Mack camshaft problems, Feb 20, 2007 · Has anyone experienced CAM FAILURE / BREAKING in a E7 350/380 HP , also was there any prewarning or did it just go. Feb 17, 2018 · The local Mack dealer had closed up and parts came from across the state. Mack E7 460 Cam and Roller Replacement: Head Removal Needed? E7 460 engines often face camshaft wear and roller lifter failures causing performance issues. There is a lot of stuff to them lining up roller lifters and possibly pulling heads due to guide plate problems and such. Install the magnetic stand, 9999696, and J 47450-1, into the hole in the timing gear dial indicator 9999683, so the tip of the dial plate, the camshaft gear teeth and place the indicator rests on a tooth of the camshaft rod of the tool in the gauge plate slot. Any input is greatly appreciated! Jul 2, 2018 · 2001 mack rd cam shaft problems we think By Moparmike July 2, 2018 in Engine and Transmission Note: If an injector lobe rotates on the camshaft, the rotation is normally by 60 degrees. When it starts to fail, several noticeable symptoms can develop. They seal tighter under heat and resist ovaling. The wires to the sensor were worn through and bare causing it not to run. It takes approximately 15 degrees of rotation before potentially causing the faults codes listed previously or a fault for a pumping injector during the Common Rail Fuel System Test. Jul 4, 2019 · A Mack service tech had told me that was the cam sensor but I've still got the code after replacing. . Nov 4, 2025 · The camshaft plays a pivotal role in engine operation, controlling the timing of your engine’s valves. 1. Mix copper and steel in one head and expansion rates fight each other, risking head cracking. That cam is a big boy. A full cup job runs 8 to 12 labor hours and lands near $1,500 to $2,500 depending on region. Read on to learn about how a camshaft works, common signs of a failing camshaft, and what to expect as far as repair costs go. Ownership, maintenance and mechanical issues forum for all Mack truck models, including Pinnacle, Vision, Titan, Granite, CH, CX, CV Apr 12, 2019 · Note: If an injector lobe rotates on the camshaft, the rotation is normally by 60 degrees. For a bad cam and roller on the Mack E7 460, head removal is typically required due to the H-clip securing the camshaft. Insert the camshaft gear alignment tool, 14. Apr 12, 2019 · Note: If an injector lobe rotates on the camshaft, the rotation is normally by 60 degrees. This guide will explore frequent Mack engine failures, their causes, and practical solutions to keep your truck running at peak performance. Camshaft lobe wander and valvetrain damage Knowing how to identify and resolve common Mack engine problems is essential to avoiding costly repairs and downtime, whether due to high mileage, poor maintenance, or defective components. Well; now it'll start (takes longer than it should), but still flashes the same code. Has anyone experienced the same issues? What is causing this? We have regular PMs done. Feb 20, 2026 · Mack moved to conical stainless cups. Makes sense, change it out and problem solved. They were very helpful and I could talk to the guy it the shop if I had a question. Page 304 Loosening the hub 18. Mar 10, 2015 · I have a 2003 Mack RD6, and am having the lifter and cam replaced for the 3rd time in 2 years.


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