CHIEFWAHO Posted March 18 Report Share Posted March 18 Anyone have any experience fixing a Rockwell 10 speed shift knob that is leaking air. (1999 VNL610) Mine is leaking at the fitting, as shown by red arrow in picture. Found the leak/leaks late yesterday and did not have time to investigate further. I've done repairs on the air manifold and other air accessories and assume they are these similar to the collet & O-ring's used there? (Push the collet in to release the line, then pull collet out, remove old O-ring, replace with new?_ Guessing removal of entire know assembly would make it easier to work on. I don't recall any this small in the repair kit previous purchased. Quote 1999 Volvo VNL610, Cummins M11 - 350/400 HP, 10 speed Rockwell - 'CHIEF' Custom flatbed with TrailerSaver air hitch. 3 cyl 8000 watt Kubota diesel generator. Link to comment Share on other sites More sharing options...
CHIEFWAHO Posted March 19 Author Report Share Posted March 19 Got the knob removed. They appear to be 1/8" air lines. Was not able to remove the collet. I'm also not having much luck find the 1/8" size collets or O-rings Quote 1999 Volvo VNL610, Cummins M11 - 350/400 HP, 10 speed Rockwell - 'CHIEF' Custom flatbed with TrailerSaver air hitch. 3 cyl 8000 watt Kubota diesel generator. Link to comment Share on other sites More sharing options...
Wrknrvr Posted March 19 Report Share Posted March 19 As for finding those fittings, check with auto parts stores for fittings for air shock systems. That could help. Does the collet move at all. Look at the end of the air line. It could just have compressed the line over time. And just happened to come out. The line may wore off where the collet grips the line. Possibly just cut 1/4” off the end, at a very slight angle, apply silicone lube. Then try pushing it back into place, rotating as pushing? Just a quick thought. Quote Link to comment Share on other sites More sharing options...
rickeieio Posted March 19 Report Share Posted March 19 First, are you sure they're push-to-connect? I've not worked on a Rockwell, but I've serviced several Eaton/Fuller shifters. They didn't use p-t-c. Secondly, not all p-t-c are serviceable. The factory fittings on our KW are one time only. They only come apart by destruction. Quote KW T-680, POPEMOBILE Newmar X-Aire, VATICAN Lots of old motorcycles, Moto Guzzi Griso and Spyder F3 currently in the front row Young enough to play in the dirt as a retired farmer. contact me at rickeieio1@comcast.net Link to comment Share on other sites More sharing options...
CHIEFWAHO Posted March 25 Author Report Share Posted March 25 Did not have much luck repair the original know. Instead went this direction. Dorman 455-5001 Heavy Duty Air Shift Knob. The Dorman knob does not include any air line fittings. So I got these: 5/32" DOT Air Fittings, DOT Brass Push to Connect The transition piece on the Dorman knob does not mate well with the factory sifter boot. I ended up trimming that piece to somewhat adapt, it will probably require some black Gorilla tape finish. I did not get to test drive (to many things to move to get truck out of Q-hut), it however did appear to be leaking any air. Quote 1999 Volvo VNL610, Cummins M11 - 350/400 HP, 10 speed Rockwell - 'CHIEF' Custom flatbed with TrailerSaver air hitch. 3 cyl 8000 watt Kubota diesel generator. Link to comment Share on other sites More sharing options...
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