HESITATION TO THE LEFT DURING SWING INITIATION
Usage:
CONFIDENTIAL TIBU3875-00
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TECHNICAL INFORMATION BULLETIN |
JUNE 11, 2003 |
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EXCAVTORS |
315C (CFT, CJC, CFB, AKE) |
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Component Code(s) 5057, 5059, 5000 |
SUBJECT: HESITATION TO THE LEFT DURING SWING INITIATION
PROBLEM:
During the initiation of the joystick swing left function the affected machines may experience a delay of up to 3 seconds before the upper structure will swing left.
SOLUTION:
The following may be used as an interim solution:
- Remove the 171-0189 flow control valves (shock-less valve) that are located in the pilot lines at the swing circuit main control valve spool caps.
Note: Removing the flow control valves will make the swing circuit slightly more aggressive during acceleration and deceleration. A slight reduction in modulation may also be noticed. This will not be detrimental to the machine reliability or durability.
Please refer questions to Jim Bathrick (919) 465-2742.
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