Yesterday's Tractor Co. Fast, Friendly Parts Service
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Tractor Manuals
Tractor Parts
Classified Ads
Photo Ads

Community
Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
TractorLinks.com
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Enter your email address to receive our newsletter!

subscribe
unsubscribe
  
Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Re: Cat DH8

[Show Entire Topic]  

Welcome Guest, Log in or Register
Author  [Modern View]
NCWayne

08-03-2012 12:07:02
69.40.232.132



Report to Moderator

Even though it can be a PITA to check, and the turbo 'sounds; like it is working, that's where I'd start looking. I just replace a turbo on a customers machine a few months back that 'seemed to be working' and spun freely by hand and didn't appear to drag when spinning. Still my gut told me it was the problem and when the turbo shop tore it down they found the thrust bearings were shot and had been dragging causing the turbo to slow down instead of reaching full speed. Even a few thousand RPM'on the turbo can make a huge difference in the performance of the engine. Too, turbo seals leaking too much to the cold/suction side of the turbo can cause an excessive amount of oil to get drawn into the combustion chamber. A small leak will often go unnoticed as the oil will typically get burned off, but a larger leak will, in effect, flood the engine and will create black smoke due the amount of unburned fuel (oil and diesel) caused by the flooding. Either way the turbo would be my first choice to look at. Good luck.

[Log in to Reply]   [No Email]
Bob/Ont

08-03-2012 12:41:18
174.94.50.173



Report to Moderator
 Re: Cat DH8 in reply to NCWayne, 08-03-2012 12:07:02  
Get a hose and a low pressure gauge into the intake manifold and check the boost under load.
Look for 10 to 15 PSI(not exact spec) but will give you an idea on turbo without tearing it down.
Later Bob



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

Hop to:

TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]

Home  |  Forums


Copyright © 1997-2014 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