed outer cover

2.9.2 Hose and Tube Installation

1. When installing a new hose, loosely connect each

end, and verify that the hose takes up the designed

position, and is free of twists and unnecessary

bends before tightening the connection completely.

Tighten any support clamps sufficiently in order to

hold the hose without crushing it, preventing

movement and chafing of the hose.

2. If a hose is replaced on a part that moves, move the

part through its entire range of motion to verify that

the hose will not make contact with any component.

Adjust the hose as necessary.

3. When installing any hose, be sure that the hose

does not become kinked or twisted.

4. NEVER allow free-moving or unsupported hoses to

contact each other or any other component. Such

contact causes chafing and reduces hose life.

2.10 BEARINGS

2.10.1 Bearing Removal

1. NEVER remove bearings unless absolutely

necessary! ALWAYS use the recommended size

and type of bearing puller to reduce the risk of

damage to the bearing or related components.

2. When bearings or bushings are removed, verify that

the bearing or bushing is free of discoloration, nicks,

scuffing, or signs of overheating. If in doubt, replace

the bearing or bushing.

2.10.2 Bearing Cleaning

ALWAYS wear safety glasses. Clean bearings that are

acceptable for service in a suitable solvent. NEVER spin-dry

a bearing with compressed air; this can cause metal-to-

metal contact and damage the bearing. Compressed air

can also cause a bearing to come apart. After cleaning a

bearing, immerse the bearing in clean lubricating oil until

needed.

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