Joey Mack

I believe E-Tech is correct. I'm hoping it's a loose ground or something simple like that..

looks like budd wheels on the front, i assume budd's on the rear,,, certainly not spokes with aluminum rims.. I would be curious if there is a seem where it was married to a back half? Its a cool truck... Just my 2 cent's... Jojo

I thought it was from an international with Eaton rears, and the aluminum rims are modern,, didnt see if they were budd's or hub piloted.. i'll look again.. The truck is still cool.. but I think its a Mongrel... sorry, dont know how to spell Mongrel..... jojo

I just edited my first post, I typed on my phone and saw that some of what I typed didnt post.. "F" has great approaches to diagnose these issues... Pay attention... Jojo

Check the acc. Relay behind the dash,. It looks like a starter relay. You may have a relay next to the fuse panel on the right side, it looks like a cube, if so, swap one of the others with it to see if the issue is still there, also clean the grounds in the dash, there is one next to the fuse panel, and behind the cluster, to the left.. there are other grounds outside too. Let us know how this goes..

Hey there... you are responding to a 3 year old post.. Please post the make, year, eng series, tranny, and the issue you are having

I soak up all of what you have to offer... Luv U Bob... jojo

Yes to all.. It came off the backing plate just fine.. I just have to remove the small piston that pushes the rear shoe.. I already honed the cyls and they are actualy clean. . once I get the other piston out I will know better.. I havent found kits yet, so I will just use the sizes for each rubber cup. I think I can make this happen, of course, I dont have the left side out yet, but.... It's all good.. Thank's, Bob.. jojo

Amen ! My Brother...

That was F'n AWESOME !!!!!! I'll bring the beer...... jojo

So I tried to take the wheel cyl. apart, I had to tap threads into one of the pistons and pull it using a homemade puller.. The washer is a Mack rear engine mount washer.. I have a small stack of those suckers.. now to find a rebuild kit.. im on a very tight budget, so I need to go easy... if I can get the brakes to work, I will be happy. I actually intend on driving it around town often, so hopefully, they wont rust up and freeze again..

Yeah, Kind'a... But.... What I learned here after 2 and a half years, is that we are a bunch of great guys that take this seriously, and help AS A TEAM... And then we tell really cool stories, sparked by the topic at hand.. To me it's like sittin around a camp fire, havin some cold ones and bein BUD'S talkin about the trucks we LOVE/HATE... Just my Opinion.. and I like it...... Jojo

I literally, rotate my gas from the house generator to the mower and shop generator. I keep some in the house Genny with stabil. Then after a while I drain it into a can for the mower. I don't leave the house Genny empty, because we have a lot of Crack Heads in my area, and they drive off the road and take out utility poles.. I lose power several times a year.. :).

I'm like you DCW.. I wish I could be there. I would like to drive it.. of course I will be laughed at, when the owner sees me double clutch.. jojo

Good luck Laser.. Keep in touch. 2nd -3rd, is the same gear position 6th-7th. I would expect it to act up on both sides if there is an internal issue. Also, crazy question... Any chance you were driving an Eaton tranny and now your in a Mack? Jojo

Hey Duck, My guy charged me $200.00 to add the plug and quality wire, and the weatherproof box..... Just tossin that out there...

Mech. Kick's Ass....

I have a gen. hookup too. i had my electrician put it in.. Works great... It is not an auto system, I still have to pull start my Genny, and flip 2 switches, but after that..... I just go back to what I was doin'....

yeah, I asked about a loose yoke as well, still no answer.. all good... jojo

Im not smart on generators, because I just buy what I can afford..... (Cheapo's) I have a Craftsman 5500W with a whatever generator. It's 18 years old.. I did replace the carb last year. I have used it 20 + times on my little 1100 sqft house.. and it does a great job, for its age.. I have a 7500W that runs my toy welders, just in case this one dies,,,, But,,, so far it is ready to go.. I cranked it Friday before the storm hit, just in case I had to switch it out.. 1 Pull... I let it run for 10 min's, cut the fuel line off and let it die out.. Yep, there are many I would like to own, but my little $400.00 Genny, still gets it done... You rekon, P.M. is the reason it run's? Jojo

it's ok... I went through the same thing with the master cyl. $250.00+ I took the part number to Oreillys of all places and got one for $52.00 Of course it needs to last, but now I have one that is not solid rust and I can get it sleeved if needed.. 😉 😘

Yes sir.. I just found new replacement cylinders, with all hardware, and fitting's.. On E-Bay... $325.00 USD.. I'm going to take mine apart and try to hone them, and put new pistons and cups in them.. Yes my truck is a hobby truck/parade truck... jojo

The thing is... If it does it on the low side and not on the high side. We need to look at other issues than air. He is not using the gray button to split the gears, and 2nd - 3rd. Is the same stick position, as 6th-5th. I would love to test drive it. I hate to make a piss poor comment, but is it possibly operator error? I'm on thin ice here... Is this truck new to the driver? Did you come from an Eaton tranny to a Mack 2018? Another thing too, have you checked the out put yoke on the tranny to see if it is loose? With respect, Jojo

Does it do the same thing on the High side?

when this happens,,, are you splitting the gears Lo-Hi or gear to gear?... jojo