Usage:
CONFIDENTIAL
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TECHNICAL INFORMATION BULLETIN |
FEBRUARY 21, 2001 |
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EXCAVATORS |
365B L (9PZ, 9TZ) EXCAVATORS |
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Component Code(s) 1374 |
SUBJECT: HYDRAULIC OIL COOLER IDENTIFICATION
PROBLEM:
Reports from the field indicate that the oil cooler core may develop leaks on certain Excavators. The leaks occur at the joints between the oil cooler core and the header, and between the core and the tank. Typical leak locations are at the four corners of the core or at the center of the core. The thermal cycle during machine operation is the cause of most failures.
SOLUTION:
The 162-6275 Oil Cooler Core Assembly is a component in the 162-6350 Radiator and Oil Cooler Group. One in a series of improvements is the addition of saw cuts to the cooler. The illustrations show the locations of the saw cuts in the affected components.
If a 162-6275 Oil Cooler Core Assembly with the saw cuts develops leaks, please contact your marketing group in order to obtain parts return authorization information:
NACD Market - Kee S. Low, HEX Service Engineering, Aurora, Illinois, (630) 859-6379
COSA Market - HEX Product Support, Gosselies, Belgium,
(32) 71 25 33 82
February 21, 2001
Component Code(s) 1374
Illustration 1. Typical oil cooler core assembly and locations of saw cuts (A).
February 21, 2001
Component Code(s) 1374
Illustration 2. 162-6350 Radiator and Oil Cooler Group
(1) 162-6276 Aftercooler Assembly
(2) 162-6274 Radiator Assembly
(3) 162-6275 Oil Cooler Core Assembly
February 21, 2001
Component Code(s) 1374
Illustration 3. There are two saw cuts at each end of the interlocking sides. It may be difficult to view the saw cuts while the oil cooler is assembled in the cooling group.
February 21, 2001
Component Code(s) 1374
Illustration 4. Typical saw cut at the four corners of the oil cooler core assembly. It may be difficult to view the saw cuts while the oil cooler is assembled in the cooling group.
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ALL RIGHTS RESERVED