HD 6 G Transmission

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   Happy New Year AC Guys!
I am considering purchase of a 1958 HD6 G High Lift.   500 hours on the dial, track link height is excellent as are the rollers, idler and sprockets. 

Defect is that reverse gear is out of the transmission. 

Was hoping that I would find that the unit was made by Clark but am not sure who made the transmission.   This tranny is set up with the two speed reverse.

Would certainly appreciate your insights on who manufactured the transmission for the HD5's and 6's and if gears and synchros might be available yet. 

If I could source those parts this machine would be put back into service. 

Thank - you...Orangeman

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orangeman Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Points: 1818	Post Options Post Reply Quote orangeman Report Post Thanks(0) Quote Reply Topic: HD 6 G Transmission Posted: 01 Jan 2015 at 11:16am
	Happy New Year AC Guys! I am considering purchase of a 1958 HD6 G High Lift. 500 hours on the dial, track link height is excellent as are the rollers, idler and sprockets. Defect is that reverse gear is out of the transmission. Was hoping that I would find that the unit was made by Clark but am not sure who made the transmission. This tranny is set up with the two speed reverse. Would certainly appreciate your insights on who manufactured the transmission for the HD5's and 6's and if gears and synchros might be available yet. If I could source those parts this machine would be put back into service. Thank - you...Orangeman

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Coke-in-MN Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Afton MN Points: 41848	Post Options Post Reply Quote Coke-in-MN Report Post Thanks(0) Quote Reply Posted: 01 Jan 2015 at 12:34pm
	arent any syncros in the AC transmission - all straight cut gears . Should be same as HD5 in the output of trany mains shaft is also pinion gear for rear drive . the output of trany is supported by double row ball bearing and gear mesh is controlled by shimming that bearing to ring gear and by shims of timken bearings on the side bearings which support the drives for clutch pack. I have a set of gears for the single speed trany used in the HD5 - but sold the 2 speed HD5 I had as a spare.
	Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful."

orangeman Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Points: 1818	Post Options Post Reply Quote orangeman Report Post Thanks(0) Quote Reply Posted: 01 Jan 2015 at 1:01pm
	Coke: Thanks for the reply, I see Allis had a long term relationship with Borg Warner for Allis Transmission at least that was the case for farm equipment. Who was the vendor that built AC crawler and dozer transmissions for the HD5 and HD 6's? I think was happened is the operator had the rpm up to high and did not throttle down and slammed the machine into reverse with a real heavy load thus the damage. Orangeman

gemdozer Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 17 Sep 2009 Points: 999	Post Options Post Reply Quote gemdozer Report Post Thanks(0) Quote Reply Posted: 02 Jan 2015 at 4:14am
	I dismantled some hd6 transmission and still have some gears if I can help

orangeman Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Points: 1818	Post Options Post Reply Quote orangeman Report Post Thanks(0) Quote Reply Posted: 02 Jan 2015 at 8:29am
	Gemdozer: I will be in touch through PM when I work through the contract on the machine. Likely will be spring as snow on ground here in Northern NY.