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 won't start hot, starts reluctantly cold, con

Welcome Guest, Log in or Register
Author 
NHkeith

08-09-2005 08:22:47




Report to Moderator

Thanks for the help in figuring out my engine start problems. On advise I have removed the fan and radiator and have taken the cover off the injection pump gear. At top dead center with number one intake and exhaust valves closed the injection pump gear looks to be 180 degrees off. My question now is there a corresponding mark or dot on the timing gear as well as the injection pump gear to align to? My book shows a index mark but, I can't seem to spot it on the gear tooth. My guess is if the injection pump is timed 180 degrees out it would start but only be fueled to 2 cylinders and be seriously out of cue on the compression stroke. Should I dig deeper and take the complete gear cover off to check the crank gears as well (much more work)
Thank again
Keith

[Log in to Reply]   [No Email]
Phil (NJ,AZ,Sask)

08-11-2005 22:50:23




Report to Moderator
 Re: 188D won't start hot, starts reluctantly cold, in reply to NHkeith, 08-09-2005 08:22:47  
"My question now is there a corresponding mark or dot on the timing gear as well as the injection pump gear to align to?"

I recall that there is an indented dot on both gears... It should be noted that the half-moon Shaft key is prone to shearing. The Shaft also has a locator(Hole),on the pump side, tang that must be alligned correctly (Hole to Hole)with the inside drive slot.

Hope This Helps,

[Log in to Reply]  [No Email]
Roger (Mi)

08-09-2005 20:44:28




Report to Moderator
 Re: What are you doing? in reply to NHkeith, 08-09-2005 08:22:47  
Since the firing order of the 188D is 1-3-4-2, it cannot run if it's 180 degrees out of time. The injection pump would inject #4 when it should be injecting #1. Since you can get it to run, that means the timing cannot be that far off. The timing of a 188D should be either 4 degrees BTDC (Before Top Dead Center) or 8 degrees BTDC. Usually, there is a decal on the tappet cover telling the proper setting. Always check the simple things first. Why replace an alternator when it's just a loose belt. Don't tear your engine apart until you've made a proper accessment of the problem. It may be as simple as setting it to the proper timing. Make sure #1 is coming up on the compression stroke. Look in the inspection hole on the bell housing for the timing marks. Depending on the engine, stop turning it when it reaches the proper timing mark. Turn off the valve on the fuel tank. Remove the small timing cover on the injection pump. The two lines inside should align. If they're out of alignment, loosen the three bolts holding the pump to the timing gear housing and turn the injection pump until they do. Cranking speed for a diesel is very important too. It must be at least 200 RPM. At that speed, the engine should have 400 PSI of compression with no more than 25 pounds difference among the cylinders. Good luck.

[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