HARNESS AS-TRANSMISSION 1071007 - Caterpillar

TECHNICAL INFORMATION BULLETIN FEBRUARY 5, 2003
WORK TOOL
SKID STEER LOADER
MULTI TERRAIN LOADER CV16 (ACH1-UP),
CV18 (AAM1-UP) VIBRATORY COMPACTORS
216 (4NZ1-UP),
226 (5FZ1-UP),
228 (6BZ1-UP),
236 (4YZ1-UP),
246 (5SZ1-UP),
248 (6LZ1-UP),
232 (CAB1-UP),
242 (CMB1-UP),
252 (FDG1-UP),
262 (CED1-UP) SKID STEER LOADERS
247 (CML1-UP),
257 (CMM1-UP),
267 (CMP1-UP),
277 (CNC1-UP) MULTI TERRAIN LOADERS
Component Code(s) 6605, 6612DM, 6612DRV, 5360CHSUBJECT: MODIFICATION TO PREVENT OIL BLOWING THROUGH THE 165-8460 VENT AS.
PROBLEM:
There have been problems of oil blowing through the 165-8460 Vent As. during compactor operations. Previous modifications have not been successful in eliminating this problem.
The 165-8460 Vent As. provides pressure relief during operations to protect the drum?s bearing seals. The 165-8460 Vent As. is part of the 165-8458 Shaft Cover Gp., which is located on the shaft end of the drum, opposite of the drum motor.
SOLUTION:
Perform the following modification to the 165-8458 Shaft Cover Gp.
Vent Modification:
Parts Needed
Item Quantity Part Number Description
1 1 4B-4550 Relief Fitting
2 1 3B-7721 Reducer Bushing
- - 5P-3413 Pipe Sealant
Remove the original 165-4860 Vent As. (A) from Elbow (B). See Figure 1.
Or, if previously modified, remove the 8L-6005 Tee (1) with the 165-4860 Vent As. (A) and the 3J-5390 Plug (2) from Elbow (B). See Figure 2.
Install the 3B-7721 Reducer Bushing (2) in Elbow (B). See Figure 3.
Then, install the 4B-4550 Relief Fitting (1) in the 3B-7721 Reducer Bushing (2).
Note: Apply 5P-3413 Pipe Sealant to the threads when you install the reducer bushing and the relief fitting.
Figure 1. The original vent assembly.
(A) Vent As. (B) Elbow (c) Vent Plate
Figure 2. The previously modified vent assembly.
(A) Vent As. (B) Elbow
(C) Tee (D) Plug
Figure 3. The new vent assembly modification.
(1) 4B-4550 Relief Fitting (2) 3B-7721 Reducer Bushing
(B) Elbow (C) Vent Plate
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