Started taking the 931B apart...

Anonymous-0

Well-known Member
I didn't get as much rain as I thought so started
taking the Cat apart Sunday. A friend brought his
pressure washer out and I cleaned what I could. I
couldn't get at the back under the battery very
good because to take the back panel off, I need to
disconnect the hyd. lines for the backhoe. Why
couldn't there be slots so it can slide up over
the lines...Arg! I loosened the lines and oil ran
out enough I figured it might drain the hyd. tank
so I pumped the oil out of the hyd. tank.

I let it dry for a bit, then moved it about 20'
where I could work on it before I drained the hyd.
oil. Does a right brake turn but I noticed the
right steering valve still leaks at the back cap
after I tightened it? Can't remember if it uses an
O-ring or a gasket, I think an O-ring. Should I be
taking it back to the place that rebuilt it? It is
also obvious someone has been into the steering
clutch's and final drive compartments before. Gobs
of clear silicone on the right and final drive
covers and some kind of white caulk like stuff on
the left cover. I need a pressure washer again
because there was a lot dirt at the back. I got a
copy of the procedure to remove the steering
clutches but I'm going to see if the shop can also
send me a copy of the procedure to remove the fuel
and hyd. tanks. Hopefully they can just be
loosened but I don't know what all holds them on.
In the procedure for removing the clutches it
shows how to take individual components apart. I
don't know if these have to be taken apart or it's
optional if you want to fix them yourself? I think
I'd feel better having them checked by an
experienced shop although it's not cheap. The
other thought I have since I'll have it all apart
is to have both sides checked out and fix what
ever needs fixing. Is this a dumb idea to spend
even more money or is worthwhile when I have it so
torn apart? The only good thing is it's at a good
height to work on. Bob, when are you coming to
Alberta again? Have I got a job for you. LoL
 
Glad to hear you've finally had a chance to get into it, at the same time I"m sorry to hear you had to go into it so deep. That said, one thing I always tell my customers is that when you get so far into a repair, there are things that ought to be done while there. At the moment I've got a D6 I've got to go in to replace the brakes. While there the steering clutches are going to be checked, and gone through if needed. Given that they have to come out to get the brakes out, it doesn't make sense to do the job halfway now and have to go back in later, at twice the cost. True I love job security, but I hate to make it happen by being slack.

In your case, when your doing the work yourself, you might get away with not doing the clutches if the stack height is within specs. Now if you plan to use it a lot, and the stack height is close to being worn out, then it would be worth your time to do them while there. By the same token, if you"ve got over half of the life left, then you might be good just letting them go, and they"ll be good for quite a few years to come.

As far as taking them apart, that typically requires a press, and a "special tool" (ie- a plate with holes in the right places) to get them apart safely. Without the right stuff, or the capability to make the right pieces, you"d be better off taking them to someone that has the correct tools.

Parts wise, I think I have posted this link before, but Offroad Equipment Parts in Tenn has great prices on both aftermarket, as well as OEM CAT parts.

Good luck.
Off Road Equipment
 
The procedure was showing how to take apart the levers and shafts in assemblies after they're out. It seemed odd to have it in the middle of the procedure for taking the clutches out as a unit.
 
Have a look at both sides, the hoe makes it hard to get in there. Not coming out this year Dave.
Later Bob
 
I took the hoe off as soon as I got the starter back in. The only thing the hoe would be good for is lifting the machine up but I have a 20 ton jack. Now for putting the track frames and tracks on, the hoe makes it pretty easy.
 

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