CONFIDENTIAL TIBU4683-00
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TECHNICAL INFORMATION BULLETIN |
November 17, 2005 |
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Articulated Trucks |
725 (AFX1179-Up, B1L1-549), 730 (AGF1092-Up, B1M1-467), 730 EJECTOR (B1W1-187) |
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Component Code(s) 5136 |
SUBJECT: 725, 730 & 730 EJECTOR Articulated Trucks, Loss of Positioning of Valve Spool and Overheating of Hydraulic Oil Eliminated by New Plug in Hoist Control Valve
PROBLEM:
The 222-4737 Plug (1) may come loose from the end of valve spool (2) on certain hoist control valves. This will result in the loss of correct positioning of the valve spool and cause overheating of the hydraulic oil.
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Affected Hoist Control Valves |
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725 (AFX1179-Up), 730 (AGF1092-Up) |
241-4680 |
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725 (B1L1-549), 730 (B1M1-467) |
260-0285 |
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730 EJECTOR (B1W1-187) |
260-0286 |
SOLUTION:
The 222-4737 Plug (1) should be replaced with a 013-9041 Socket Setscrew. When you install a 013-9041 Socket Setscrew, first apply 154-9731 Thread Lock Compound to the threads of the socket setscrew.
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