7030 trans/rear end problems

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   I've go a 7030 that is pumping fluid from the transmission to the rear-end.  I'm a diesel mechanic and have 14 years experience in tractor /trailers but little or no eperience with farm tractors.  Frankly, almost all of my tractor expreience has been on a john deere pulling tractor.

I'm assuming that there is a bad seal between the transmission and rear-end but it will fill the rear-end till it overflows which makes me think that its not a seal since the fluids should equalize between the two.  Anyway, before I tear it apart I was hoping for a little input from someone who has had this experience.  I do have an original 7030 Allis-Chalmer service manual but I'd like a little direction before I start working on it.

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Matt80t Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 26 Nov 2011 Location: Indiana Points: 1	Post Options Post Reply Quote Matt80t Report Post Thanks(0) Quote Reply Topic: 7030 trans/rear end problems Posted: 26 Nov 2011 at 11:50pm
	I've go a 7030 that is pumping fluid from the transmission to the rear-end. I'm a diesel mechanic and have 14 years experience in tractor /trailers but little or no eperience with farm tractors. Frankly, almost all of my tractor expreience has been on a john deere pulling tractor. I'm assuming that there is a bad seal between the transmission and rear-end but it will fill the rear-end till it overflows which makes me think that its not a seal since the fluids should equalize between the two. Anyway, before I tear it apart I was hoping for a little input from someone who has had this experience. I do have an original 7030 Allis-Chalmer service manual but I'd like a little direction before I start working on it.

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MACK Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 17 Nov 2009 Points: 7664	Post Options Post Reply Quote MACK Report Post Thanks(0) Quote Reply Posted: 27 Nov 2011 at 6:55am
	It is the seal in the gerotor pump if it does it only running. Most likely spun the bushing through the seal. Pull all 3 pumps out the bottom. Not a big job but oiley and costly. Be a good time to replace the seal on pump drive shaft. MACK