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Have a 2005 Case 1650k won't move forward or backward.

Customer Question
Have a 2005 Case...

Have a 2005 Case 1650k won't move forward or backward. Replaced both line charge pump, brake pump and torque converter. Two dealers have worked on it and can't seem to fine the problem and also replaced the relay related to forward and reverse. I'm reluctant to use dealers anymore because they don't seem to be trained on 1650k. Wondering if it is forwarded reverse spool switch. micro processor seems to work for all other functions . haven't tested the pressure yet but guess that's next. Any ideas that could help?

Mechanic's Assistant: What is the complete model and serial number of your machine?

It's a 2005, 1650k have to go read the S/n don't have it with me.

Mechanic's Assistant: Anything else you want the construction mechanic to know before I connect you?

All fluid levels are correct, and no leaks.

Submitted: 5 years ago.Category: Construction and Road Equipment
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Answered in 7 hours by:
2/16/2017
Mechanic: Dan, Technician replied 5 years ago
Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 14,646
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
Verified

Hi my name is***** will be glad to try to help. First check inside your filters and suction screen for any metal/debris that would flag an internal mechanical problem occurring or component failure. If okay let me know if you have any fault or error messages and more on the history of how this first started? Im not sure how the pumps were diagnosed without them testing pressures unless there were metal contamination that would require flushing and cleaning the system. Let me know

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Customer reply replied 5 years ago
The problem.first started with the line charge pump light coming on and the machine stopped going forward and backward. A case tech replaced the line charge pump and changed all the filters. machine still wouldn't go forward or reverse. Another case tech diagnosed problem as failed torque converter. Replaced torque converter, all new filters and oil, machine still won't go forward or reverse line charge light is still on even though pump is new as well as brake pump and all new seals. Convinced it must be on microprocessor or valves from control; stick. transmission shifts,machine moves side to side. don't have any confidence in dealerships personnel, spent thousands still can't move forward or reverse.
Mechanic: Dan, Technician replied 5 years ago

Have any of these techs had test gauges on this? They can not properly diagnose the pump or converter without testing pressures.....

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Customer reply replied 5 years ago
They wrote on the repair ticket 230 psi was test pressure. The case tech wrote the drive shaft for torque converter spins at idle but once put into forward or reverse the shaft stops. Replaced the torque with case rebuilt and still the shaft turns at idle but stops when control stick is placed into forward or reverse position.
Mechanic: Dan, Technician replied 5 years ago

Thanks for that. The question now is does the pressure drop off when that shaft stops turning. If the converter is good and pump you could be dumping off pressure from another internal leak in a clutch etc.

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Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 14,646
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Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.

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