2000/01/10 Caterpillar

New Maintenance Interval Schedule and Procedure for Checking the Oil Level in the Midwheel Hub {4180, 7526}

Usage:

70C 2YL

Agricultural Tractor: Challenger 75 (PIN: 4CJ) Challenger 65C (PIN: 2ZJ1-1964) Challenger 70C (PIN: 2YL) Challenger 75C (PIN: 4KK) Challenger 85C (PIN: 9TK) Challenger 65D (PIN: 2ZJ1965-UP) Challenger 75D (PIN: 5AR) Challenger 85D (PIN: 4GR) Challenger 65E (PIN: 6GS) Challenger 75E (PIN: 6HS) Challenger 85E (PIN: 6JS) Challenger 95E (PIN: 6KS)

Description of Change: The recommended Maintenance Interval Schedule for checking the oil level in the midwheel hub is now "Every 1000 Service Hours".

Adaptable To: The updated Maintenance interval schedule and the maintenance procedure is adaptable to the following Agricultural Tractors:

Challenger 75 (PIN: 4CJ1-UP)
Challenger 65C (PIN: 2ZJ1-1964)
Challenger 70C (PIN: 2YL1-UP)
Challenger 75C (PIN: 4KK1-UP)
Challenger 85C (PIN: 9TK1-UP)
Challenger 65D (PIN: 2ZJ1965-UP)
Challenger 75D (PIN: 5AR1-UP)
Challenger 85D (PIN: 4GR1-UP)
Challenger 65E (PIN: 6GS1-UP)
Challenger 75E (PIN: 6HS1-UP)
Challenger 85E (PIN: 6JS1-UP)
Challenger 95E (PIN: 6KS1-UP)

The recommended Maintenance Interval Schedule was added to Operation and Maintenance Manual, SEBU7072, November 1999. The recommended Maintenance Interval Schedule should be added to the following publications:

Operation and Maintenance Manual, SEBU6335, May 1992
Operation and Maintenance Manual, SEBU6575, November 1995
Operation and Maintenance Manual, SEBU7034, August 1996

See the following information for the current maintenance procedure to check the oil level in the midwheel hub.

Midwheel Hub Oil Level - Check

SMCS Code: 4180-535-FLV

Note: Inspect the oil level frequently if you operate the machine in extremely wet conditions or extremely muddy conditions.

Park the machine on a hard, level surface. Place chocks at the front of the belts and at the rear of the belts.

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Illustration 1	g00633890

Deflate the air from spring (1) through valve assembly (2) .

Rotate the midroller so that oil level/fill plug (3) is located at the 2 o'clock position.

Clean the area around oil level/fill plug (3). Then remove oil level/fill plug (3) .

Maintain the oil level to the bottom of the threads of the hole for oil level/fill plug (3). If the oil level is low, add oil. See Operation and Maintenance Manual, "Refill Capacities" for additional information.

Install oil level/fill plug (3) .

Repeat the procedure on the other midwheels. Make sure that you check the midwheels on the inner side of the undercarriages and outer side of the undercarriages.

Inflate the spring with air through valve assembly (2). See Operation and Maintenance Manual, "Air Spring Pressure" for the correct inflation pressure.