Bobcat 763 Help

[oldnslo]

Are you talking about the jam nut that locks the fitting into the pump? If yes I would be very surprised if left hand thread. This nut is just to lock the fitting at the desired orientation and should not be super tight. Possible someone used locktite but they shouldn稚 on that style fitting. Try an impact but don稚 go to crazy. Can you put a vice grip on the shank and keep some torque on the nut while using the impact. I have had some success in breaking stubborn nuts and bolts loose this way.

Good luck and remember

Stubbornness will overcome most obstacles ;-)

 

[Hilbilly]

I didn't realize that was a jam nut and tried turning the bend counterclockwise and when that didn't work I tried turning the jam nut (but not holding the shank / bend). Earlier I tried using the impact, on low setting on the jam nut with no luck. I will give the impact another go tomorrow, while holding the shank / bend. I think that could be the solution and thanks again for helping out.

Sometimes my stubbornness gets me into more trouble than if I'd given up. In this case I'm close to giving up and taking it to the dealer but that will be another PITA. I would have to dig out the trailer that is buried under 2 ft of snow, go to town to get trailer insurance (30 minute trip each way), make sure the brakes are working since the trailer hasn't been used in a few years, load the SS and take it into the city which is 1 hr and 15 minutes away. There's 2 days shot and 2 trips to the city by the time they do the work and I get to pick it up. Sometimes living in the country has it downside.

 

[oldnslo]

Don稚 worry about holding the elbow. If it turns with the nut great. Take the fitting out of the pump and worry about getting the nut loose.

And yes one of my best friends claims that stubbornness will always overcome common sense

There have been times when I wished I could have proven him wrong

 

[laurencen]

the nut is a jamb nut, it threads on the fitting, sometimes it helps to turn the nut with the fitting to get it to loosen,

 

[Hilbilly]

the nut is a jamb nut, it threads on the fitting, sometimes it helps to turn the nut with the fitting to get it to loosen,

Maybe that's the ticket. I'd need some help to do that or I would need to grow another arm.:laughing: If I can't get it with the impact I will have to wait until my son in law has a few minutes to give me a hand but that could be a while.

 

[Hilbilly]

I give up. I tried it one more time after a further soak with penetrating fluid and the impact as high as I dare but still no movement. The torque was enough to deform the 3/8" thick mild steel crow foot wrench I made and I don't want to damage the jam nut any further. So I will have to make an appointment with the dealer to get this done. Maybe after most of the snow is gone so I don't have as much work to get the trailer out.

 

[laurencen]

Hilbilly, never had one this tight, both the nut and fitting turn anti clockwise, has some tight and usually having a wrench on both nut and fitting does the trick, you have little movement but all it needs is a few degrees to loosen it up

if the dealer is decent they will advise, my dealer has borrowed tools overnight

 

[laurencen]

is the leak coming from the jamb nut and block, there is a odd washer with a O ring, your picture shows the area clean, I have no idea how the ring would leak with the nut that tight

 

[Hilbilly]

laurencen, anti clockwise it the direction I am trying but no success. I'm not able to get a wrench on the bend plus the crow foot wrench on the jam nut at the same time. The crow foot bolt interferes with where the open end wrench wants to be. Even if I could get both wrenches on at the same time I wouldn't be able to apply enough pressure to both wrenches at the same time. It's such an awkward place to get into.

I cleaned off the area where the leak was so I could see where it started to come out when running. It appears to be coming from either between the jamb nut and the bend or from the between the jam nut and the pump housing on the bottom. I didn't see it until I used a mirror to look at it. There is a very definite leak here. When I run the SS and use the hydraulics, the leak first starts as a slow drip and then escalates into a fast drip followed by intermittent slow streams (like a run of drips that are attached) then back to a few drips and back to the stream. It is hard to believe there could be a leak there when these things are so tight but there is.

Based on your suggestion I think I'll send an email to the Bobcat dealer showing them a pic of the fitting and see what they suggest. The awesome parts guy is back and he is very helpful.

 

[laurencen]

thats stupid tight, usually the nuts are just tight enough to stop the elbow from turning, wonder if it was a issue for the last owner and they used locktite or similar to seal it up