PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING THE SPINDLE BOLT TORQUE ON CERTAIN 615C-II WHEEL TRACTOR-SCRAPERS Caterpillar

PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING THE SPINDLE BOLT TORQUE ON CERTAIN 615C-II WHEEL TRACTOR-SCRAPERS

Usage:

REBE2444-00

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20Sep2007

U-468

D-374

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*Priority*	PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING THE SPINDLE BOLT TORQUE ON CERTAIN 615C-II WHEEL TRACTOR-SCRAPERS
3260 4208		PI31353

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NOTE:

This Program must be administered as soon as possible. When reporting the repair, use "PI31353" as the Part Number and "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. Exception: If the repair is done after failure, use "PI31353" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

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NOTE:

The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.

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COMPLETION DATE	TERMINATION DATE
31Mar2008	30Sep2008

PROBLEM

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The rear wheel spindle bolt torque needs to be inspected on certain 615C-II Wheel Tractor-Scrapers. The existing bolts may have insufficient torque which can result in the spindle/receiver bolted joint loosening.

AFFECTED PRODUCT

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Model	Identification Number
615C II	9XG01888-01892, 1896-1897, 1899-1904, 1908, 1911-1914, 1916-1954, 1956, 1961-1965, 1967-1968, 1970, 1973-1977, 1979-1980, 1982-1992, 1994-1996, 1998-2000, 2002-2006, 2008, 2010-2015, 2017-2023, 2025, 2027-2028, 2031-2041, 2043-2048, 2050-2055, 2057-2071, 2073-2076, 2078-2080, 2082-2083, 2086-2103

PARTS NEEDED

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Qty	Part Number	Description
32	1D4610	BOLT

ACTION REQUIRED

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Check the torque on the rear spindle bolts and tighten or replace as per the Rework Procedure.

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OWNER NOTIFICATION

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U.S. and Canadian owners will receive the attached Owner Notification.

SERVICE CLAIM ALLOWANCES

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Caterpillar		Dealer Suggested		Customer Suggested
Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
100%	100%	0%	0%	0%	0%

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NOTE: This is a 6.0-hour job

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PARTS DISPOSITION

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Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.

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COPY OF OWNER NOTIFICATION FOR U.S. AND CANADIAN OWNERS

XYZ Corporation
3240 Arrow Drive
Anywhere, YZ 99999

PRIORITY - PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING THE SPINDLE BOLT TORQUE ON CERTAIN 615C-II WHEEL TRACTOR-SCRAPERS

MODELS INVOLVED - 615C-II Wheel Tractor-Scrapers

Dear Caterpillar Product Owner:

The rear spindle bolt torque needs to be inspected on the products listed below. The existing bolts can loosen and cause the spindle to separate from the receiver. You will not be charged for the service performed.

Contact your local Caterpillar dealer immediately to schedule this service. The dealer will advise you of the time required to complete this service.

Please refer the dealer to their Service Letter dated 20Sep2007 when scheduling this service.

We regret the inconvenience this may cause you, but urge you to have this service performed as soon as possible to prevent unscheduled downtime.

Caterpillar Inc.

Identification #(s)

Attached to 20Sep2007 Service Letter

Rework Procedure

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Refer to the Service Manual as required.

Remove the rear tires and rims to gain access to the spindle bolts. Check the torque of the 1D-4610 Bolts using a 350 Nm torque wrench.

If the bolts turn before reaching 350 Nm, they have not been tightened to the proper torque. These bolts may be reused. Using an alternating sequence, tighten the bolts to a torque of 300 +/- 50 Nm. Then turn the bolts an additional 120 +/- 5 Degrees.

If the bolts do not turn at 350 Nm, they may or may not have been tightened properly. Check them again using a 575 Nm torque wrench. If the bolts still do not turn before reaching 575 Nm, no further action is required. If the bolts do turn before reaching 575 Nm, replace them with new 1D-4610 Bolts. Using an alternating sequence, tighten the bolts to a torque of 300 +/- 50 Nm. Then turn the bolts an additional 120 +/- 5 Degrees.

Reinstall the rear tires and rims. Tighten the lug nuts to a preliminary torque of 140 +/- 20 Nm (105 +/- 15 lb ft). Tighten the lug nuts again to a final torque of 500 +/- 35 Nm (370 +/- 26 lb ft).

Refer to SENR9169 Disassembly & Assembly and/or SENR8624 Specification manuals for more detailed information if needed.