New to me 955K

[FW190D9]

One other thing to consider, this machine has had the blade on it for a real long time. In order to bottom out the rams, that blade would have to be really far below track/ground level. Also, I took a good look down the bore with a flashlight and there were no marks on the bottom end where the shaft might hit. Ill still pay close attention when I get the nuts loose.

E.

 

[FW190D9]

And the saga of "Mo" continues. Good news and bad. Went to harbor freight and bought a cheapie 1" impact gun and a ebay 3 1/8" socket. Fired it up and it zipped off the piston nuts with ease. Definitely been off before. The threaded ends were fine, no mushrooming at all. The seals looked pretty worn and there was some small slivers of tin foil like substance caught in the main bore seal. Dunno if it was trash in the system or what. Pretty sure that's why it was leaking so bad, keeping the seal lip from riding on the rod. I took pics of everything to make sure I get it all back in right and removed all the seals. Did some checking and found out the cylinders are for sure off an "L" model and not a "K" as my serial number dictates. Good thing I got the "L" parts book also. The "L" cylinders are very different than the "k". As such, the seal kits I got from CAT definitely wont fit. The cylinder heads have some wear grooves in them. Dont know if that will affect operation much. Progress! but I gotta go back to CAT parts to get the right seals.

E.

 

[FW190D9]

Difference between the "K" and "L" parts book. The one with the star in the corner is the "L" which cylinders I have. Also a pic of the trash that was caught in the main bore seal
E.

 

[AllDodge]

Good you have the parts books. I've had issues with parts but also have access to SIS. Might want to see if you can gain access from your local CAT dealer.
One of these days I'm going to need to rebuild my cylinders also.

 

[FW190D9]

Well that was easy! I was worried I wouldnt be able to get the rods back into the cylinders by myself but it turned out to be a no brainer. I suspended the rods with click straps from the loader arms and got each one into position at the opening of the cylinder, doused each piston with clean hydraulic oil and a couple of gentle taps with the BFH and they slid right in. Gave the piston heads a gentle tap and they went in far enough to get the bolts started which drew the head in the rest of the way. Added 5 gal of hydraulic oil to system and worked the air out and Voila! leak free lift cylinders! I guess Ill tackle the tilts next.

E.

 

[AllDodge]

Great, just a little love tap from the BFM

 

[kshansen]

Well that was easy! I was worried I wouldnt be able to get the rods back into the cylinders by myself but it turned out to be a no brainer.
.......................................
I guess Ill tackle the tilts next.

E.

Yea, usually about the hardest part about rebuilding Cat cylinders is getting the nuts off that hold the piston on. Well unless you are removing the complete cylinder say on a 980G and the lower pins have not been removed in ten years! 30 ton jack pushing and a 50 ton pulling and still took lots of heat!

 

[freehole]

NEWBIE TO SITE im looking to replace transmission oil cooler on 955l . So a what has to come off to get it out be awesome! just bought everything works , but been sitting,so im fixing as i go .

 

[FW190D9]

If youre talking about the torque converter cooler, Its on the side of the engine on mine. Pretty simple to get it off and inspect it. Its probably clogged with radiator seal like mine was.
Evan Q.

 

[FW190D9]

Worked Mo around the compound a bit last week and blew the seal on one of the tilt cylinders. Time to rebuild them now too. Both came out pretty easy. Supported by the forks on the Kubota and yanked em out with a chain pulled by my hunting truck.
E.

 

[DMiller]

Good old Old iron, guarantee for something to do everyday!

 

[freehole]

If youre talking about the torque converter cooler, Its on the side of the engine on mine. Pretty simple to get it off and inspect it. Its probably clogged with radiator seal like mine was.
Evan Q.

its transmission cooler on side of radiator about 5in wide as tall as radiator.

 

[FW190D9]

If your machine is a 955L then yes, that is the torque converter cooler. I dont think any of the 955s have an actual transmission cooler. The torque converter cooler on your machine is a 5" wide radiator as tall as the engine radiator. Its a bear to take off but can be done. I think youll have to remove the fan, fan shrouds and front grills to access the mount bolts. My early K model had that cooler installed although it was plugged off and not in use. I have the old style cooler on the side of the engine.

 

[freehole]

its transmission cooler on side of radiator about 5in wide as tall as radiator.

If your machine is a 955L then yes, that is the torque converter cooler. I dont think any of the 955s have an actual transmission cooler. The torque converter cooler on your machine is a 5" wide radiator as tall as the engine radiator. Its a bear to take off but can be done. I think youll have to remove the fan, fan shrouds and front grills to access the mount bolts. My early K model had that cooler installed although it was plugged off and not in use. I have the old style cooler on the side of the engine.

TY that sucks , but at least now i know .

 

[Metalman 55]

Perhaps you are referring to a cooler like this on the side of the radiator like on our D6C Dozer?
Is yours leaking oil? On our D6 the cooler was not working well (allowing it to run hot), so we pulled it off & straightened all the fins & I believe flushed it. It worked much better after that.

It seems to me that on the D6 that the cooler either was not still available or the price was very high. Ours was not leaking.

 

[DMiller]

That would be a definite plus on my old machine. The torque cooler is engine style on mine, engine heats as the torque converter heats, old ongoing issue with the old Allis machines.

 

[FW190D9]

Metalman, Yeah, the Torque cooler on the L model is just like that one on the D6C. My machine has a weird mix of K and L parts on it so I bought the parts books for both. For example, the Tilt cylinders I'm rebuilding right now correlate to the L model, not the K which my Serial suggests. Big differences between the 2 as the L model piston heads have 3 seals and the K model heads only have 2. I'm beginning to suspect poor old Mo is kinda a Frankenstein. Crap, did I say that out loud?
E.

 

[FW190D9]

Got the 2 tilt cylinders rebuilt. The seals were toast, came out in pieces. Blasted the piston heads and thoroughly cleaned and painted everything before installing new CAT two part seals and new wipers. Ready to get Mo back in business .

Evan Q.

 

[Nige]

Just got round to reading this thread. A comment about the epoxy mixercups. Cat don’t sell chemical products any more (stopped in 2014 iirc) but Loctite do, your local Cat dealer should have a pdf document that gives the Loctite reference for all the chemical products. I have plenty of recent experience of that epoxy and it does work very well.

 

[FW190D9]

Thanks for stopping in Nige! I hope my humble wrenching on the ol 955 lives up to your standards!
Evan Q.