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I checked the bearings and they are smooth as silk. I changed the spring brake rubber bladder. The shoes were stuck to the drum. I had to whack it a few times before I could get the drum off. I cleaned and lubed the pistons. Hopefully that will help.

So we wired up the wire from the alternator to the starter, removed the shutoff solenoid, bridged the plug, and jumped the starter with the screwdriver. Truck fired right up. No lights. The low air light and the parking brake indicator lights work but no others. I shut off the truck with the...

Wiring up everything now. Will the lights on the truck work?

Positive alternator post to positive starter post? Would jumper cables work for that?

Upgraded 21SI clone. 70 Amp

Any suggestions on how to rig it to work on an A2 truck? I am under a HUGE time crunch. I am supposed to leave at 4 am for Evansville IN to go mow down there. I can order a new box but it will put me back a few days and don't have a second to spare. I watched your video 3 times and I am...

I did an oil change today and my semi sized oil filter wrench ever so slightly cut through the insulation on the wires underneath the oil filter causing a spark storm. I taped up the cut in the insulation with electrical tape and went on to deal with a spring brake bladder replacement and wheel...

So......apparently it isn't the brake. I had the wheel studs snap off on that wheel last week and I had to chain up the axle and limp it 60 miles back. When I swapped to the spare and replaced the studs I pulled the axle and re-packed the bearings in Red N Tacky grease. Now the drum is HOT. I...

Thank you. It is holding air pressure fine but the drum is HOT. I will cage it on the way back. The other drums are no where near as hot. I really appreciate the help.

Quick question, I have a dragging brake on the passenger side, center tire. I am 65 miles from my shop. Can I cage that brake only and limp it back? I have the brake bladder at the shop, I just want to know if it is feasible to cage that brake only until I get back to replace it. Thank you

I found the little guy. I was looking way to far forward. Thanks Simp

Old post but is there a Napa part number the wheel studs for an A2 truck? I just sheared off all 10 of mine and I am stuck on the side of the interstate. I do have the axle chained up and about to limp her back to the shop but I wanted to see if I could get the longer A2 studs from Napa...

Even empty tanks, it is on. Thank you for the info.

Has anyone had their brake lights staying on constantly? I have turn signals and flashers but my actual stop lamps stay on as if I was pressing on the brakes so no one behind me knows I am braking. It looks like tail lamps to them. The only way to turn them off is to move the 3 position light...

Has anyone installed a "house" battery on an M939? I currently have dropped down to two group 31 batteries to start the engine and have a 24 volt to 12 volt 40 amp step down that runs to my cigarette lighter plugs. I am not having an issue but I would like to wire in a 1,000 watt inverter and...

It might be that, but I haven't really noticed a drop in fluid level. I will be back at the shop on Monday. I will absolutely check it. I have also heard of the injection pump leaking. Could it be that also?

I did. I used my engine serial number on parts.cummins.com and got the part number. Just like Wes said, I ordered it online. It was cheap. Shipping was $3.00 more than the part..... I also noticed my water pump was leaking. I ordered one of those as well. I have an oil leak on the...

Shell Rotella and either Fleetguard or Wix filters all changed at 10,000 miles as per the Cummins manual.

Shell Rotella and either Fleetguard or Wix filters all changed at 10,000 miles as per the Cummins manual.

I pull a M322 trailer with anywhere from 15k-24K on the trailer regionally. I put around 10-15K miles on the truck annually.