PRODUCT SUPPORT PROGRAM FOR REPLACING THE BALANCING STEM IN THE RIDE CONTROL VALVES ON CERTAIN 966G AND 972G WHEEL LOADERS

Usage:

SEBE7877

January 2, 2002
U-1
A-1
AU-1
S-1
H-1
O-1

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*After failure only*	PRODUCT SUPPORT PROGRAM FOR REPLACING THE BALANCING STEM IN THE RIDE CONTROL VALVES ON CERTAIN 966G AND 972G WHEEL LOADERS
5066		PS50323

NOTE: This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS50323" as the Part number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

NOTE: Although this Program is to be administered as described above on the affected Product, parts should be removed from parts as some as possible.

TERMINATION DATE

January 31, 2004

PROBLEM

The balancing stem in the ride control valve needs to be replaced on certain 966G and 972G Wheel Loaders. The balancing stem in the ride control valve has broken resulting in noisy operation of the ride control system. Parts have been released to replace the failed stem.

AFFECTED PRODUCT

966G         3ZS1-Up
             9RS1-Up
             AAH1-Up
             3SW1-Up
             3PW1-Up
             8XW1-Up

972G         7LS1-Up
             1EW1-Up
             AAW1-Up
             4WW1-Up
             6AW1-Up
             9GW1-Up

PARTS NEEDED

1 ? 3K0360 Seal
1 ? 4T1697 Plug
1 ? 2058336 Retainer
2 ? 2058337 Retainer
2 ? 2058338 Spring
1 ? 2059168 Stem ? Diameter 12.667
1 ? 2059173 Stem ? Diameter 12.677
1 ? 2062124 Stem ? Diameter 12.672

ACTION REQUIRED

Replace the failed stem using a new stem, retainers and springs as shown in Illustration 2. Select the stem that fits the bore of the existing valve.

SERVICE CLAIM ALLOWANCES

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Product smu	Caterpillar		Dealer Suggested		Customer Suggested
Product smu	Parts	Labor Hrs	Parts	Labor Hrs	Parts	Labor Hrs
0-4000	100%	1	0	0	0	0
4001-8000	33 1/3%	0.5	0	0	50%	0.5
NOTE: This is a 1-hour job.

PARTS DISPOSITION

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

Attach. (1-Rework Procedure)

Rework Procedure

Release the pressure in the hydraulic system. Refer to Disassembly and Assembly, "System Pressure Release".
Locate ride control diverter valve attached to main implement control valve. Refer to RENR2116 Disassembly and Assembly Manual.
Refer to Illustration 611 in RENR2116, the disassembly procedure for the ride control diverter valve. Remove the tube connected to plug identified as Item 3.
Remove plug (Item 3), balance stem and spring pack. Shown in section A-A below. Replace with new stem, springs and retainers as shown in Illustration 2.

Illustration 1

Illustration 2

Illustration 2 shows the new stem, springs and retainers installed in the ride control valve. End #1 uses two of the 2058337 Retainers and one 2058338 Spring. End #2 uses one 2058336 Retainer, one 2058338 Spring and one 4T1697 Plug. Note that for End #2, the long end of 2058336 Retainer fits inside spring. NOTE: The original stem is select fit to the bore. Measure the diameter of the original stem and select a new 2059168, 2059173 or 2062124 Stem which is closest to the original stem without being larger than the original stem. Be sure to insert the stem with the shorter land surface toward End #2 as shown above.