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Eric B 
Orange Level
Joined: 09 Feb 2012
Location: British Columbi
Points: 890
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 Posted: 17 Jun 2015 at 12:44am |
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If the oil that is leaking is from the fwd rev transmission it's very likely from the oil pump that is driven by the converter. If the flex plate that the converter is mounted to is cracked then the converter starts to wobble...then the converter neck that propels the fwd rev trans pump gets damaged, the seal starts leaking and once the pump is no longer driven you have no pressure and no power to the wheels. You described a noise in the driveline...this would be my first suspicion.
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Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal!
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Dgrader
Orange Level
Joined: 17 Jan 2015
Location: Newton,IL
Points: 1037
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Posted: 16 Jun 2015 at 7:51pm |
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The dipstick your talkin about is for the torque converter and it takes atf fluid. I don't know the quantity as I've never changed it and couldn't find it in the service book. The plug to check the transmission is on the right side if your lookin at it from the back of the tractor. Ours has 90 wt. in it. Sounds like your problem is in the torque converter. I just changed the transmission in ours and it's not a bad job.
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Ya cain't fix stupid.
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FarmerJoeVT
Silver Level
Joined: 19 Oct 2014
Location: Vermont
Points: 58
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Posted: 16 Jun 2015 at 7:18pm |
I am hoping someone might be able to help me figure out what is going on with my AC 715 Backhoe. I recently ran her out of gas and when I restarted her after bleeding the lines the starter went and needed to replaced. While waiting for it to come in the mail, I replaced all the filters (oil & fuel), did a oil change, and put some atf fluid in what I believe is the dip stick on the left side of the tractor for the transmission since it was low. When the starter arrived, I installed it and it started up. However it now does not want to go forward or reverse, when it was previously working fine. I had this happen once before and a buddy of mine jump in the cab and pulled up on the differential handle and then it worked. I have repeated this too many time to count without success. I have also put links before to show you what is going on via a couple youtube videos I created for you to see first hand. Any and all help is greatly appreciated.
https://youtu.be/tKQHVm5iqRE https://youtu.be/mljDW8ihbXE
Very respectfully,
Joe
Edited by FarmerJoeVT - 16 Jun 2015 at 7:20pm
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FarmerJoeVT
Silver Level
Joined: 19 Oct 2014
Location: Vermont
Points: 58
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Posted: 12 Jun 2015 at 1:07pm |
Thank you Coke-in-MN. But before we had a
chance to troubleshoot it, we found a pretty big leak from the housing that directly
follows the oil pan. So we had to take the oil pain off to
figure out how to seal the leak, it appears to be a bad gasket. I have the
parts and maintenance manual for the machine, but they are not very helpful for
a DYI-er like myself with little to no experience working on cars or machinery.
So I sincerely appreciate any help and advice you can give me.
On that note, before the
leak happened I put ATF fluid in the dip stick located on the left side of the
machine above the crank starter. Can you verify what this is, type of fluid, and the amount of fluid this
requires. I've read a variety of information that is quite the range. I
believe that this is the transmission fluid dip stick, but I am not entirely
sure.
Additionally, could you
explain to me what the different parts are from the front of the crankshaft pulley
back. From what I have been able to gather it starts at the crankshaft pulley goes
into the crankshaft, which then goes into the transmission?, then the gear box,
then the drive train, to the differential, and then the brakes (which I also
need to figure how to change or fix because they are horrible but still work),
then back to the backhoe. Also any information on fluid
types, amounts, and where to check them/add them.
We are desperate to get
it working beyond running for 5 minutes. We've already replaced the starter,
oil/fuel filters, and a flat tire. Any and all wisdom you can pass our way is
greatly appreciated.
Very respectfully,
Joe
On that note, before the leak happened I put ATF fluid in the tip stick location on the left side of the machine above the crankstarter. Can you verify the amount of fluid this requires. I've read a variety of people post that state quite the range. I believe that this is the transmission fluid dip stick, but I am not entirely sure. Additionally, could you explain to me what the different parts are from the front crankshaft pulley back. From what I have been able to gather is that the crankshaft pulley goes into the crankshaft, which then goes into the transmission?, then the gear box, then the drive train, to the differential, and then the brakes (which I also need to figure how to change or fix because they are horrible but still work), then back backhoe. Any information on fluid types, amounts, and where to check them/add them. We are desperate to get it working beyond running for 5 minutes. We've already replaced the starter, oil/fuel filters, and a flat tire. Any and all wisdom you can pass our way is greatly appreciated.
