HD5 sprocket install

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   Hello Allis Fans.

I'm new here, I was just advised by some guys over on the IH website RPF that there may be someone who could help me with a friend's HD5 here.

I'm just going to paste my post from that site, hopefully, someone can help me out...

I'm a tech for a Cat dealer and have good general knowledge of working on construction equipment, I have an idea of the correct installation procedures, but could use some specifics if someone over here has them.
A friend of mine just picked up a couple of Allis Chalmers HD5's, one a dozer the other a loader. The dozer snapped the left axle off between the roller frame support bearing and sprocket. I pulled it apart a couple weeks ago and he has found all the parts needed to put it back together. Problem is, he has no service manual & I haven't been able to Google any sort of service info on these final drives. So I don't know what kind of pre-load is needed on the bearings and also need to find out if the sprocket requires being pressed on like a Cat.
 My plan with this project, without proper service instructions - I'm going to use the specs from a D3B Cat, change the numbers around a bit by the sizes of the components and hope for the best. 

If anyone can give me some more specific knowledge, I'd be most gratefull.

>>>>I'm active over on the RPF site, I find it fun and fullfilling to pass knowledge on to others when I can.  I used to work at a CaseIH dealership and now I work at a Caterpillar / Agco / Claas dealership. We carry legacy parts for Allis, I might be able to help some of the people here, so I hope this is the beginning of a pleasant and informitive new association.
I'll be glad to answer any questions (to the best of my ability at least) if anyone wants to send them my way.
***& have a Happy, Safe rest of the extended 4th of July weekend!
Steve  

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cattech Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 05 Jul 2013 Location: MN Points: 3	Post Options Post Reply Quote cattech Report Post Thanks(0) Quote Reply Topic: HD5 sprocket install Posted: 05 Jul 2013 at 2:43pm
	Hello Allis Fans. I'm new here, I was just advised by some guys over on the IH website RPF that there may be someone who could help me with a friend's HD5 here. I'm just going to paste my post from that site, hopefully, someone can help me out... I'm a tech for a Cat dealer and have good general knowledge of working on construction equipment, I have an idea of the correct installation procedures, but could use some specifics if someone over here has them. A friend of mine just picked up a couple of Allis Chalmers HD5's, one a dozer the other a loader. The dozer snapped the left axle off between the roller frame support bearing and sprocket. I pulled it apart a couple weeks ago and he has found all the parts needed to put it back together. Problem is, he has no service manual & I haven't been able to Google any sort of service info on these final drives. So I don't know what kind of pre-load is needed on the bearings and also need to find out if the sprocket requires being pressed on like a Cat. My plan with this project, without proper service instructions - I'm going to use the specs from a D3B Cat, change the numbers around a bit by the sizes of the components and hope for the best. If anyone can give me some more specific knowledge, I'd be most gratefull. >>>>I'm active over on the RPF site, I find it fun and fullfilling to pass knowledge on to others when I can. I used to work at a CaseIH dealership and now I work at a Caterpillar / Agco / Claas dealership. We carry legacy parts for Allis, I might be able to help some of the people here, so I hope this is the beginning of a pleasant and informitive new association. I'll be glad to answer any questions (to the best of my ability at least) if anyone wants to send them my way. ***& have a Happy, Safe rest of the extended 4th of July weekend! Steve

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ac_sd Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 23 Apr 2011 Points: 194	Post Options Post Reply Quote ac_sd Report Post Thanks(0) Quote Reply Posted: 05 Jul 2013 at 3:41pm
	I can fax or email you the referenced pages out of the service manual.....

Coke-in-MN Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Afton MN Points: 41932	Post Options Post Reply Quote Coke-in-MN Report Post Thanks(0) Quote Reply Posted: 05 Jul 2013 at 3:53pm
	Sprocket sets on live axle and is held onto splines by nut which requires about 1200 ft lbs to tighten . Have copy of HD5 manual (single sheet 200 pages copy) which can post to you for $$. Removal of truck frame is required Edited by Coke-in-MN - 05 Jul 2013 at 3:55pm
	Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful."

cattech Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 05 Jul 2013 Location: MN Points: 3	Post Options Post Reply Quote cattech Report Post Thanks(0) Quote Reply Posted: 07 Jul 2013 at 4:12pm
	Thank you for the info. 1200 Ft Lbs on the sprocket nut, no press tooling required? As to the bearing pre load, I figured I'd pull the cover down with 4 bolts to about 20 Ft Lbs, measure the gap and shim accordingly.

dadsdozerhd5b Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 27 Sep 2009 Location: lansdale pa. Points: 535	Post Options Post Reply Quote dadsdozerhd5b Report Post Thanks(0) Quote Reply Posted: 08 Jul 2013 at 8:09pm
	that sounds right with then shimming. I think they wanted no preload on the bearings but will try to find my book and confirm. when you are installing the sprocket, I tighten the nut then take a sledge and hit the sprocket around the nut and retighten. I do this several times until when I hit the sprocket, it has a solid sound. the taper holds the sprocket and must be tight.
	HD5B, HD5G, (2) FARMALL A's, CUB. DO IT RIGHT THE FIRST TIME, IGNORE THE LAUGHTER. FLANNEL IS ALWAYS IN STYLE.

Coke-in-MN Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Location: Afton MN Points: 41932	Post Options Post Reply Quote Coke-in-MN Report Post Thanks(0) Quote Reply Posted: 08 Jul 2013 at 8:21pm
	My 10 ft length of pipe on my 48" pipe wrench and my weight at precise place on pipe gives me the torque rate.
	Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something. "Challenges are what make life interesting; overcoming them is what makes life meaningful."