I work for a very large truck leasing company.The scr (def and dpf combined) system is an industry nightmare.There are well over 1000 engine/emission fault codes that can arise on any modern truck, not counting the cab,abs, or trans ecms.The systems are very complex; even how the truck is driven has a bearing on the scr system(light load vs. heavy; stop&go vs.long haul). Diagnostics is very time consuming; you have nox codes:you have to test the purity of the def,there is inlet and outlet readings to compare,there is pressure and quanity tests to perform. There are problems with the pumps, the sensors and the ecms. Ecms have to be upgraded constantly to have the latest software installed as engineers replot operating parameters and strategies.Qualified techs are becoming scarce and tech support is overrun with problems. Jon f mn., I am very surprised you get away with distilled water; if you own that truck, carry a tote of def in your side box, you do not want to pay to have it fixed$$$. Also, what Bendon-Ks says is accurate, how the scr,(supplemental catalyst reduction)works. At our shop,at least 1 of 5 techs, sometimes 2 or 3, is almost always working on a truck with fault codes and many are scr,dpf related. The driver is part of the emissions system and has to 'obey' the warning lights=regen needed,def low,etc., or the truck will derate,in some cases 5 mph top speed, and have to be towed. 1 model, customers are bad about putting diesel in the def tank: then the tank has to be removed and cleaned ,lines flushed out,if run long enough, the nox sensors need replaced. Very expensive bill for customer$$$. I believe this emissions stuff is needed,oems would try to prove to epa if it was not.It's worldwide. It costs lots of $$$ to engineer,it costs lots to repair. The customer/consumer has to pay higher prices. Is it the best solution- I don't know-is something better coming - time will tell.Mark
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 ]
Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[More Ads]
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.
