caterpillar D6H Hydralic Cylinder

[w38571]

Repacking the Blade lift Cylinders on a 6 H, removed hoses drained oil & have removed the cover (Nut) that threads onto the barrel. Cannot get the rod-piston out of the barrel. Anyone know what the next step after removing the cover ?

 

[Bob/Ont]

Think you have a vacume in the cylinder. Slack a hose on the head end.
Later Bob

 

[w38571]

Think you have a vacume in the cylinder. Slack a hose on the head end.
Later Bob

Have removed all 3 hoses at top of barrel, there seems to be a steel sleeve that is the same dia. of the barrel just below the threads at the end of the barrel. Amy suggestions of a site that shows the disassembly or diagrams.

 

[Multiracer]

I have to do mine this winter as well as the pivot points for the cylinders. So I seek some info as well.
1988 D-6H series II.

 

[Nige]

To the OP - what's your Serial Number..? I'll post up a sectioned drawing of what the cylinder looks like.

Ron, if you e-mail me I'll give you the Parts and D&A for the cylinder on yours.

 

[JeremiahSr]

The gland fits in canister tight. A sharp chisel will get it moving for you. Be carefull around threads obviously. Clean the area about 1" from start of threads....should be able to see where it will seperate.

 

[w38571]

To the OP - what's your Serial Number..? I'll post up a sectioned drawing of what the cylinder looks like.

Ron, if you e-mail me I'll give you the Parts and D&A for the cylinder on yours.

Mine is a 4RC

 

[Multiracer]

Thanks for the quick response and the detailed info Nige. Someday I hope to repay the favor.
Ron

 

[Nige]

Here's a diagram showing what the cylinder looks like inside. There is a Serial Number break at 4RC3999, this diagram applies to machine 4RC4000-Up. Your cylinder may differ slightly. I'd say most likely the gland is stuck fast in the end of the cylinder barrel.

 

[JeremiahSr]

Yea.....this pic is for a gland that screws into the barrel. His sounds like a big lock/screw/cap that screws on outside of barrel and gland just slides in. They freeze up in there pretty tight sometimes. My post above should do the trick!!

 

[Chisumtrail]

With the hoses hooked up and the rod off the ball, loosen the nut 3 or 4 turns then start dozer and push rod out.

 

[Nige]

With the hoses hooked up and the rod off the ball, loosen the nut 3 or 4 turns then start dozer and push rod out.

And have a big bucket ready to catch all the hydraulic oil that falls out. The barrel of the cylinder will be full.

Jeremiah, Do you mean this cylinder..?

 

[Multiracer]

Those are the units on my machine, the 'crown" threads on the end of the tube.
Ron

 

[JeremiahSr]

Yep....thats it!! a sharp chisel between gland and threads will knock it loose!!

 

[Chisumtrail]

No it will not, look at you picture, a few turns will not hurt anything. Did not say take the nut off!

 

[JeremiahSr]

I read his post. He already had his nut off!
Did you get it w38571 and Multiracer?