houser
Well-Known Member
Which tank is it that is under the belly below the driver's seat? It has about a 2" drain plug?
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955K shifter linkage questions
- Thread starter houser
- Start date
houser
Well-Known Member
AllDodge. thanks for recalling that. Yes, I cleaned that out back during that time frame. As I recall, it was not bad. I had posted what i found. I can check again though
Nige
Senior Member
Did you also change the oil and filter at the same time you cleaned out the suction screen..?
If so what oil did you put in it..?
If so what oil did you put in it..?
houser
Well-Known Member
I changed out the oil and I think I changed out the filter
I used trans-hydraulic oil that I think was 15w
I used trans-hydraulic oil that I think was 15w
houser
Well-Known Member
AllDodge, thanks. I will double check to see which oil I used.
houser
Well-Known Member
AllDodge, do you think 10 or 15 W is too thin for warm weather use?
My opinion is yes because CAT says to use 30W and they are the designers.
houser
Well-Known Member
Ok, I may try to drain and refill with a heavier grade hydraulic oil. I may try a multi-grade
Nige
Senior Member
For your type of climate a multigrade TDTO oil would probably be the best thing. Cat call their version TDTO-TMS. Other oil sompanies also produce a similar product.
These oils work exptremely well in climates that have significant ambient temperature variations between winter and summer. They are pretty well de rigeur in Canada.
It is worth remembering that mutligrade powertrain oils meeting TO-4 specification were not on the market when your machines were first built.
These oils work exptremely well in climates that have significant ambient temperature variations between winter and summer. They are pretty well de rigeur in Canada.
It is worth remembering that mutligrade powertrain oils meeting TO-4 specification were not on the market when your machines were first built.
houser
Well-Known Member
Nige- thanks a bunch. I have been looking for a brochure like this!
It looks like I can use current hydraulic coils between 10w and 30w pending seasons. Do you think I can use a multi-grade oil that is made for heavy equipment but not necessarily made by Cat and get similar performance?
It looks like I can use current hydraulic coils between 10w and 30w pending seasons. Do you think I can use a multi-grade oil that is made for heavy equipment but not necessarily made by Cat and get similar performance?
Nige
Senior Member
A correction. You do not want to be using hydraulic oil of any type in a transmission. Hydraulic oil does not contains the friction modifiers necesssary to work with transmission clutches or with wet brakes.
The oil you are looking for is usually called a powertrain oil and should meet Caterpillar TO-4/TO-4M or Allison C-4 specifications. Most oil companies manufacture multigrade versions of it. Monograde TO-4 oils such as 10W, 30, or 50 are usually mineral oils, the multgrades seem to be generally synthetics. Here's the Phillips66 offering - https://phillips66lubricants.com/product/powerdrive-synthetic-all-season-to-4-fluid/
The oil you are looking for is usually called a powertrain oil and should meet Caterpillar TO-4/TO-4M or Allison C-4 specifications. Most oil companies manufacture multigrade versions of it. Monograde TO-4 oils such as 10W, 30, or 50 are usually mineral oils, the multgrades seem to be generally synthetics. Here's the Phillips66 offering - https://phillips66lubricants.com/product/powerdrive-synthetic-all-season-to-4-fluid/
houser
Well-Known Member
Thanks Nige. I will see what I can find locally
houser
Well-Known Member
Nige. Do you know where transmission fluid might be going? I don't see any leaks but am low on transmission fluid and I am pretty sure I filled it up previously
houser
Well-Known Member
Can the transmission oil go anywhere else in this machine, like in the case?
Nige
Senior Member
Am I right in thinking that both the fill points for the transmission and the rear end are right next to one another on your machine.?
The transmission fill point is arrowed, the other one is the rear end. If you are not 100% certain that you filled the correct one when you were topping up with oil IMHO your first step really ought to be to set both levels correct, then monitor them going forward.
The transmission fill point is arrowed, the other one is the rear end. If you are not 100% certain that you filled the correct one when you were topping up with oil IMHO your first step really ought to be to set both levels correct, then monitor them going forward.
houser
Well-Known Member
Nige, AllDodge, thanks for your responses. Nige- Those are the fill points. I have topped off the tranny fluid before and I ran it yesterday and found I was low on tranny fluid. I put what I had on hand and it was fine. My rear end fluid (labeled "case") is actually over full and I am not sure how to drain some of it out. I don't know where the tranny fluid went. I don't see anywhere that it might have leaked.
AllDodge -
AllDodge -
Are you saying the tranny oil can leak into the final drive? Does the fact that I seem to be over full in my "case" or rear end play into the possible issue? If so, what might cause this or better yet, what do I need to fix?
Yes seal number 17 is what keeps the oils separated and if it fails then tranny leaks into bevel gear.
Under the machine there is a plug (item 27) for the bevel gear to drain it. It way be covered by a access plate with smaller bolts
The final drive fills plugs (item 25) are on each side
houser
Well-Known Member
AllDodge, thanks! How much of job is it to replace seal 17? Wh as t problem will happen with mor oil in the rear end than what should ?