Allis Chalmers 185 Power Director Problems

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   Hello,

I have a 1979 Allis Chalmers 185. I am having some trouble with the power director.  When I hook a 5 tooth Chisel to the rear and the tractor is hot, I have trouble with it keeping in motion. I generally run in 1st gear in hi or low range on the power director. When it gets hot the tractor stops, which leads me to have power director issues. I am not certain if that is the problem yet. When the tractor stops I still have power steering. 

I have also tried putting the tractor in high gear and put the brakes on while the PTO is engaged the  to test the main clutch. The PTO continued to turn.  

I am looking to test the pressure of the pump, but I have little to no knowledge about what section should be checked on the pump. I do not have 185 manual, I have a 190 manual. I am confused on which part of the pump is the section that operates the power director. Or where I should check the pressure. 

Has any one ever encountered this problem or could some one provide me a picture of the section of the pump that should be tested. I plan on checking the rest of the pump as well to check the other hydraulic pressures. 

Well any helpful information that any would could provide would great.

Thanks, Chris

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Outdoorsguy257 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 23 Apr 2018 Location: PA Points: 7	Post Options Post Reply Quote Outdoorsguy257 Report Post Thanks(0) Quote Reply Topic: Allis Chalmers 185 Power Director Problems Posted: 04 Aug 2018 at 6:30pm
	Hello, I have a 1979 Allis Chalmers 185. I am having some trouble with the power director. When I hook a 5 tooth Chisel to the rear and the tractor is hot, I have trouble with it keeping in motion. I generally run in 1st gear in hi or low range on the power director. When it gets hot the tractor stops, which leads me to have power director issues. I am not certain if that is the problem yet. When the tractor stops I still have power steering. I have also tried putting the tractor in high gear and put the brakes on while the PTO is engaged the to test the main clutch. The PTO continued to turn. I am looking to test the pressure of the pump, but I have little to no knowledge about what section should be checked on the pump. I do not have 185 manual, I have a 190 manual. I am confused on which part of the pump is the section that operates the power director. Or where I should check the pressure. Has any one ever encountered this problem or could some one provide me a picture of the section of the pump that should be tested. I plan on checking the rest of the pump as well to check the other hydraulic pressures. Well any helpful information that any would could provide would great. Thanks, Chris

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Gary(VA) Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 13 Sep 2009 Location: Troutville, VA Points: 341	Post Options Post Reply Quote Gary(VA) Report Post Thanks(0) Quote Reply Posted: 04 Aug 2018 at 7:59pm
	You should get a more specific answer from some of the other guys but you need to check the pressures at the valve for the power director. There's adjustment that can be made but that's usually to equal out the pressure on the high and low side. If it's only happening when it's hot and then is ok when cool I doubt it's the main clutch. I would also think you would need to hook something up to the pto shaft to see if it's still turning. There might be enough drag from the main clutch to turn it with no equipment on it? If you pm me your email I might be able to send you some photos of the pages that talk about the power director from the service manual.

MACK Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 17 Nov 2009 Points: 7664	Post Options Post Reply Quote MACK Report Post Thanks(0) Quote Reply Posted: 04 Aug 2018 at 10:09pm
	There is a relief valve in control valve. With a 7/8 wrench, remove plug at bottom of valve opposite spool. Remove all parts clean and polish, replace and see if it holds. MACK

ksbowman Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 19 Mar 2013 Location: Paola, Ks Points: 228	Post Options Post Reply Quote ksbowman Report Post Thanks(0) Quote Reply Posted: 05 Aug 2018 at 8:17am
	When you clean the relief valve be aware the spring that is under the cap is under quite a bit of pressure and can come out pretty forceful.

Outdoorsguy257 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 23 Apr 2018 Location: PA Points: 7	Post Options Post Reply Quote Outdoorsguy257 Report Post Thanks(0) Quote Reply Posted: 05 Aug 2018 at 11:37am
	Do you both suggest that I take the actuator off the tractor since the relief valve is on the the bottom pointing downward? Thanks Chris

Outdoorsguy257 Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 23 Apr 2018 Location: PA Points: 7	Post Options Post Reply Quote Outdoorsguy257 Report Post Thanks(0) Quote Reply Posted: 05 Aug 2018 at 11:39am
	My email address is outofctrlg178@yahoo.com. Thanks

ksbowman Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 19 Mar 2013 Location: Paola, Ks Points: 228	Post Options Post Reply Quote ksbowman Report Post Thanks(0) Quote Reply Posted: 05 Aug 2018 at 3:38pm
	I took mine apart on my 180, but my 170 looks the same. I took mine apart with it in the console and took it out, cleaned it and put it back in. There are also some shims to adust the pressure so note how many and wear they are positioned.

Alvin M Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 24 Jun 2018 Location: PA Points: 800	Post Options Post Reply Quote Alvin M Report Post Thanks(0) Quote Reply Posted: 05 Aug 2018 at 4:10pm
	Do what Mack said cap has shims in it keep it turned up. then remove spring.and guide and spool top of spool has little plunger in end . most calls I get they don't see it pulls out of the end might have to use magnet check small hole in end of spool. put oil in spool push in plunger oil should spray out of hole .You should have 5 parts plus shims Edited by Alvin M - 05 Aug 2018 at 4:24pm

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 21788	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 06 Aug 2018 at 7:34am
	A 170 doesn't have a hydraulic power director clutch. What are you talking about ??

Alvin M Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 24 Jun 2018 Location: PA Points: 800	Post Options Post Reply Quote Alvin M Report Post Thanks(0) Quote Reply Posted: 06 Aug 2018 at 7:39am
	Dr Allis it is a 185

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 21788	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 06 Aug 2018 at 8:15am
	For KSbowman.

ksbowman Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 19 Mar 2013 Location: Paola, Ks Points: 228	Post Options Post Reply Quote ksbowman Report Post Thanks(0) Quote Reply Posted: 06 Aug 2018 at 8:23am
	You are absolutely correct DrAllis. I have a 170,180 and 190 and I meant 190. The 170 has the power director with the long lever on the side for high/low.