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7060 low power

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ryan(IN) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ryan(IN) Quote  Post ReplyReply Direct Link To This Post Topic: 7060 low power
    Posted: 18 Apr 2015 at 7:32pm
One of our 7060s is only putting out 125-130 at the pto. Dynoed 140 before we found it had low compression on cylinders 5 and 6. Took the head off and found the head gasket blown (has been 8-9 years since it was overhauled last). Sent the head off and it checked out ok except for some valves that they replaced as they didn't like how they looked. Sleeve standout is within spec. (motor has had sleeve problems before due to bad machine work). Got it all put back together again today and it seems to have more power and sounds a lot better. valves set at .015" hot. Dynoed only 125-130 after all this. Before we took the head off the pump and injectors were sent off, they checked out fine. Only getting 10 psi at the manifold when pulled down on the dyno, and when pulled past rated rpm still only 10 psi. Turbo was replaced two years ago, this is about when the power problems started but just thought we had boost leaks. I don't know what the problem could be, and has our local allis mechanic stumped. Any ideas or help will be greatly appreciated!
ryan
1984 8070 FWA,1979 7060,1975 7040,1971 190,1960 D-17D,1957 D-14, 196? D-19G, 1975 5040,1971? 160,1994 R62
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Orange Blood View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Orange Blood Quote  Post ReplyReply Direct Link To This Post Posted: 18 Apr 2015 at 8:41pm
Have you run a compression check on it, since you put everything back together?  What does the blowby at breather tube look like when running?  What smoke are you getting out the stack, under load?
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
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 18 Apr 2015 at 9:35pm
10 psi of intake manifold boost (30 psi gauge) with heavier than normal smoke would indicate a boost leak somewhere. 10 psi boost with normal to faint smoke would indicate lack of fuel delivery.
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MACK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 18 Apr 2015 at 9:35pm
Have seen this many times. Replace pump head, injector lines erode out on inside, they get smaller on inside where nuts crimp them down after being taken off and on. If it has Boisch injectors the return line goes on valve cover side. Air leak in fuel line from tank to filter. Restriction in fuel line (put vacume gauge with a clear line ahead of filter). After market air filters. Bird nest between precleaner and filter. Air check pump timing mark. Make sure pulleys have not sliped in hub.
 I'm sure there are other things I have found, but have forgotten.  MACK
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ryan(IN) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ryan(IN) Quote  Post ReplyReply Direct Link To This Post Posted: 18 Apr 2015 at 11:01pm
Have not ran a compression test since put altogether. smoke while loaded down was normal to me but not to excessive. It has the allis injectors so they aren't installed wrong. Puts a little blow by out but not a lot. When pulled down past rated rpm, it did dyno 150. Will have to check between the pre cleaner and air filter. Will also check the dampner pulley to see if it slipped. Could it be a timing issue?

What do you mean by after market air filters Mack? I believe its running a napa filter and was new before it was dynoed the first time.
ryan
1984 8070 FWA,1979 7060,1975 7040,1971 190,1960 D-17D,1957 D-14, 196? D-19G, 1975 5040,1971? 160,1994 R62
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ryan(IN) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ryan(IN) Quote  Post ReplyReply Direct Link To This Post Posted: 19 Apr 2015 at 8:27pm
Did not get a chance to look at the tractor today since its at the mechanics shop now. Hoping to figure the problem out soon. Will make spring a bit hectic with a tractor down.

Edited by ryan(IN) - 19 Apr 2015 at 8:28pm
ryan
1984 8070 FWA,1979 7060,1975 7040,1971 190,1960 D-17D,1957 D-14, 196? D-19G, 1975 5040,1971? 160,1994 R62
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MACK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 19 Apr 2015 at 10:14pm

Worked on a 7060 that would fall on it's face when a load hit. After makeing some checks found rubber hose out of air cleaner was sucking togather. He had replaced air filter from brand X filter from auto store, replaced it with Allis filter and no more problem.  MACK

