I wouldn't doubt it. I wonder if they used red locktite. I did try using a heat gun on the pump this morning but after about 3 minutes of applying heat there was no noticeable change so I gave up, thinking it would take forever to heat up all the metal and fluids that are in or attached to the pump. Maybe I should give that another go for a longer time. Hopefully they didn't use something permanent and then sell it before the problem returned.
Bobcat 763 Help
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I wouldn't doubt it. I wonder if they used red locktite. I did try using a heat gun on the pump this morning but after about 3 minutes of applying heat there was no noticeable change so I gave up, thinking it would take forever to heat up all the metal and fluids that are in or attached to the pump. Maybe I should give that another go for a longer time. Hopefully they didn't use something permanent and then sell it before the problem returned.
laurencen
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- Bobcat Toolcat 5600T Kioti CK20, Cat D2 dozer, Cat 420 tractor loader, Deer 644E loader, Bobcat E32 mini and Bobcat 590 skidsteer, Toro Groundsmaster 325D
not sure a heat gun will do much, any way you look at it they nut and fitting needs to come off, its a possibility the nut was tightened so much it fractured the elbow, the issue with the way you used the impact its not fully acting on the nut as it needs to, can you get a hammer wrench in? they are heavy short wrenches designed to be hit with a hammer, with the pipe off the elbow you mag be able to use a ring wrench, the dealer has all the tools, we made lots over the years fixing the machines
if you have the electronic service manual it will list the wrenches used
if you have the electronic service manual it will list the wrenches used
I thought about the impact wrench last night and also thought it wasn't working properly, being that it was offset. If I could get the elbow off then I could get a socket on the jam nut and use the impact properly but I can't get the elbow to break free. I'm going to see if I can get a box wrench over the elbow and onto the nut. If so, then I might be able to get a second open end wrench on the elbow and try turning both at the same time, with a little help from my SIL. Thanks for the tip. I'll also see if I can find the wrenches you mention, in my expired service manual. I might be able to see it in the parts that aren't whited out.
laurencen
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they look like this
bigdeano
Platinum Member
If you can't turn both the nut and the fitting at the same time, you may have to cut the nut with a chisel. Seems like it would be a lot easier to buy a new elbow with the nut than go thru all this hassle. Be careful to not cut too deep.
I googled hammer wrench after seeing your post. Not sure if I could find one of those around these parts. Would likely have to order one. I'm going to try one more thing first though. I'm going to try making a hex impact wrench that will fit over the bend and with the drive hole centered over the nut. That way I can use the impact wrench with it properly aligned. It will be while before I get back to this though. I'm heading out with my son and grandson to a motocross race in Calgary. My grandson is 7 years old and an awesome rider. He has won first place in several series in his first year of racing. He has something like 50 trophies so far, going into his second season. Should be a fun boys weekend out.
I don't really care if the nut or bend get damaged. I suspect I will have to get a new one anyways. I was in the local town today and looked at a similar fitting. It was an ORB fitting, which I believe is the same concept and that has shed some light on how this fitting is put together. The bend and the nut are a single fitting, just in 2 pieces.
Cutting the nut may be a good approach, as long as this is an ORFS fitting and not an ORB fitting. I would need to be absolutely sure before cutting the nut because if it is an ORB then it wouldn't help and I would have another problem to add to the heap. I will double check with the dealer before going ahead with that approach and thanks for the suggestion.
laurencen
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you enjoy the weekend sounds like a fun time, if you visit the local dealer they will or should have one of those fittings, look and see how its put together, worst case buy it and if the other one comes off take it back
the impact does little if offset, at this point I would be using a chisel to turn the nut and if not turning cut thro it to turn the fitting
FINALLY!!!!.
The Bobcat dealer called back and suggested I get the part from a hydraulic supply place close to their location because they would have it in stock and for less money. They were right, the fitting was only $7. In the end I had to make another special tool to get the fitting off. Even with this it was darn near impossible to get the special socket over the end of the fitting and onto the jam nut. There were too many things in the way, the fuel fill hose, the fuel tank vent hose and the mounting brackets for the hydraulic pump, to name a few. I eventually managed to get the socket onto the jam nut and then get the impact wrench onto the end of the socket but it was still hard to get the jam nut to break. At first I thought the impact wasn't going to do the job either but after about 5 seconds it started to move. What a major PITA this was but my stubbornness paid off.
Here is a pic of the special tools I made and the fitting after removal. Turns out the O ring was damaged and the jam nut was jammed so tight that it wouldn't turn by itself. The jam nut and fitting turned together.
The Bobcat dealer called back and suggested I get the part from a hydraulic supply place close to their location because they would have it in stock and for less money. They were right, the fitting was only $7. In the end I had to make another special tool to get the fitting off. Even with this it was darn near impossible to get the special socket over the end of the fitting and onto the jam nut. There were too many things in the way, the fuel fill hose, the fuel tank vent hose and the mounting brackets for the hydraulic pump, to name a few. I eventually managed to get the socket onto the jam nut and then get the impact wrench onto the end of the socket but it was still hard to get the jam nut to break. At first I thought the impact wasn't going to do the job either but after about 5 seconds it started to move. What a major PITA this was but my stubbornness paid off.
Here is a pic of the special tools I made and the fitting after removal. Turns out the O ring was damaged and the jam nut was jammed so tight that it wouldn't turn by itself. The jam nut and fitting turned together.
bigdeano
Platinum Member
Nice job making that socket. Did you cut the hex with a torch? I've done that a few times. Glad you got it out.
