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Automotive HD/Fleet Forum

Professional automotive forum for discussion of heavy-duty trucks, buses and other on- and off-road equipment, and maintenance of automotive fleet vehicles. Discussion topics include fuels and lubricants, hydraulics, performance, on-board diagnostics, powertrain, power distribution, anti-lock braking and stability control systems, and best practices as they relate to heavy duty and fleet maintenance. This forum is for experienced automotive repair professionals only, membership required.

Continue to the description of our next automotive discussion forum, the HVAC Forum.

Recent Automotive Discussions in the Automotive HD/Fleet Forum

injector circuit open
01/27/2021 in the HD/Fleet Forum
[Driveability: 08 Mack GU7 GU700 10.8L] hello Truck came in for bad injector cups replaced them along with 2 fuel injectors injector cylinder number 2 and 5 job went well test drove truck no codes everything beautiful next day truck comes back runing on ...
class 8 frozen truck,/trailer brakes
01/26/2021 in the HD/Fleet Forum
I have a trailer that the brakes are frozen/rusted to the the drum . Has any one found an easy way to brake them loose .got an tandem trailer setting on a customers lot all 4 wheels are frozen. Other than heating and beating?
01/23/2021 in the HD/Fleet Forum
Hi folks... I need a bit of input...due to a driver destroying a truck a few days ago I need to buy another,,,my issue is I've been running Hino 268A's for the past 10 plus years...Due to them having a pause in production until late 21 I have not been abl...
Eaton 10 speed
01/21/2021 in the HD/Fleet Forum
I dont normally rebuilt 10 speeds just switch them out . This one is less than 2 years old pulled drive shaft and you can push in on out put shaft in and play goes away What are the odds of pulling rear plate and repairing with out pulling trany? Drove tr...
F450 oil leak
01/20/2021 in the HD/Fleet Forum
[Engine: 11 Ford F-450 Super Duty XLT 6.7L] This 6.7 F450 has an oil leak at the front side of the engine oil pan, drivers side. There is what looks like a hex plug in the front of the pan pointing forward. I would assume that it has some sort of o-ring ...

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