Dump body hoist issue

[Red Horse]

Not exactly a tractor issue but I'm hopeful some of the knowledgeable people who view these threads might have an idea. I have a 1956 B-61X Mack Dump that has what I believe is the original hoist that was installed when the chassis was new. I replaced the body a couple of years ago with a new Galion but wanted to keep the hoist as it worked fine.

Issue is it leaks. These old units did not have a separate oil tank as they do today instead the hoist cyinder is very large and the fluid simply moves from end to end with in cylinder.

As ypu can see from picture, there is a large packing nut which I have tried to tighten without luck. It has been suggested that the end plate itself has a big gasket and that is my issue.

Any thoughts-leak is slight so it is difficult to spot as you clean everything off and it takes a while before I have a mess on the floor.

 

[5030]

I'd take it to a cyulinder repair shop and have it rebuilt. While you are at it, put a rubber plug in the maxi chamber I see in the picture. The DOT frowns on that if you get inspected.

 

[Rustyiron]

Tractor or not, MORE pics of that B-61! please

 

[joemd11]

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^this!!!!
I love old dump trucks.

 

[Pepsiboy]

Not exactly a tractor issue but I'm hopeful some of the knowledgeable people who view these threads might have an idea. I have a 1956 B-61X Mack Dump that has what I believe is the original hoist that was installed when the chassis was new. I replaced the body a couple of years ago with a new Galion but wanted to keep the hoist as it worked fine.

Issue is it leaks. These old units did not have a separate oil tank as they do today instead the hoist cyinder is very large and the fluid simply moves from end to end with in cylinder.

As ypu can see from picture, there is a large packing nut which I have tried to tighten without luck. It has been suggested that the end plate itself has a big gasket and that is my issue.

Any thoughts-leak is slight so it is difficult to spot as you clean everything off and it takes a while before I have a mess on the floor.

Red Horse,

As a young man, I drove one similar to that. It ALWAYS leaked a bit. Not enough to make a HUGE mess, but would leak about an ounce a year. We just dealt with it by putting a little saw dust or floor dry under it if it was going to sit more than a couple days. At that time, we talked to dealer about rebuilding the cylinder and he said that it MIGHT get fixed and might NOT, or may even leak a bit MORE after being done. Just a problem with type cylinder.

If it were ME, I'd just try to deal with it, UNLESS the lead got to be more than a couple ounces a year. :2cents: Good luck.

Dave

 

[D7E]

That's not a leak .....Some of our machines lose half a a gallon a day

 

[Red Horse]

5030- hear you on the can. And thx to the rest of you for comments-real world it will probably be cost effective to deal with the leak.

and for those who like old iron a few shots-lettering job just done

 

[Rustyiron]

Very nice!! Thanks

 

[BAP]

Very nice truck, it's my dream to have a B-model like that someday.

 

[Looking4new]

She's a sweetheart!