Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Case Tractors Discussion Forum
:

188D/207D starter drives

Welcome Guest, Log in or Register
Author 
jdemaris

03-14-2005 09:59:50




Report to Moderator

I'm replacing the 188 diesel engine in my 580CK backhoe with a newer 207D engine. The starter drive for the original 188 has 9 teeth. The starter drive for the 207D starter has 10 teeth. So, I got checking part numbers in my 580CK book for the 188 engine, and it shows both - 9 and 10 tooth, depending on certain options like hydraulic shuttle shift, clutch driven, etc. So, I'm a little puzzled. Parts book shows the same tooth and part number ring-gear, regardless if a 9 or 10 tooth drive is used. I've bolted up both starters, and both appear to mesh well. It seems that one must mesh better than the other if the tooth count is different? If the matching ring gear was different, it would easily make sense - but there is only one ring gear for either drive. I kind of hate to find out later that under load when cranking, the wrong starter-drive gear is going to screw up the ring-gear. Anybody know any more about this?

[Log in to Reply]   [No Email]
Jim B

03-14-2005 10:37:43




Report to Moderator
 Re: 188D/207D starter drives in reply to jdemaris, 03-14-2005 09:59:50  
I also noted the same variation in the design of Case starters drive gears for the 188-207 engine family ... The knowledgable Case parts guy at my local dealer said that the different usage was between Gas or Diesel applications. Either will properly mate with the ring gear because both 9 & 10 tooth drive gears are the same pitch diameter. The 9 tooth design effectively increases the torque the starter can place on the flywheel due to gear ratio change. Therefore the 9 tooth is Diesel, 10 tooth is Gas... per my dealer.

[Log in to Reply]  [No Email]
jdemaris

03-14-2005 12:41:17




Report to Moderator
 Re: 188D/207D starter drives in reply to Jim B, 03-14-2005 10:37:43  
Thanks for the replies. My industrial Case dealer is not sure about the drive applications. He thinks it depends on the nose used on the starter. My 580Ck parts book shows both drives being used on both gas and diesel and making the difference when the machine has a hydraulic shuttle shift or a dry clutch drive. The idea of less teeth having more torque makes sense. The newer starter, with the 10 tooth drive, appears to also be a higher-torque starter because the housing is different and probably has bigger field coils in it. Housing is one large diameter all across, whereas the older 188D starter has a stepped down housing with two diameters. So, maybe with the newer starter, what it looses with the extra tooth, it gains back with bigger fields - and thus spins the engine faster than the original 188 9 tooth starter? I'm not a Case expert. In fact, this is the first industrial Case I've owned and worked on. I've been a Deere mechanic most of my life. I kind of like the Case better than most Deeres I've worked on. I'm not sure if it's the change I like, or the machine's design. The smaller Deere engines used the same sort of small frame Delco diesel starters. We got them in two versions - the stepped down housing was called a "700 amp" starter, and the one-diameter housing was called a "900 amp" starter. Maybe I've been overthinking all this, but again - I'm not a Case expert. I bolted both starters up, and both appear to mesh okay. I don't want to have to pull the engine out later and replace the ring gear.

[Log in to Reply]  [No Email]
WAYNE J

03-14-2005 10:22:35




Report to Moderator
 Re: 188D/207D starter drives in reply to jdemaris, 03-14-2005 09:59:50  
on that searter drive. I HAVE FOUND THAT 1 tooth will not make any difference just make sure the outside gear and depth are the same. Wayne J



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy