drive problem, manual - Technical Troubleshooting discussion in Forkliftaction's forums

Cat Lift Trucks (& Caterpillar) M40D:
drive problem, manual

have a M40D cat, s/n 4WC01746. No manual.

Have run the diagnostics and everything is ok. The problem is when you step on the accelerator pedal, unit creeps, then takes off. Happens same way forward or reverse.
Checked the drive motor, SCRs, and replaced the throttle control.
Would like a repair manual or if anyone has had this problem

Posted 26 Nov 2014 23:07
Discussion started by howard_r
Missouri, United States

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good deal
yep that would of been my first suggestion, to check connections.

Posted 29 Nov 2014 00:25
Reply by swoop223
North Carolina, United States

You've been swooped!
swoop223@gmail.com

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found the problem. the logic card was not receiving one of the inputs from the throttle box due to corrosion. cleaned the contacts of corrosion. unit runs fine. thank you for your response!!!

Posted 28 Nov 2014 23:56
Reply by howard_r
Missouri, United States

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does this condition occur all the time (cold or hot)?
or only happen after the truck has run and gotten hot?

Posted 28 Nov 2014 03:15
Reply by swoop223
North Carolina, United States

You've been swooped!
swoop223@gmail.com

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