Log Skidder

ivel03 · #1 06-10-2013, 10:43 PM

Folks,
A friend of mine made up this log skidder for my Cub 2072. It hooks onto the 3 point A-Frame that he previously built for me. It lifts quite a bit, the tree shown is about 12" across and 15+ feet long. It was hollow and many wood pecker holes in it so it's not like green wood but it still weighs enough that you would not want to try carrying it by yourself. I also moved around a half dozen Rail Road ties without many issues.

The idea behind the design was to be able to back up to a log, drop the tongs over the log, lift the tongs to tighten the tongs on the log and then pull forward to tow the log wherever desired. At the end of tow you drop the tongs and then drive away. It mostly works that way, but it seems that i have to help the spikes on the tongs stick better into the log so that they do not pull out when i pull ahead.

Here's a video showing what we were trying to accomplish:
http://www.youtube.com/watch?v=vWDCU9XK7Vg

Oh well, we tried and it turned out pretty good for winging it! It was fun to build and try out; we'll keep tweaking it and see if we can improve the design a bit better.

On to the question section of this post:
When i was lifting the heavier logs i seemed to be leaking some hytrans. It appeared that there was oil on the top of the Automatic relief valve. I think it was Assembly B that had the oil on top but maybe it was Assembly C.

http://www.partstree.com/parts/?lc=c...&dn=0030900049

I did not take the tunnel cover off so I don't know where it's actually coming from.

Questions:
- Is this common?
- Does anyone have the service guide for a 2072?
- How do i test to discover the bad one?
- I assume that Assembly C is the implement relief valve
http://www.machtechdirect.com/valves.html has the Automatic relief valves, what about the implement lift relief valves?

Thanks in advance,
-Levi

ACecil · #2 06-10-2013, 11:15 PM

Welcome to OCC! If your relief valves are leaking, it's time to replace them. I'd take the tunnel cover off, and see what's going on.

J-Mech · #3 06-11-2013, 12:57 AM

Well first of all

Now, as to the questions. Yes, the hydrostat relief valves are "B" and "C" is the charge pump relief valve. (Yes, the implement relief valve.)
Yes, them leaking is normal if they are wore out.
You know they are bad if they are leaking.
Machtech is where most of us would recommend getting them.
It could be leaking at the implement relief valve, but I doubt it. Seldom does a leak spring at that valve.
A complete service manual is available for download in the technical section on this site.

Jumper · #4 06-11-2013, 07:32 AM

By the way, nice job on the log skidder.... pretty cool !

Cubcrazy · #5 06-11-2013, 07:58 AM

That is a pretty cool setup!

seawalkersee · #6 06-11-2013, 11:38 AM

Be sure to keep us updated on that skidder. I something like that.

SWS

ivel03 · #7 06-11-2013, 08:49 PM

Quote:

Originally Posted by J-Mech

Well first of all

Now, as to the questions. Yes, the hydrostat relief valves are "B" and "C" is the charge pump relief valve. (Yes, the implement relief valve.)
Yes, them leaking is normal if they are wore out.
You know they are bad if they are leaking.
Machtech is where most of us would recommend getting them.
It could be leaking at the implement relief valve, but I doubt it. Seldom does a leak spring at that valve.
A complete service manual is available for download in the technical section on this site.

I located the chassis and service manuals in the technical section but there was none specifically for the 2072. Is the one for the 82 series close enough or am i missing it somewhere?

J-Mech · #8 06-12-2013, 02:20 AM

82 series is close enough. Basically, the 982 didn't have power steering, yours does. That is the only difference I can think of.

Peruvian · #9 06-13-2013, 10:57 AM

It seems like you could likely fab something up to work with a sleeve hitch 3pt as well as long as the lift rod was strong enough. I'm thinking something along these lines.