7060
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=27025
Printed Date: 27 Feb 2025 at 7:35am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 7060
Posted By: slims75
Subject: 7060
Date Posted: 09 Mar 2011 at 2:31pm
| Have a customer with a 7060 that is complaining of low horse power. Dyno'd @ 100 HP. Check and re-set injectors, rebuilt pump, checked compression, set valves. Now it Dyno'd at 110 HP. Found intake gasket to be blown, fixed that and now at 115 HP. Have took intake hose off of turbo to eliminate inlet restriction and muffler off to eliminate exhaust restriction, fuel flow is fine. Has 14lbs of boost under full load. Turbo turns fine and has no play but that is what I am leaning to because of the low boost. Also there is very little smoke at full load which is very abnormal for these tractors. Anybody have any other suggestions. |
Replies:
Posted By: chllngr528
Date Posted: 09 Mar 2011 at 3:00pm
| If you had a turbo problem she would be bleching black smoke. What's max boost suppose to be? |
Posted By: slims75
Date Posted: 09 Mar 2011 at 4:54pm
| I think it is supposed to be around 18 @ rated and max load, I agree about the smoke, but it has got me stumped and the turbo is about all that is left. The tractor starts good and sounds good also. |
Posted By: Dave in il
Date Posted: 09 Mar 2011 at 5:06pm
| Can you check fuel delivery from the tank? We had a 7060 with a plastic fuel line from the tank that had a similar problem, we replaced it with a rubber hose line with a much larger inside diameter and it made a new tractor out of it. |
Posted By: Denis in MI
Date Posted: 09 Mar 2011 at 5:12pm
|
have you checked the type of fuel they are using a friend of mine lost a lot of power in one of his tractors when he ran a tank of bio diesel through it. He was pulling a 20 foot disk that he usually pulls in eighth gear at 3/4 throttle and had to drop a gear and run wide open to have enough power to run at the same speed. The only thing that changed was the type of fuel, when he filled it the next day he used regular diesel and had all of his power back. I also noticed this with a diesel pickup, it had been filled with bio diesel and I though it felt gutless and when I stopped to refill it during the trip I used regular diesel and it came back to life, this was a couple years ago but I have not put bio diesel in anything since.
Just my opinion,
Denis ------------- 1938 B, 1945 B, 1941 IB, 1949 C, 2 1938 WCs, 3 1950 WDs, 1951 WD, 2 1955 WD45, 1957 D-14 |
Posted By: DrAllis
Date Posted: 09 Mar 2011 at 5:15pm
| Which injectors???Bosch or AC ??? It ain't the turbo. |
Posted By: slims75
Date Posted: 09 Mar 2011 at 5:18pm
| Bosch injectors, gonna hook it up to a 5 gallon bucket of our fuel tomorrow and re-check it, it also is one of them with the electric lift pump but everything checked out on it. |
Posted By: DrAllis
Date Posted: 09 Mar 2011 at 5:22pm
| Are the Bosch tips the correct P/N ?? also I never set them higher than 3600 psi....if you're at 4000-4100 psi like the book says it will hurt HP some but not 50 hp....Turbo boost is more like 16 psi at 160 pto hp @ 60 degree air temp. |
Posted By: tbran
Date Posted: 09 Mar 2011 at 6:08pm
| We had an electric lift pump that was pumping air in the fuel, like to have never found the problem - as stated, get a CLEAN supply of diesel and bypass all filters - go directly into the back of the pump for a short check. If this fails to increase HP take the top of the pump and make sure the metering valve is contacting the smoke or torque screw -if equipped - also seeing a lot of gummed up metering valves that could be the problem. I guess also a check of the transfer pump pressure would be in order as suppose these relief could stick open as well - but not likely. Worn blades or broke spings could hurt though. |
Posted By: tbran
Date Posted: 09 Mar 2011 at 6:09pm
| We had an electric lift pump that was pumping air in the fuel, like to have never found the problem - as stated, get a CLEAN supply of diesel and bypass all filters - go directly into the back of the pump for a short check. If this fails to increase HP take the top of the pump and make sure the metering valve is contacting the smoke or torque screw -if equipped - also seeing a lot of gummed up metering valves that could be the problem. I guess also a check of the transfer pump pressure would be in order as suppose these relief could stick open as well - but not likely. Worn blades or broke spings could hurt though. |
Posted By: Amos
Date Posted: 09 Mar 2011 at 6:42pm
| You have a fuel problem, is my guess. I would say test your fuel pump on a test bench with the spec from an allis chalmers service manual, do not rely on the pump overhaul shops database as I have had two pumps set wrong by the same shop and when I took in my service manual it was quite clear why I had no power. a 210 with 104 hp and a rebuilt pump set at 71 cc, book said 87 I think, boy did it change that tractor when the pump was set to what the service manual said. It did not raise the boost pressure much, maybe two pounds. |
Posted By: MACK
Date Posted: 09 Mar 2011 at 9:01pm
| Injector lines get eroded on inside. I have saw new inj. lines bring the HP back up. MACK |
Posted By: Kcgrain
Date Posted: 10 Mar 2011 at 9:46am
| I have seen this happen on an 8050, the pump had been replaced and timed correctly to the engine, the tractor had no power, but ran fine otherwise, it turned out the front dampner had moved so the timing of the pump showed correct, but in corilation to the crankshaft it was actully off. |
Posted By: injpumpEd
Date Posted: 10 Mar 2011 at 12:56pm
------------- 210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers! |
Amos wrote:Posted By: slims75
Date Posted: 10 Mar 2011 at 3:34pm
| Finally gave up and put a different pump on it and it dyno'd perfect. so i am sending pump back to get re-checked, Thanks |
Posted By: John (C-IL)
Date Posted: 10 Mar 2011 at 3:56pm
| Thanks for reporting back, get us an update when you get the pump checked out. |