elabay Posted June 28, 2018 Share Posted June 28, 2018 I'm not sure the correct term, but does anyone know much about it. (I'm referring to the added piece on trans.) We have one on a winch truck. Whenever used it sometimes binds up, other times sounds like something isn't engaged all the way, and sometimes works great. When it binds or doesn't engage all of the way, I can clutch it and flip the button back and forth and get it to work right. Is there any adjustment on it or anything simple it could be. Sent from my SM-J710MN using Tapatalk Quote Link to comment Share on other sites More sharing options...
Freightrain Posted June 28, 2018 Share Posted June 28, 2018 Sounds like the PTO (Power take off). The old ones were cable control, newer are electric or air. There is a gear that meshes with the transmission to gives you power to your winch. Likely not engaging fully. I'm sure someone here will have more hands on information about it. Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
41chevy Posted June 28, 2018 Share Posted June 28, 2018 (edited) Some cases the seal for the servo motor that engages and disengages the PTO goes bad and oil leaks into the servo motor which causes the motor to lose conductivity. That causes those issues , same as the electric shift two speed rears. . Paul Edited June 28, 2018 by 41chevy Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment Share on other sites More sharing options...
elabay Posted June 28, 2018 Author Share Posted June 28, 2018 The only reason I didn't think it was a pto problem is because it actually has 2 winches and 2 pto's. It acts up with both winches. I should have stated that earlier. They are also air operated.Sent from my SM-J710MN using Tapatalk Quote Link to comment Share on other sites More sharing options...
elabay Posted June 28, 2018 Author Share Posted June 28, 2018 Also, I changed the switch in the cab just to rule that out.Sent from my SM-J710MN using Tapatalk Quote Link to comment Share on other sites More sharing options...
BGarofalo Posted June 28, 2018 Share Posted June 28, 2018 You have a neutral lockout. You have to pick a gear on transmission to operate winch correct? If the seals are swollen or damaged from an oily air system they can stick like that. Quote Link to comment Share on other sites More sharing options...
Swishy Posted June 29, 2018 Share Posted June 29, 2018 Do not engage both PTO's together as they can load up with them travelling @ different speed if under load we also get gear jam when we have load on winch cable and gearbox is in gear justl ike a 4x4 vehicle with different size tyres it makes it hard to shift out of 4x4 as the driven axles are under load to either shorten or length n the WB cya §wishy 1 Quote Link to comment Share on other sites More sharing options...
elabay Posted June 29, 2018 Author Share Posted June 29, 2018 Both ptos are engaged at times but not always. We talked to a guy who said we need to look into the range cylinder on the back of trans. I guess we'll just take it in. Thanks for the replies. Sent from my SM-J710MN using Tapatalk Quote Link to comment Share on other sites More sharing options...
St.Elmo Diesel Repair Posted July 30, 2020 Share Posted July 30, 2020 (edited) Old post are still read so I would like to comment and hope it helps someone in the future. Replace the shuttle valve part #25156277 , most likely it is hanging up when you flip your pto switch. It allows air to flow into the neutral lockout on rear of transmission. Not enough air or no air will keep drive line engaged. Thanks Edited July 30, 2020 by St.Elmo Diesel Repair Quote Link to comment Share on other sites More sharing options...
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