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Massey Harris & Massey Ferguson Tractors Discussion Forum
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MF 35 Trasmission / Hydraulic - Real dumb question

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Kari

06-30-2005 07:22:19




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OK, I'm emberassed to even ask it, but fortunately I can be pretty anonymous on the internet.

I have a MF 35 diesel that needs a change of transmission oil. Am I correct that it needs 'Transmission/Hydraulic' oil?

Also, I always thought that the hydraulic oil came from the same pool as the transmission. However when I drained it the hydraulic oild didn't seem to empty (the smaaler cap under the seat). Am I totally out to lunch?

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RandyR

07-03-2005 06:09:59




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 Re: MF 35 Trasmission / Hydraulic - Real dumb ques in reply to Kari, 06-30-2005 07:22:19  
For viscosity questions see this. 90 weight gear oil is about equal to 40 wt motor oil.
http://www.bobistheoilguy.com/visc.html



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Henning Hertz

07-01-2005 09:51:42




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 Re: MF 35 Trasmission / Hydraulic - Real dumb ques in reply to Kari, 06-30-2005 07:22:19  
According to my original users manual, supplied with my tractor in 1959, the Coventry,UK built mf-35 requires 30 litres of straight mineral oil, suggested Shell X-100 SAE40, at changing intervals of 750 hours. The manual says nowhere to use 90wt. or other similar oil products. I would like to know where you find the information mentioning heavy oil in a '35er!
Same oil (SAE40) is used for steering and belt drive gear. When changing transmission oil, drain through both drain plugs in the transmission housing and the rear end simultaneously. Fill through the big hex cap to the left of the gear lever. The lift arms must be in the lowest position.

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Big Dean

07-01-2005 10:42:36




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 Re: MF 35 Trasmission / Hydraulic - Real dumb ques in reply to Henning Hertz, 07-01-2005 09:51:42  
The US Manuals say to use 80/90 wt straight mineral oil. A few years ago we when through this on this Forum. Someone from the UK done some research on it and said it was the same oil just that the way the US and the UK rate the viscosity was different.



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Henning Hertz

07-01-2005 13:10:43




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 Re: MF 35 Trasmission / Hydraulic - Real dumb ques in reply to Big Dean, 07-01-2005 10:42:36  
Du you by any chance have a viscosity conversion table, or does anyone out there?



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Big Dean

07-01-2005 21:55:26




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 Re: MF 35 Trasmission / Hydraulic - Real dumb ques in reply to Henning Hertz, 07-01-2005 13:10:43  
The person that done the research on this he and I discussed this off and on for about a weak by email because over here in the US our manuals for tractors built before 1964 says to use Massey Ferguson M1103 and says it is 80/90 wt. mineral oil. The person that I was discussing this with was from Denmark his UK manual said it was 40 wt. mineral oil we could not figure out why over here it said 80/90 wt. and over there it said 40wt. He contact someone from Massey Ferguson and they explained the differenence in how the viscosity is dertermaned in in the USA and the UK This was back in about 2000 or 2001 I had that information saved till my computer crashed and lost it.

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lzybull

07-01-2005 03:01:14




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 Re: MF 35 Trasmission / Hydraulic - Real dumb ques in reply to Kari, 06-30-2005 07:22:19  
go to big deans site. he has all the info, you"ll ever want . glenn



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Big Dean

06-30-2005 14:44:43




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 Re: MF 35 Trasmission / Hydraulic - Real dumb ques in reply to Kari, 06-30-2005 07:22:19  
In the US the MF35 used 8 gallons of massey Ferguson M1103 Trans/Hyd oil it is a 80/90 wt. straight mineral oil or it can be replace with GL1 gear it is straight mineral oil also. do not use any gear oil that is not mineral oil. You can get GL1 from NAPA parts stores. There is two drain plugs on the left side one is on the lowest point on the transmission the other is on the rear center housing just in front of the rear axle housing. If I can be of further Email me

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Rod in Smiths Falls, ON,

06-30-2005 07:37:47




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 Re: MF 35 Trasmission / Hydraulic - Real dumb ques in reply to Kari, 06-30-2005 07:22:19  
For a newbie the transmission oil change is pretty confusing. First, there is a whole lot of oil in there, and a regular drain tray can't begin to contain it. Be ready to put the plug back in.

There are a couple of big plugs on the transmission/rear end for draining, two, I think, on the 35, three on some other models. But there are three compartments for oil, and it takes a long time for these levels to sort themselves out through little ports on the bottom of the transmission. This makes for confusing draining and filling procedures. Leaving it to drip overnight seems to be the norm.

The tranny takes GL5 hydraulic oil, btw. You will need about 8 U.S. gallons, but check locally for the exact amount. I ended up putting ten imperial gallons into the tranny, which produced a lot of leaks from seals until I got it down to the right level. Don't ask your physician how much oil the tranny takes, just because he owns a 35.

It will take some tinkering to get the tranny fluid level set properly, so plan on topping it up over a couple of days.

The filler hole, btw, is a large plug just to the left of the gear shift. I found a sump pump hose fits it well, and the other end will thread into the drain on a 5 gallon oil can, making for quick, clean fillups. But you need to know when to quit.

Good luck.

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Kari

06-30-2005 12:16:08




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 Re: MF 35 Trasmission / Hydraulic - Real dumb ques in reply to Rod in Smiths Falls, ON, , 06-30-2005 07:37:47  
I got the filler for the tranny, but just to confirm - The smaller filler hole (on the same side but closer to the seat) is for the hydraulic, but part of the same pool as the tranny fluid?



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Thomas

06-30-2005 13:56:21




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 Re: MF 35 Trasmission / Hydraulic - Real dumb ques in reply to Kari, 06-30-2005 12:16:08  
There is only one filler hole, there is a breather on the lift cover (1/8 BSP I think) but you won't get much oil down there. Just fill the transmission and leave it to settle for 20 mins or so. The oil has to travel through a bearing on the bottom shaft to get into the back end. I don't know how you could get 10 gallons down there, 1 x 25 litre container (5 UK Gallons) is enough for a 35.



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