AC 7020 clutch

Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic

   Hi Guys,
        I have an Allis Chalmers 7020 with a 5 speed gearbox , a Hi-Lo range selector and the two power director buttons sticking up from the floor. Everything works OK except the clutch doesnt disengage completely when the pedal is pushed to the floor. That is if the trans is in neutral and I push the clutch pedal down all the way it grinds when I try to push it into gear. It will go into gear with a firm shove. When I stop the machine and push the clutch in and try to get it back into nuetral the gear lever is very stiff and I have to let the pedal up then hold pressure on the gear stick as I push the predal down to get it out of gear. I believe it has a multi disc wet clutch and I presume that hydraulic pressure releases the clutch pack. Can I have some advice on how to test and rectify this issue.
Thankyou

	This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
	The Forum	Parts and Services	Unofficial Allis Store	Tractor Shows	Serial Numbers	History

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
Michael B Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 12 hours 59 minutes ago Location: WA Points: 3	Post Options Post Reply Quote Michael B Report Post Thanks(0) Quote Reply Topic: AC 7020 clutch Posted: 12 hours 45 minutes ago at 1:09am
	Hi Guys, I have an Allis Chalmers 7020 with a 5 speed gearbox , a Hi-Lo range selector and the two power director buttons sticking up from the floor. Everything works OK except the clutch doesnt disengage completely when the pedal is pushed to the floor. That is if the trans is in neutral and I push the clutch pedal down all the way it grinds when I try to push it into gear. It will go into gear with a firm shove. When I stop the machine and push the clutch in and try to get it back into nuetral the gear lever is very stiff and I have to let the pedal up then hold pressure on the gear stick as I push the predal down to get it out of gear. I believe it has a multi disc wet clutch and I presume that hydraulic pressure releases the clutch pack. Can I have some advice on how to test and rectify this issue. Thankyou

Sponsored Links

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 23591	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 6 hours 59 minutes ago at 6:55am
	Stand alongside the tractor with the engine OFF and the cab door open. Grab the clutch pedal and pull down on it just a little and determine how much slack (freeplay) there is before you really can't pull it by hand. There should be ZERO freeplay !! Adjust the clutch pedal cable by loosening 2 nuts on the U-bolt and pull the cable forward as hard as you can and tighten the nuts. There could be some broken bushings in this area which will cause a lot of freeplay, so consider that as a possible cause. ZERO freeplay.

Lynn Marshall Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 13 Sep 2009 Location: Dana, Iowa Points: 2555	Post Options Post Reply Quote Lynn Marshall Report Post Thanks(0) Quote Reply Posted: 5 hours 49 minutes ago at 8:05am
	Excellent advice from the Dr. and welcome to the forum.

Nathan (SD) Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: Day County SD Points: 1326	Post Options Post Reply Quote Nathan (SD) Report Post Thanks(0) Quote Reply Posted: 4 hours 53 minutes ago at 9:01am
	My son had to slot the holes in the bracket a bit more to get enough travel on a high hour tractor.

AC7060IL Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 19 Aug 2012 Location: central IL Points: 3803	Post Options Post Reply Quote AC7060IL Report Post Thanks(0) Quote Reply Posted: 44 minutes ago at 1:10pm
	Like the Dr says, plus foot clutch cable will stretch in time & then become out of adjustment again later or simply break?? 7020s were mfg from 1977-81, so 45+ years old OEM cable? Here’s a weblink to Bunker Hill cables. They mfg a replacement for AGCO 70269446. Not a difficult repair. https://bunkerhillcables.com/clutch-pedal-cable-replaces-allis-chalmers-70269446/?srsltid=AU7gw4X0KLLwo6EiXUf3xOvubvzOej0Z_X5k8yCYD2eIzFLpR5DR67aM