MF 4800 series

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Grove r
Posts: 834
Joined: Wed Dec 08, 2004 8:30 am
Location: Rocky Mountain House, Alberta, Canada

Re: MF 4800 series

Postby Grove r » Sat Apr 22, 2017 9:04 am

Hi Larry you still about??? posted my phone nummer to you but no response.....wanted to know where the hydraulic pump was attached to the 3406 and if it would work on a truck motor ie if it is attached where the air compressor sits then it would be a no go......???????

talk at ya later,
Ron.E.

Larry806
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Joined: Mon Nov 29, 2010 10:37 pm

Re: MF 4800 series

Postby Larry806 » Tue May 02, 2017 3:32 pm

Sorry got busy werken ground and working on tractors . Some damn fool messed up installing the rear main seal on my 4786 and now I've got to pull the motor & do it again .
I'm not sure on anything about a cat motor . All I know is the Steiger had a cat and this was the Hy pump that was on it . . I know it did work fine .
Gonna try & put on a couple pics .
I did not see your number ?
If I can finger out how I'll send ya mine .
100_2459-640.jpg
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I like to learn from other peoples mistakes , I don't have time to make them all myself .

Larry806
Posts: 40
Joined: Mon Nov 29, 2010 10:37 pm

Re: MF 4800 series

Postby Larry806 » Tue May 02, 2017 3:33 pm

100_2460-640.jpg
Ain't smarts enough to get 2 pics on same post
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I like to learn from other peoples mistakes , I don't have time to make them all myself .

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Grove r
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Joined: Wed Dec 08, 2004 8:30 am
Location: Rocky Mountain House, Alberta, Canada

Re: MF 4800 series

Postby Grove r » Wed May 03, 2017 10:33 am

Takk for the reply Larry and the pics....will have a look see about a spot for that flange mount.......surely dont want to seem picky, but, if I cant use the pump maybe someone else can.......

Hows the farming going not started here yet, still too cold and wet...... On the phone nummer thingy, I posted it to you in a private message, look up in the right hand top corner where your user name appears and you should see private message being hilighted, poke that and you should be good to go......

menga takk
Ron.E.

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Grove r
Posts: 834
Joined: Wed Dec 08, 2004 8:30 am
Location: Rocky Mountain House, Alberta, Canada

Re: MF 4800 series

Postby Grove r » Fri May 05, 2017 10:45 pm

Hi Larry, went to the other place and fired up the Autocar, looking at the motor I think the pump you have is a power steering pump that bolts on ahead of the air compressor on the fan side of the timing gear cover. This truck already has that pump for that purpose, so I will have to pass on your offer....many thanks anyway......talk at you later,

have a good one,
Ron.E.

Larry806
Posts: 40
Joined: Mon Nov 29, 2010 10:37 pm

Re: MF 4800 series

Postby Larry806 » Mon May 08, 2017 11:52 am

No his is not just a power steering pump . It was the main and only Hy pump for the whole tractor .
I like to learn from other peoples mistakes , I don't have time to make them all myself .

Larry806
Posts: 40
Joined: Mon Nov 29, 2010 10:37 pm

Re: MF 4800 series

Postby Larry806 » Mon May 08, 2017 9:33 pm

Had a lil time tonight so I looked up some specks .
The tractor the pump is from is a 81 I would guess it would be the 28 GPM pump .
I would think that would be enough ?

The Steiger's of that era used one gear pump to feed a closed centre load sensing steering system and the excess flow went to the remote valve. Everytime you move the steering wheel, the hydraulic flow to the remote valve decreases. Total pump capacity of the PT with the cat 3306 engine which is in the PT225 was around 28 gpm at high idle

More about the Steiger Bearcat III (PT225)
The first Steiger Bearcat III (PT225) Tractors went out of the factory gates in 1977 and they kept building them until 1981. The original price of the Steiger Bearcat III (PT225) Tractor was $66,000 (1982). If you got it for less, you found a great deal! TractorJoe has plenty of Steiger Bearcat III (PT225) parts to keep it running. Make sure you have access to your tractor serial number, because there is a chance that the Steiger Bearcat III (PT225) parts you need depend on that serial number. That serial number is determined by the year of manufacturing, so for a 1977 model, it starts with 141-00001, for a 1978 model it starts with 141-00157, for a 1979 model it starts with 141-00336, for a 1980 model it starts with 141-00537, for a 1981 model it starts with 141-00651. They also have hydraulic disc brakes. The type III*Optional 3-point hitch is very reliable. It is also worth noting that the independent*Optional rear PTO runs at 540/1000 rpms. The Steiger Bearcat III (PT225) has an open center hydraulics system with a 22 gal [83.3 L] capacity. The pump does the job pushing 20 gpm [75.7 lpm] fluids in the hydraulics system.
I like to learn from other peoples mistakes , I don't have time to make them all myself .

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Grove r
Posts: 834
Joined: Wed Dec 08, 2004 8:30 am
Location: Rocky Mountain House, Alberta, Canada

Re: MF 4800 series

Postby Grove r » Wed Aug 16, 2017 9:15 pm

Howdy......lotta water passed under the bridge since the last transcript.......the 4840 withe 903 Cummins is a super workhorse, pulled the thirty foot breaking disc like no tomorrow, used it with singles due to tire issues, now has eight new skins on it!!! gonna take awhile for the pain to subside, if ever.......surely does work up the ground nice.....now need a forty foot finishing disc to compliment the set. On a side note, not running the Cummins up to the speed the manufacturers suggest, 2600 rpm, dropped to 1800 rpm instead, where truck motors are run on the hiways.....figure will last a LOT longer that way......still pulls great as the trucks prolly did with this engine too. Havent had time to do much on the 3406 in the 4800 tractor due to haying and all.......now that that is outa the way should be able to get back on track.....

will go for now, have a good one,
Ron.E.


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