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Skid steer question.

H

hillsdown

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Joined
Oct 5, 2007
Messages
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Location
Central Alberta,Canada
We have a Tomcat 255 turbo skid steer and know that there is a valve on it that you switch over from summer to winter use . BUT cannot remember where it is and the book does not have any reference of it. Does anyone know here that valve might possibly be ?

Desperately need to find it as it does not run worth a darn when it is cold, it starts just fine but quits as soon as the cold 10w30 oil moves around. We switched it to a light hydraulic fluid for winter but that has not corrected anything .

Thank you
 
Post your question over here too http://talk.newagtalk.com/forums/forum-view.asp?fid=2&bookmark=51&displaytype=threaded
 
Not that I didn't believe you :oops: but I just read the manual online from one end to the other and also didn't see anything. I thought maybe the air intake had an inside/outside air option, or perhaps a cooler bypass of some kind.
Good luck, and when you find out let us know. Not that I need to know, I'm just curious like that :lol:
 
Thanks Jed and Silver . Will try to post over at that site and if I do learn anything will let you know .

Mr HD says thank you very much for your help, and Silver he appreciates you looking the book up and taking time to read through it . :D
 
hillsdown said:
We have a Tomcat 255 turbo skid steer and know that there is a valve on it that you switch over from summer to winter use . BUT cannot remember where it is and the book does not have any reference of it. Does anyone know here that valve might possibly be ?

Desperately need to find it as it does not run worth a darn when it is cold, it starts just fine but quits as soon as the cold 10w30 oil moves around. We switched it to a light hydraulic fluid for winter but that has not corrected anything .

Thank you
Click to expand...

Some John Deere industrial stuff had a valve you could close to take hyraulic load off while starting and warming up machine.

With closed center system and nitrogen 'accumulator' to pump against, j d would instantly try to get 2000 psi. On our loader, engine would crank easier if you raised bucket while cranking (if you din't do first item i mentioned)

is hydr pump on end of crank? anyhow--wherever it's at--see if there's some dohickey you can turn or switch to take it outa service for a bit
 
littlejoe said:
hillsdown said:
We have a Tomcat 255 turbo skid steer and know that there is a valve on it that you switch over from summer to winter use . BUT cannot remember where it is and the book does not have any reference of it. Does anyone know here that valve might possibly be ?

Desperately need to find it as it does not run worth a darn when it is cold, it starts just fine but quits as soon as the cold 10w30 oil moves around. We switched it to a light hydraulic fluid for winter but that has not corrected anything .

Thank you
Click to expand...

Some John Deere industrial stuff had a valve you could close to take hyraulic load off while starting and warming up machine.

With closed center system and nitrogen 'accumulator' to pump against, j d would instantly try to get 2000 psi. On our loader, engine would crank easier if you raised bucket while cranking (if you din't do first item i mentioned)

is hydr pump on end of crank? anyhow--wherever it's at--see if there's some dohickey you can turn or switch to take it outa service for a bit
Click to expand...

Anyway---an 'open center' system is common on lots of equipment---if you were able to look into a valve you weren't using, you could see right thru it---oil just goes round and round till you divert it. Disadvantage is that you're wasting power and building some heat.

'closed center' is used by j.d. and cat---the center is closed till you cycle valve---pump on our little loader will try to pressure up to over 2000#, then cut production from top of 25 gpm to about 3gpm---lubrication of trans, steering, brakes.

it's pumping against what i call an 'accumulator' (no doubt the wrong name)---this is like an enclosed cylinder with just the piston in it. hyd t'd in on one end. on other side of piston, pressured up with 500psi nitrogen when at rest, no hyd pressure. this works as kinda a shock absorber for hye system as liquids are incompressible and is also sposed to give you enuf hydr---with dead engine---to pull over to side of road and get stopped.

the hydraulic pump is crank driven and kinda a rotary piston type. No connecting rods, pistons are kinda free floating and driven by sort of a cam, on demand. With closed center, you're not building as much heat, wsting as much power and wearing as much stuff out---at least that's the theory explained to me.

either will run a cylinder---but you gotta have the right valve for your tractor---found this out by buying a post driver that worked really good for the other guy.....
 
JD has a electric valve that can be installed in the pump that De-strokes the pump. The pump runs but makes no pressure.
 
ok--it does have a pump bypass valve--about page 27

but--it could be as simple as you not having your 'auxiliary hydraulics' in the 'off' position (in which case you owe me a beer)

http://www.thomasloaders.com/upload_files/manuals/255%20Owner(1).pdf
 
North Ridge Ranching said:
hillsdown said:
Thanks guys but my husband is a total asshole ...
Click to expand...

And there comes a shot right out of left field!!!!!!!!!!!!! :x :? :? :???: :-)
Click to expand...

Oh.....I din't realize this was just for a one time use....suggest you stick a magnetic heater on bottem of oil tank, if it's setting outside throw a tarp over it.....is it still pretty good digging, out behind the barn?
 
I had a 7753 BobCat that had a cold weather issue - - - I just got used to plugging a magnetic block heater in to a timer that turned on at 5:00 AM and shut off at 7:00 AM

With the engine oil warm I could fire it up and less than 1 minute everything was working good.

I still have 3 skid steers, a 1975 gas Model 700 BobCat that makes a bunch of noise for about the first 5 minutes on cold days but functions fine

My favorite is a 2005 Cat 277 with heat and air and low ground pressure tracks

My son's favorite is a 2007 JD 328 with heat and air and rubber tires - - - nice unit but I got spoiled with the cat full suspension tracks - - - great ride and no flats! I also hate the door on the JD to the point of thinking about throwing a rock thru it. But I don't use it much so he can live with it!

I got to thinking - - - we probably just don't get as cold as you do. I rarely turn the glow plugs on with the cat and it still starts and runs fine. We probably get to 0 about 3 times on a normal year.
 
hillsdown said:
Thanks guys but my husband is a total asshole ...
Click to expand...
I didn't know you we're kin to my wife. Strange before we married she said I was perfect, I haven't changed a bit. I told her she must be dumbazz since couldn't make up her mind.
 
That is very good. :lol:

Reminds me of a trick I pulled on my wife, girlfriend at the time, when we were on our way home from town one evening. We were in separate vehicles and I turned down a dirt road. It was dark out but there was a full moon. I started driving faster and she couldn't see me for the dust and I got far enough ahead that I managed to back down a side road between a couple bushes and turn my lights off. When she went by, I took off following her with no lights on. I could see because of the moon light. She was driving quite slow so I pulled right behind her and then threw my lights on. I would of loved to be in that car to have seen her face. She was scared out of her mind. I am pretty sure she could of killed me after that one.
 

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