SPRING,OUTER 0946465 - Caterpillar

TECHNICAL INFORMATION BULLETIN November 03, 2004
Track-Type Tractors D6R II (AFM1-Up, AEM1-Up, BPM1-Up, BRJ1-Up, BLT1-Up, BLE1-Up, BRE1-Up, BNL1-Up, BMK1-Up)
D6R LGP II (ACJ1-Up, ADE1-Up, BNC1-Up, AFD1-Up, BPZ1-Up)
D6R XL II (AGM1-Up, BMJ1-Up, BMY1-Up, AAX1-Up, FDT1-Up, CAD1-Up, BRZ1-Up, BPS1-Up)
D6R XW II (AEP1-Up, DAE1-Up)
D7R II (AEC1-Up, BRM1-Up, ACS1-Up, BRP1-Up)
D7R LGP II (ABJ1-Up, BNX1-Up, AFG1-Up, BNM1-Up)
D7R XR II (AGN1-Up, BPT1-Up, ADW1-Up, BPK1-Up)
Component Code(s) 1204SUBJECT: Some D6R II and D7R II May Experience Early Hour Poor Shifting and/or Excessive Contamination In The Power Train Oil Filter
PROBLEM:
The 187-8195 Drive Gear that is used to drive the implement and steering pump, may experience inadvertent thrust loads. These loads can cause the gear to wear into the flywheel housing. This wear causes fine metal particles that can contaminate the power train oil system. This may cause some D6R Series II and D7R Series II Track-Type Tractors to experience poor shifting and/or excessive contamination in the power train oil filter.
SOLUTION:
If a machine is experiencing poor shifting and/or excessive contamination in the power train oil filter, perform the following steps:
Remove the cover on the front of the flywheel housing. The cover is located in front of the implement and steering pump.
Position the drive gear towards the front of the flywheel housing.
Illustration 1
Install a 6V-6106 Dial Indicator Group, as shown. Zero out the dial indicator.
Push the drive gear towards the implement and steering pump. If the measurement taken is greater than 0.9 mm (0.04 inch), Caterpillar recommends a visual inspection of the flywheel housing and the pump drive gear should be performed.
Illustration 2
If the flywheel housing is found to be worn, as shown in Illustration 2, the items listed in the Table (1) for the D6R Series II and Table (2) for the D7R Series II should be replaced.
After the required repairs are made, the power train oil system should be flushed of all contaminates and the filter should be changed.
If early hour shifting problems were encountered, the shift solenoids may need to be changed. Refer to the Parts Manual for the machine that is being serviced for the correct part numbers and any additional part numbers that may need to be replaced.
Illustration 3
Required Parts for the D6R Series II
Item
New Pt. No.
Description
Qty
1
234-3443
Flywheel Housing Gp
1
2
187-8195
Drive Gear
1
3
187-8222
Adapter As
1
4
1W-4741
Idler Gear
1
5
154-3358
Adapter Gear
1
-
187-8971
Crankshaft Seal Gp
1
-
199-6163
O-Ring Seal
1
Table 1
Required Parts for the D7R Series II
Item
New Pt. No.
Description
Qty
1
234-3442
Flywheel Housing Gp
1
2
187-8195
Drive Gear
1
3
187-8223
Adapter As
1
4
1W-4741
Idler Gear
1
5
154-3358
Adapter Gear
1
-
100-5421
Crankshaft Seal Gp
1
-
107-6280
O-Ring Seal
1
Table 2
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