743 Bobcat U-Joint Lube

antfarmer2 said:

First practice your cussing skills then lift up the cab put some padding on the pump reach in on the right side and feel for the zerks turn the engin from the back I used the spline comming off the back with a pipe wrench and a rag to keep from nicking up the shaft once you have it lined up mark the pully for next time do not have someone turn it when your hand is in there get your grease gun with two or three foot of hose and cuss some more there are three zerks

Click to expand...

antfarmer2 said:

Chain the cab back good can ruin your day

Click to expand...

antfarmer2 said:

That would be the right side while you laying on your belly on the pump cussing

Click to expand...

antfarmer2 said:

First practice your cussing skills then lift up the cab put some padding on the pump reach in on the right side and feel for the zerks turn the engin from the back I used the spline comming off the back with a pipe wrench and a rag to keep from nicking up the shaft once you have it lined up mark the pully for next time do not have someone turn it when your hand is in there get your grease gun with two or three foot of hose and cuss some more there are three zerks

Click to expand...

warrenoliver said:

Now I am confused. Are you saying the Bobcat's right side (my left if I am prone) or are you saying my right side when I am lying prone on the Bobcat pump?

Click to expand...

antfarmer2 said:

Lay on your belly on the pump use your right hand and give it a reach around

Click to expand...

brdgbldr said:

There are actually 2 holes that you can reach the u-joints from on the right side as you are laying on the pump. Unless you have a really skinny arm reach around as far right as you can and then back to the left to the u-joint. The hardest part is getting the zerks in the proper position once you get that done you can get the grease gun extension hose on by feel. I've found that the grease gun extension hose gets so greasy that keeping pressure on it to keep it on the zerk is near impossible especially if you are trying to get tough old grease out of the u-joint. I've had to put hose clamps near the end of the extension so I have something to push against. Good luck

Click to expand...

[email protected] said:

i layed on the pump and reached around while i had my father work the grease gun. i can't imagine doing it alone.

Click to expand...

wbecker said:

Tom, You might want to consider pulling the engine and looking at the U joint if you have no records of the maintenance on the machine. My 743B had 3300 hours, I had to pull the engine due to a hydraulic leak from one of the steel lines in front of the engine. The U joint would have self destructed before long, I'll try to add a link to a picture of it, hope it works. http://i921.photobucket.com/albums/ad52/wbecker319/Bobcat/IMG_9811Copy.jpg

Click to expand...

antfarmer2 said:

Good advice a hundred bucks and a half a day if it goes out can cost more than the cat is worth

Click to expand...

wbecker said:

Antfarmer, were you able to see the picture? Ive been trying to figure out how to do that, first try so like to know if it worked. Bill B

Click to expand...