Bobcat 610 Cylinder rebuild help

[jamtuc]

Bought a 610 the tilt cyl was....is leaking. Easy rebuild right? Wrong...thats my case anyway. Cannot get the head to turn loose. It is Aluminium and I havent been able to budge it yet. Any suggestions?

Thanks

 

[kennyd]

Bought a 610 the tilt cyl was....is leaking. Easy rebuild right? Wrong...thats my case anyway. Cannot get the head to turn loose. It is Aluminium and I havent been able to budge it yet. Any suggestions?

Thanks

Post a picture if you can, there are MANY different ways cylinders come apart. Seeing a picture will help us help you.

 

[jamtuc]

6 is the offending piece it is aluminium

 

[Wayne County Hose]

#6 is threaded into the cylinder body. Those 2 holes are for a spanner wrench but if it's stuck, a spanner won't help you. There may be a touch of loc-tite on the threads. Here is my suggestion. Put the base end back on the machine. Or better, use a good stable pipe vise or a way to lock it down. Heat the cylinder body by the cap with a propane torch. If you are very good with one, you could use oxy-acetylene but you don't want to over heat the cylinder body. Then take a big pipe wrench with a cheater pipe if need be and turn until it comes out. Sometimes, they are stuck, real stuck. It will come out.

Good Luck,
Andy

 

[kennyd]

Pics help a lot for sure! Heat will be your friend as Andy wrote

 

[jamtuc]

Thanks alot guys I had applied a little heat but was afraid I may do more damage than help. I have tried the pipe wrench but the aluminum seems very soft. I cant keep a good grip on the edge of the head....it is only about 1/2 inch wide. Maybe the heat will help. I have to ask this question also. It may be silly but is there any explosion hazard do to overpressure while heating. I have used at least a couple of my (hopefully) nine lives with explosions.

 

[kennyd]

No, there is no explosion hazard. Pressure can not build up since the ports are open.

 

[RPW]

Only possible "puff" is if there is some hydraulic fluid left in the cylinder and the flame gets to it. Point the ports away from you while heating.

 

[jamtuc]

Applied a judicious amount of heat and finally got the head off. All the teflon parts into a warm water bath. Reinstalled all the parts...put it back together prayed a lot and..... No leaks as of yet thank god. :thumbsup:

 

[jamtuc]

Now that I am finished with the whoopin it up......On to the next problem:confused2: Come on you knew it was coming The drive sheave...Variable speed pully. Dont know if I should start another post or not.
Yes I have searched on this and other sites. It would be a simple rebuild except thats not how it works for me. I can not get the pulley to close to get to the first snap ring. If I had realized this at first I would have used the grease zerk someone put in the roto swivel to compress the pulley but I didnt and now the roto swivel leaks when putting grease in it............ long story endless. I would like to know if there is a way to manually compress the sheave (pulley)