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 - Updatin The Charging System of Your Older Tractor - by Tyler Woods. Older tractors have externally regulated generators or externally regulated alternators, in some instances. That means there is one device that turns energy from the fan belt into electrical energy,
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[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.