Very respectfully,
Joe
Edited by FarmerJoeVT - 12 Jun 2015 at 1:12pm
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Coke-in-MN
Orange Level Access
Joined: 12 Sep 2009
Location: Afton MN
Points: 41220
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Posted: 10 Jun 2015 at 10:17pm |
the floating lever is the differential lock for rear , check the valve linkage on the far left pedal that is a relief to transmission hydraulics next is to do pressure check on system ,
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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FarmerJoeVT
Silver Level
Joined: 19 Oct 2014
Location: Vermont
Points: 58
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Posted: 07 Jun 2015 at 9:33pm |
Update: I was able to use her in the fall just fine before getting a flat tire. Replaced the tire, oil & fuel filters, and bad pulley. It ran fine before I ran her out of fuel again (epic failure). :) Bled the lines and started her up again. Drove her around for about 20 minutes and as soon as I put her under load, it chugged out and died. When I tried to restart it there was a terrible sound coming from the starter, which I just replaced. Now she will start fine, however will not drive forward or reverse. I've lifted it off the ground completely with the stabilizers and the front bucket and still nothing. We had this problem once before and a friend literally reached down and pulled up on the floating lever next to the seat and it engaged the wheels and ran fine. This is something I have attempted numerous times now, with out success. Anyone have any ideas?
Very respectfully, Joe
Edited by FarmerJoeVT - 07 Jun 2015 at 9:35pm
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Cal
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Joined: 14 Sep 2009
Location: East Woodstock
Points: 172
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Posted: 28 Dec 2014 at 5:40pm |
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You eay after running acouple hrs. it works. Sounds like a frozen filter or water "ice" in a low spot. Cal in Ct
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Eric B
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Joined: 09 Feb 2012
Location: British Columbi
Points: 890
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Posted: 28 Nov 2014 at 1:16pm |
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The fwd reverser in my 816 (much the same as the 715) had taken in water in the previous ownership and it would act a lot like you're describing. After lots of flushing and a new oil pump (old pump was badly scored and the seal was leaking) it worked like normal. On another machine with the same Borg Warner fwd reverser the flex plate between the flywheel and the converter cracked up enough to make the converter wobble to the point that the converter would no longer pull the pump. This would give slight movements to the wheels but not enough to operate the machine.
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Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal!
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
Points: 41220
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Posted: 27 Nov 2014 at 7:28am |
Water pump, or alternator are the only outside things , belt could be bad also . Now behind the front cover are a few things but squeak from there / Adding extra lights could be putting a higher load on alternator causing belt to slip.
Edited by Coke-in-MN - 27 Nov 2014 at 7:30am
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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DiyDave
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Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 50644
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Posted: 14 Nov 2014 at 6:14pm |
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Try a new fan belt, and check the gen/alternator.
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FarmerJoeVT
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Joined: 19 Oct 2014
Location: Vermont
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Posted: 14 Nov 2014 at 4:54pm |
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It is magically working again, not sure what has changed. But after running her for a couple hours, now I am getting a weird sound in the pulleys. Not sure if its a bad bearing or something. But its in between the engine and the radiator fan, need to isolate the sound/area. Any advice would be greatly appreciated.
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
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Posted: 13 Nov 2014 at 8:54pm |
fluid needs to be checked with engine running as pump to fill torque converter need to operate .
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
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Posted: 13 Nov 2014 at 9:18am |
fluid level in fwd rev section of clutch pack . low pressure , worn clutches , bad o ring internally , plugged filter , pedal linkage to floor pedal out of adjustment , When the unit is in neutral and wheels off the ground there is enough torque transmitted through unit to turn rear wheels through fwd rev unit .
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
"Challenges are what make life interesting; overcoming them is what makes life meaningful."
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pinball
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Joined: 28 May 2014
Location: missouriu
Points: 5979
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Posted: 13 Nov 2014 at 5:21am |
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If your back end turns freely when there off the ground and there is no noises then it sounds to me as your clutch has gone bad or possible linkage problem. just my thought.
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FarmerJoeVT
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Joined: 19 Oct 2014
Location: Vermont
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Posted: 10 Nov 2014 at 10:21pm |
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I am having a problem with my Allis Chalmers 715 stopped moving, forward or backward. No loud noises. I was wondering if anyone knows a solution. My Allis Chalmer 715 Backhoe/Loader just randomly started to do this right after changing the fuel filters and installing off road lighting. Hoping you have some points of wisdom or help that you can share with me. I bought it used and it has been running fine up until this issue. The drive train spins and when i lift the back tires off the ground they spin as well. However when it is on the ground it does not want to move. Any help you can provide me would be greatly appreciated.
Joe
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