I have purchased a 48 Farmall M and was told by the previous owner that the transmission and hydraulic pump share the same fluid and that the hydraulics need fliud. I am not sure what to add I have been told different wts by a couple different people.I could really use some help please. The manual I bought at tractor supply does not really give the fluid information. Thanks
- Thread starter rljuddjr
- Start date
Goose
Well-known Member
The hydraulic reservoir is separate from the transmission/final drive.
I recently bought a '45 M and changed all the fluids. Based on an H I've owned for years, I put half 80/90 and half 85/140 gear oil in the trans/final drive and plain SAE30 oil in the hydraulic sump. I've also used Hytran in the hydraulic sump on the H on occasion, mainly 'cause I keep it on hand for my D19 Allis.
Hope this helps.
I recently bought a '45 M and changed all the fluids. Based on an H I've owned for years, I put half 80/90 and half 85/140 gear oil in the trans/final drive and plain SAE30 oil in the hydraulic sump. I've also used Hytran in the hydraulic sump on the H on occasion, mainly 'cause I keep it on hand for my D19 Allis.
Hope this helps.
notjustair
Well-known Member
The pump could have 30 weight in it - they did when they were new. However, if you are sharing implements with another tractor or borrow implements use hydraulic. The rear end is any good old thick gear oil. It won't matter what you use - it will be higher quality than it had new. I'd drain it and refill. Be ready - it will need more than one empty five gallon bucket to drain into.
notjustair
Well-known Member
There is a plug on the left side about six inches
from the bottom. It needs to be full to there. I can't
recall, but it is about below the clutch pedal I think.
I'm too beat to walk to the shed - it is chicken
houses cleaning day. I will look when I go get straw
and edit this if I am wrong.
I have a binder that has all three manuals in it. I
refer to it often. There is a parts manual, a service
manual, and an operators. I know one is red and
one is yellow (that's the parts) and I think one is
blue. Go on eBay and spring for all three. You won't
refer to the parts manual as frequently, but it is the
only one that shows a parts schematic if you ever
need to pull something apart. The others will tell
how but not have many drawings or pictures. All
three will be the best money you will ever spend.
from the bottom. It needs to be full to there. I can't
recall, but it is about below the clutch pedal I think.
I'm too beat to walk to the shed - it is chicken
houses cleaning day. I will look when I go get straw
and edit this if I am wrong.
I have a binder that has all three manuals in it. I
refer to it often. There is a parts manual, a service
manual, and an operators. I know one is red and
one is yellow (that's the parts) and I think one is
blue. Go on eBay and spring for all three. You won't
refer to the parts manual as frequently, but it is the
only one that shows a parts schematic if you ever
need to pull something apart. The others will tell
how but not have many drawings or pictures. All
three will be the best money you will ever spend.
Allan in NE
Well-known Member
No, they are not the same fluid.
Allan
Allan
Transmission and rear end hold 13 gallons I think, 80/90 or 85/140?, if you want to take up some slack. Originally the Hyd. would have taken 20 or 30 motor oil, but if it's had a live pump added up ahead of the distributor it probably should have hytran or equivalent universal hyd. oil.
Trans. check plug about 8 inches ahead of clutch pedal on the side, fill plug on top cover, big plug rt. side of light pedestal, 2 drains on belly for trans and rear end. Hyd fill and dipstick should be on rt side top, a knob between belt pully and clutch shaft grease zerk.
Trans. check plug about 8 inches ahead of clutch pedal on the side, fill plug on top cover, big plug rt. side of light pedestal, 2 drains on belly for trans and rear end. Hyd fill and dipstick should be on rt side top, a knob between belt pully and clutch shaft grease zerk.
In rear cold winter climates, such as ND, it was best not to use too heavy lubricant in the final drive if the Farmall was used in the winter. The lubrication system was for the large gears to sling lubricant into a trough cast on the inside of the final drive case. The lube ran down the trough to lube the bearings toward the front. If the lube was real cold in the winter, it would not flow to the front of the case, which would eventually cause bearing and gear failures.
Dan Richardson
Member
Goose is correct. And with 13 gallons required hang on to your credit card.
The original belly pump hydraulic system was separate from the transmission.
Dumb question:
If the previous owner went out of his way to point out something different, could more modern updates have been added to the tractor?
1. A live hydraulic pump was added (ahead of the distributor?) and the transmission is now used as the hydraulic sump.
or
2. For convenience, the gear oil in the transmission and the oil in the hydraulic system were both replaced with modern HyTran (Hydraulic/Transmission) fluid, commonly used in newer tractors.
Dumb question:
If the previous owner went out of his way to point out something different, could more modern updates have been added to the tractor?
1. A live hydraulic pump was added (ahead of the distributor?) and the transmission is now used as the hydraulic sump.
or
2. For convenience, the gear oil in the transmission and the oil in the hydraulic system were both replaced with modern HyTran (Hydraulic/Transmission) fluid, commonly used in newer tractors.
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