AC 200 Powerdirector troubles- no neutral
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Category: Allis Chalmers
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=44836
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Topic: AC 200 Powerdirector troubles- no neutral
Posted By: DougG
Subject: AC 200 Powerdirector troubles- no neutral
Date Posted: 01 Feb 2012 at 4:22pm
| Working on a 200 got all the outer oil leaks fixed , now the next problem is the POWERDIRECTOR has no neutral - i put the pressure gauge on the fittings to test the pressure and its right on at 300 lbs with a hyd. pto clutch but moving the adjuster rod the pressure never changes - it does go to 280 in a spot , but never to 60 where neutral is supposed to be ; is there anything to check , adjust on the outside , or in the door on the PD ? I am afraid its internal but just hoping to get lucky !!! |
Replies:
Posted By: DougG
Date Posted: 01 Feb 2012 at 8:16pm
| BUMP - |
Posted By: MACK
Date Posted: 01 Feb 2012 at 9:43pm
|
Where did you check pressure? There are two test plugs on valve. One for Hi one for Lo. If lever is centered it may have some broken plates. MACK |
Posted By: DougG
Date Posted: 02 Feb 2012 at 3:50am
| I checked the pressure at the T right in front of the steering wheel , usually i can move the cylinder back and forth to determine where neutral is ; when it hits 60 lbs ; the gauge shows a steady 300 , there is one point it will drop to 280, ; i havent checked at the test ports on the valve , Thanks |
Posted By: stray
Date Posted: 02 Feb 2012 at 6:16pm
|
These are the ports that Mack is talking about.  I disconnected the valve so I was sure it was in neutral for the first test. if the pressure is low in both ports you may want to check these bushing.  ------------- 1969 190XT series 3 |
Posted By: DougG
Date Posted: 02 Feb 2012 at 7:03pm
| Thanks, i checked the bushings and all the linkage , its all good - i havent checked the pressure at the ports , just at the T fitting by the steering wheel - it had 300 on each side , but never lower than 280, cleaned the valve up but no change |
Posted By: 75-200
Date Posted: 02 Feb 2012 at 9:36pm
| There was a factory tech bulletin on changing the length of the linkage to correct this sort of issue. My local A-C dealer, Shantz Farm Equipment in Ontario (1000 miles away), faxed it to me years ago. I made the changes and it sorted out this problem for me. I did eventually have to replace the power director discs some time later. Dan |
Posted By: 75-200
Date Posted: 04 Feb 2012 at 12:00pm
| Just giving this topic a little bump to get it up with the 190 p/d question. Having some issues with my p/d on the 200 again. Hoping for some more input. |
Posted By: DougG
Date Posted: 04 Feb 2012 at 12:40pm
| I checked the output at the ports its 300 lbs each side - i,ve never seen this test outlined in a fix it manual ; i did figure the ports were for testing there ; i have been testing at the T like the book says and its 300 on each side , it just never drops to 60 for a neutral; i took the hyd. assembly apart that controls the fluid , no change , i believe its prolly in the PD clutch packs or sealing rings - but dont want to go thru pulling the PD in i dont have too !!! Just was thinking maybe someone ran into this before ; i have worked on a few 200,s before and always seem to have pressure issues ,always put new bushings in ; all the linkage is always tight ; wonder what AC changed besides the PD shifter ??? |
Posted By: Orange Blood
Date Posted: 04 Feb 2012 at 1:09pm
|
Sounds like you could have valve problems. If you check at the ports shown, you can see which side is engaged. Really sounds like the spool is broken, and or stuck in one position. ------------- Still in use: HD7 WC C CA WD 2-WD45 WD45LP WD45D D14 3-D17 D17LP 2-D19D D19LP 190XTD 190XTLP 720 D21 220 7020 7030 7040 7045 3-7060 Projects: 3-U UC 2-G 2-B 2-C CA 7-WC RC WDLP WF D14 D21 210 7045 N7 |
Posted By: DougG
Date Posted: 04 Feb 2012 at 1:17pm
| Took it all apart spool good ; both sides engage, pressure at 300 lbs |
Posted By: DrAllis
Date Posted: 04 Feb 2012 at 2:28pm
| Pretty simple.....300 lbs in LOW and zero in HIGH.......300 lbs in HIGH and zero in LOW....neutral should be zero on both gauges. If you got these three things and it creeps terribly (remember a certain amount of creep is normal) you have warped or broken discs and plates. |
Posted By: DougG
Date Posted: 04 Feb 2012 at 2:52pm
| Thanks , thats what i was thinking ,but hoping for a simpler answer just wanted an expert opinion !! |
Posted By: Orange Blood
Date Posted: 04 Feb 2012 at 5:14pm
|
But the original post says you never get below 280lbs in all three lever positions. That is not broken parts inside. Doesn't mean you don't also have broken parts inside, but cannot be sure until you get near zero psi in neutral. I cannot see any reason that if you are getting 280 in neutral that it is internal from the valve. ------------- Still in use: HD7 WC C CA WD 2-WD45 WD45LP WD45D D14 3-D17 D17LP 2-D19D D19LP 190XTD 190XTLP 720 D21 220 7020 7030 7040 7045 3-7060 Projects: 3-U UC 2-G 2-B 2-C CA 7-WC RC WDLP WF D14 D21 210 7045 N7 |
Posted By: MACK
Date Posted: 04 Feb 2012 at 10:39pm
| I beleve 280 psi at all 3 positons was checking at T after steering not at valve. Like I said before broken or worped plates. Not uncommon on PD. MACK |