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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 20 Apr 2015 at 9:03am
Another GREAT example of using a non-OEM filter and having a problem directly related to that non-OEM filter !!!!
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injpumpEd View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote injpumpEd Quote  Post ReplyReply Direct Link To This Post Posted: 20 Apr 2015 at 9:17am
this sounds like the fuel system has a restriction to the injection pump. Been a very common thing this spring!
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!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 20 Apr 2015 at 2:20pm
Do you leave biodiesel in for setting over winter?That craps is only okay if using daily.
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ryan(IN) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ryan(IN) Quote  Post ReplyReply Direct Link To This Post Posted: 20 Apr 2015 at 2:47pm
No bio diesel has been ran through so that can be ruled out. Brand new agco fuel filter was put on before being dynoed the first time. Will check about a fuel restriction.
ryan
1984 8070 FWA,1979 7060,1975 7040,1971 190,1960 D-17D,1957 D-14, 196? D-19G, 1975 5040,1971? 160,1994 R62
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 20 Apr 2015 at 3:01pm
Are you sure your high idle is clear up to specs?? like 1130 to 1140 on the PTO speed??
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Post Options Post Options   Thanks (0) Thanks(0)   Quote injpumpEd Quote  Post ReplyReply Direct Link To This Post Posted: 21 Apr 2015 at 7:43am
Blow through all the lines. Somewhere, you have a fuel flow restriction. Priming pump check valves also catch debris and plug up flow. 
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!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tbran Quote  Post ReplyReply Direct Link To This Post Posted: 21 Apr 2015 at 12:55pm
IF this unit has the plug on type rectangular filter, remove it and see if it has a ROLL PIN in the base for a locator - if so, pull it out - if driven in too far it will restrict flow. Check for crud behind the pin.. There was a service bulletin about this many moons ago. The filter does not need the roll pin.
When told "it's not the money,it's the principle", remember, it's always the money..
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Carl(NWWI) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Carl(NWWI) Quote  Post ReplyReply Direct Link To This Post Posted: 21 Apr 2015 at 12:58pm
Originally posted by DrAllis DrAllis wrote:

Another GREAT example of using a non-OEM filter and having a problem directly related to that non-OEM filter !!!!


Lol! I was just thinking the exact same thing!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Amos Quote  Post ReplyReply Direct Link To This Post Posted: 21 Apr 2015 at 9:14pm
I had a similar problem with my 210 after overhauling it...turned out the injection pump shop set the pump to 70cc fuel delivery...don't remember what the service manual says but when I dynoed it she had just 102hp...when I took in the repair bill and the pump and the service manual...well...it runs a lot better now. It could almost make 7psi boost before getting the pump set right, now it will easily make 14 psi. Same tractor when I bought it made 15 psi easy any day, smoked like a chimney, and would not start worth a hoot on a nice day...timing was one tooth off, retarded...it just has bad luck with that injection pump...lol

Edited by Amos - 21 Apr 2015 at 9:14pm
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ryan(IN) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ryan(IN) Quote  Post ReplyReply Direct Link To This Post Posted: 23 Apr 2015 at 9:34pm
I think we found the problem. Mechanic had a cranked up injection pump to put on to test and see if we could get more horsepower out of it. Got 160-170 out of it with maxed and pretty hot pump and figure that it should have been at least 200 with that much fuel. Boost only increased to 12. 8-9 years ago when we overhauled it dad did not have the cam ground. Well the cam is SHOT(the lobes almost have a point to them) and the lifters are wore, dad helped the guy take it out tonight. We are pretty sure this is the problem. Thanks for all the replies and thoughts on what it could be!! We were getting pretty discouraged here a couple of days ago and it really helped having some extra guidance from you guys.
ryan
1984 8070 FWA,1979 7060,1975 7040,1971 190,1960 D-17D,1957 D-14, 196? D-19G, 1975 5040,1971? 160,1994 R62
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tbran Quote  Post ReplyReply Direct Link To This Post Posted: 24 Apr 2015 at 12:51pm
using a diesel oil like rotella ?   unusual...
When told "it's not the money,it's the principle", remember, it's always the money..
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ryan(IN) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ryan(IN) Quote  Post ReplyReply Direct Link To This Post Posted: 24 Apr 2015 at 2:47pm
We use Cenpeco 15w-40 diesel oil and have ever since it was overhauled 8-9 years ago.
ryan
1984 8070 FWA,1979 7060,1975 7040,1971 190,1960 D-17D,1957 D-14, 196? D-19G, 1975 5040,1971? 160,1994 R62
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