d7 3t clutch

[Troy21]

i got a d7 3t with a oil clutch.. my books dont show how to adjust a oil clutch. my problem is its not snaping back. wont stay engaged, its holding if you hold it back just wont stay back.. alos is he oil pump for the clutch drivin threw a idler and the that goes into the shaft??

 

[Billy NY]

Serviceman's Reference book covers removal and installation, then refers to operators instructions for adjustment, I don't believe I have operators instructions for a 3T 23647 & up, serviceman's reference book states that it has a gear drive pump that picks up oil through a screen in the pump, has an illustration too.

Mine are dry type, but I'm very familiar with that clutch though, oil type looks similar with the adjusting collar, might just need to tighten or adjust that collar (?) and see if you get that distinct snap over on the lever. Basically, its how it works for dry types, Caterpillar manuals do omit things that are important like this, should be in the serviceman's reference book too, shows how to adjust dry type and makes mention of the interlock mechanism adjustment as well, not sure if later 3T's have that. Sparse info not the most knowledgeable on oil types.

 

[Troy21]

from what im piceing together, there is a big ring that has two locking bolts to hold it, u loosen the two bolts and use a punch and hammer to turn the ring if not stuck.. seems mine is way to tight i cant get it to come over center. someone has been trying to adjust it befor but with wore out bushing in the lever that was imposibal... clutch seems strong, it will spin the tracks when u berry the blad, just wont snap over
thainking way to tight

 

[Troy21]

this is the right way... right? the ring spins??

 

[Billy NY]

I'm going way out on a limb with my knowledge on the oil type, It appears in the diagram to have a much different mechanism for adjustment, but uses a bell crank, collar and roller assembly, I can vaguely understand how this works from the diagram, if I saw it one time, be easier LOL.

I hope you at least have the serviceman's reference book, and can look at the photos, exploded views etc. It would seem you may want to inspect and check for problems with the sliding collar-roller assembly has to be in there or within these moving parts that adjust and move those driving plates. Something has to be out of tolerance during the motion of engaging the clutch, as you have to hold the lever.

I should "recuse" myself from further comment, as the oil type is much different and I've never had one apart, really need to see how it works. I know the dry type inside and out, but that is comparing apples to oranges. Principle is similiar with driven and driving plates but from viewing the bell crank to the sliding collar and roller assemblies need more than a first look at a book to comment further on these LOL !

It appears the removal of the component is about the same work as a dry type, which I have done, but not sure how much you can see with it installed. Hopefully Hector or Old Magnet recognize the symptoms you describe and see this post. Be interesting to learn more on this and solve the problem !

 

[Anonymous-0]

When you adjust the oil cluch you turne the adjusting ring 3 inchs clockwise and tight the 2 nut before starting the machine

 

[Troy21]

thanks for the info, mine was way to tight.. someone has been into this befor and never put the locks or the nuts back on.. lucky me i made two locks and bought two 1/2-20 nuts, then un screw the ring three turns and she snaps over still kinda hard, but now it snap in like it should.. im happy, ill just have a lil bigger left arm now..lmao

 

[Billy NY]

Good news, awesome when its something easy, now it ought to hold, a 3T tractor with an oil clutch falls into the almost bullet proof category, was big improvement over the dry type given maintenance, and the friction material wear. Was probably the weakest part on these tractors. A lot of people hold the direct drive tractors in high regard, best suited for drawbar/ag work too. Next time you are near a stump or tree you can push up against (without falling it or limbs on you) should confirm it won't slip or have the lever pop out.