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Old 08-18-2022, 07:20 PM   #1
2 Stovebolts
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PTO Frozen cannot engage

Posting here on my 1970 C30 dump truck.....Rarely use truck, sits inside unheated shed during winter months..went to raise dump body & cannot move handle/cable....Crawled underneith, seems like lever is frozen will not move after penetrating oil & tapping lightly with a hammer.....???? Never had this problem before????
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Old 08-19-2022, 12:17 AM   #2
franken
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Re: PTO Frozen cannot engage

Is the transmission in neutral?
Drive it around a bit forward and reverse and try again?
Get under it and have a look to see what you see?
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Old 08-19-2022, 11:02 AM   #3
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Re: PTO Frozen cannot engage

Every suggestion you made, I did....Seems the bind up is internal... loosed the cable so its not a frozen cable....I'm not at all familiar with PTO's, My guess is the dump body which is a "Wood" body, was put on when the truck was new....Just seems unlikely that the body dumped last fall & now the PTO is stuck ??
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Old 09-16-2022, 10:33 AM   #4
kwmech
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Re: PTO Frozen cannot engage

I don't see how that is possible unless the trans is really low on oil. You may have to pull it off and have a look see. It's only 6 nuts/bolts, the shaft and shifter cable, plus a drain pan to catch the oil
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Old 09-16-2022, 01:38 PM   #5
Richard2112
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Re: PTO Frozen cannot engage

I had this problem with an NV4500 I bought to rebuild. The shifter stub was bottoming out. Couldn't shift and it seemed frozen. I made a stainless steel shim that lifted the stub a little and it shifted smooth.

Last edited by Richard2112; 09-16-2022 at 02:11 PM.
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