7030 hyd. problems
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=136409
Printed Date: 10 Sep 2025 at 8:03am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 7030 hyd. problems
Posted By: GM Guy
Subject: 7030 hyd. problems
Date Posted: 19 Mar 2017 at 11:20pm
|
Hi all, Bought a 7030 and turned dad loose roading it home. I didnt think of it until after dad called and told me it had issues, but it clicked "Wasnt there a thread on the Allis forum about this" and unfortunately I cant find it. Direction to the thread, or an answer to the question would be appreciated. The tractor was running warm, and making hydraulic noises, and the 3pt. would not lower, 3pt controls dont seem to respond. Dad, rather than park it or call me, kept running till a t-fitting in the stack blew, and didnt notice anything till the hydraulic whine quit, and he looked back and saw the trail of oil. What happened, and what needs done to keep it from happening again. Essentially I think the draft control was maxing out the hydraulics and it finally blew a fitting apart on the stack. Finally, the dreaded question: what got messed up in this little outing? Any input appreciated, Thanks! ------------- Gleaner: the properly engineered and built combine. If you need parts for your Gleaner, we are parting out A's through L2's, so we may be able to help. |
Replies:
Posted By: GM Guy
Date Posted: 19 Mar 2017 at 11:24pm
|
also, for the seasoned experts, the t-fitting looks to be somewhat special, and is located on the 3pt valve. On the Agcopartsbooks.com site, its page 260 in the 7030 book, and the way dad described the fitting its the tee on the end of line 26 on the diagram (left end) What is the part number of this tee? it is not on the system. Is it common? Only dealer in the area the tractor is at is CIH and JD, so I hope its a common enough fitting. Thanks! ------------- Gleaner: the properly engineered and built combine. If you need parts for your Gleaner, we are parting out A's through L2's, so we may be able to help. |
Posted By: MACK
Date Posted: 20 Mar 2017 at 9:20am
| Sounds like misadjusted linkage to 3pt hitch. MACK |
Posted By: bigal121892
Date Posted: 20 Mar 2017 at 6:25pm
| Based on a similar experience, if it was me, I would take a look at the pinion gears and shaft. Years ago Uncle ran one of the 7040's out of hydraulic oil, and a couple of months later the rear end failed. Once the hardness of the shaft has been compromised, it doesn't take long to chew through the rest of the shaft. The sooner this is taken care of, the cheaper it will be, because once that shaft breaks, it does a lot of damage to other components. |
Posted By: DrAllis
Date Posted: 20 Mar 2017 at 7:39pm
| The fitting is special and only comes from AGCO. Fill it back up with oil and fix the hitch linkage so the 3 point comes almost all the way to the top, but does NOT come up the last couple of inches causing the pump to continue to hammer. |
Posted By: GM Guy
Date Posted: 20 Mar 2017 at 11:51pm
|
what would cause the 3pt to not lower, even when dropping both the traction booster and position control levers?
------------- Gleaner: the properly engineered and built combine. If you need parts for your Gleaner, we are parting out A's through L2's, so we may be able to help. |
Posted By: LB0442
Date Posted: 20 Mar 2017 at 11:53pm
I went through my bucket of fittings, is it either of these? |
Posted By: Lynn Marshall
Date Posted: 21 Mar 2017 at 7:23am
| It's probably the one on the right. Special, expensive, and a bit of a whore to replace. |
Posted By: Joe(TX)
Date Posted: 21 Mar 2017 at 4:34pm
|
It looks like the PN is 70268686 ------------- 1970 190XT, 1973 200, 1962 D-19 Diesel, 1979 7010, 1957 WD45, 1950 WD, 1961 D17, Speed Patrol, D14, All crop 66 big bin, 180 diesel, 1970 170 diesel, FP80 forklift. Gleaner A |
Posted By: Joe(TX)
Date Posted: 21 Mar 2017 at 6:23pm
|
It looks like the fitting could be made from a 90 deg. ORB to JIC adapter (-12 I think) by taping a 1/4 NPT hole in the side and installing a 1/4 NPT x 04 JIC 45 deg. adapter. ------------- 1970 190XT, 1973 200, 1962 D-19 Diesel, 1979 7010, 1957 WD45, 1950 WD, 1961 D17, Speed Patrol, D14, All crop 66 big bin, 180 diesel, 1970 170 diesel, FP80 forklift. Gleaner A |
Posted By: GM Guy
Date Posted: 21 Mar 2017 at 11:19pm
|
Good news: It appears after inspecting the fleet, that the 7040/60/80 and all newer ones have that special weird fitting, but the 7030/7050 has an uncommon, but still much easier sourced Tee, with JIC on two of the ends, and ORB on the other. I was able to source the fitting from the local manufacturing/ irrigation system sales and service company for 11 dollars. Dad said the rear end took about 10-15 gallons of oil. I asked him for more detail on the failure, and he said that the noise quit, he looked back, saw oil spewing, pulled over and shut it down. Total time from noise stopping to tractor off was supposedly 30 seconds. Any chance of anything being damaged? I drove it the remaining 60 miles home, and it ran fine. It was noisy, but I attribute most of that to the year-a-round cab being a rather clunky beast. :) ------------- Gleaner: the properly engineered and built combine. If you need parts for your Gleaner, we are parting out A's through L2's, so we may be able to help. |
Posted By: GM Guy
Date Posted: 21 Mar 2017 at 11:22pm
|
Also, if the rear end is very low, will the transmission oil tend to push past the seal between the pump sections and fill the rear end? tranny was full when the tractor first headed out, and was also full post fitting failure, but 1 day later it was a few gallons low.
------------- Gleaner: the properly engineered and built combine. If you need parts for your Gleaner, we are parting out A's through L2's, so we may be able to help. |