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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Re: Oliver 1755 transmission questions

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J. Schwiebert

02-18-2014 08:54:57
209.173.169.187



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Stand on the right side of the tractor. Look at the over under unit and then shift the lever . Does the linkage a round rod move on the over under unit. There is a dip stick for the over under unit. Have you ever checked the oil level? What are you using for hydraulic oil? It may be too thick for this cold weather. When you start the tractor make sure the transmission is in the transmissions low range. Do you have an operators manual? Start there. J.

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J. Schwiebert

02-18-2014 14:03:20
209.173.169.187



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 Re: Oliver 1755 transmission questions in reply to J. Schwiebert, 02-18-2014 08:54:57  
You asked: How do I identify the over/under unit?
It is located behind the engine. The dip stick is on the left side close to the linkage that works the clutch.



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will-max dairy

02-19-2014 07:39:45
209.217.204.114



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 Re: Oliver 1755 transmission questions in reply to J. Schwiebert, 02-18-2014 14:03:20  
Checked the linkage for the over/under last night. The linkage is intact; but there is no "detente" to it. The lever acts as if there are no range positions. I wonder if this is due to a lack of fluid pressure in the transmission.

I also noticed a cylindrical can oil filter on the housing just above where the over/under linkage enters (and towards the rear of the tractor). I wonder if that filter is for the transmission?

What type of fluid is this transmission supposed to have?

Any hint as to the part number of that filter?

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will-max dairy

02-19-2014 08:04:16
209.217.204.114



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 Re: Oliver 1755 transmission questions in reply to will-max dairy, 02-19-2014 07:39:45  
NAPA's search engine, given the make, model and year of the tractor came of with:

FIL 1307 for over/under transmission filter

FIL 1567 for hydraulic fluid filter

Sound correct?



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J. Schwiebert

02-19-2014 13:15:03
209.173.169.187



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 Re: Oliver 1755 transmission questions in reply to will-max dairy, 02-19-2014 08:04:16  
Have no idea. There are 2 filters for the over under, but if you are going with the NAPA filter get 2 because the transmission uses the same one. Also use a good grade of tractor hydraulic fluid (Hy tran) instead of the type A.



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will-max dairy

02-18-2014 14:20:03
209.217.204.114



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 Re: Oliver 1755 transmission questions in reply to J. Schwiebert, 02-18-2014 14:03:20  
Right. I know where the transmission is; but the location of the dipstick may have taken some searching when I get home.

Thanks.



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will-max dairy

02-18-2014 11:19:28
209.217.204.114



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 Re: Oliver 1755 transmission questions in reply to J. Schwiebert, 02-18-2014 08:54:57  
And brake pads....and exhaust manifold...muffler...rebuild or replacement of the hydraulic pump (in hot weather the hydraulics go limp when it gets too hot...which old timers tell me to blame on the "spools" being loose)

It's a tough old beast; but definitely in need of TLC.



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J. Schwiebert

02-18-2014 14:07:15
209.173.169.187



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 Re: Oliver 1755 transmission questions in reply to will-max dairy, 02-18-2014 11:19:28  
You better do a little checking before too much longer. You said : rebuild or replacement of the hydraulic pump (in hot weather the hydraulics go limp when it gets too hot...which old timers tell me to blame on the "spools" being loose). You need to trouble shoot the unit with a few gauges and not listen to these stories. How many of them know the correct way to trouble shoot the hydraulic system. But check it soon before you do more damage.

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will-max dairy

02-18-2014 14:24:44
209.217.204.114



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 Re: Oliver 1755 transmission questions in reply to J. Schwiebert, 02-18-2014 14:07:15  
As far as the hydraulic pump goes, my father-in-law has run the machine for about four years now. He has, more or less, learned to make due with its quirks. The "spools" diagnosis is based on him describing symptoms to various people, not any kind of troubleshooting.

My fear is that "quirks" become, as you said, damage; so I'm trying to take care of issues one by one. Rolling balage by hand because the tractor is inoperable is quite a chore.

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will-max dairy

02-18-2014 11:16:44
209.217.204.114



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 Re: Oliver 1755 transmission questions in reply to J. Schwiebert, 02-18-2014 08:54:57  
OK. That's a beginning. Thanks.

How do I identify the over/under unit?

I'll check the type of hydraulic fluid that I'm using; but I'm assuming that it's a water issue, since the steering "freeze" can happen at almost any temperature below freezing. The transmission issues take really extreme temperatures. Both go away after a warm-up period.

I'm pretty sure that the old girl is due for some fluid and filter changes, once it gets warm enough to work on it without contracting frostbite.

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Jerry Shannon

02-27-2014 12:46:06
70.194.6.0



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 Re: Oliver 1755 transmission questions in reply to will-max dairy, 02-18-2014 11:16:44  
I have a 1974 1855 Diesel. Great old machine. You have several points of fluid. 1. the engine dipstick is were you would expect on the left side of the engine block. 15w/40. 2. Same side of engine and just past the engine dipstick is the Over/Under Hydraulic Shif. Little cap on it with a dipstick attached. Takes AF2 Auto Trans fluid typ A. 3. Hydraulic Unit on back of tractor. Has a large cap with dipstick. On right hand side of tractor if standing behind unit. Takes type 55 Hyd Oil. 4. Transmission and Final Drive. A little cap/filler plug under and behind the seat at the top of the unit. Takes 80/90 Gear Oil. Lots of it. 44 qrts of it. Maintain fluid level at bottom of the TOP test plug hole located lower and next to the PTO shaft.

As to your cold moving 1755, my 1855 when started sometimes does not want to steer or the 3 point hitch move up or down. My levels are all up and unit seems that is is warmed up. I found ( and this makes no sense to me) that if I shut off the tractor. Let it set for just a few seconds and start it back up, the steering works perfect and the 3point hitch moves just perfect. I have never figured it out. I used to think it was due to cold, but every time it happens, I just kill the engine for a second or two and I mean just a couple of seconds, start it back up and I have power steering and good Hydro"s all around.

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