Joey Mack

I remember back in 2000,, i had only been driving 2 years+,, I was driving a '79 R model with a 12 speed, and I also drove a '98 RD with an 18spd... I was so proud as a new driver, to be trusted with these machines.. We were doing a "Target Store " pre-load and service road... We had to back down the service road with our loads, and , no sh!t.. I payed close attention to backing, and could push those dump trailers all the way down that curvy dirt path, with little to no pull up's.. I was really proud of myself. to this day I always try to back into tight spots whenever I can. at that time I was leaving to go work at Maine Mack as "Mechanic".. one of the owners said that he was going to miss me, because, with my limited driving expereince, he said I was one hell of a driver... I left that full time job with my head held high. I decided to drive for them on my days off from Mack. Mostly what I did was site work, driving a 'yuke' truck/ cat wagon, and some small dozers and roller's.. I was very proud back then... I guess my point is... are the newbies proud of the incredible responsibility that they hold? Class 'A' means more than just the endorsement on the Driver's liscence... jojo

it certainly was a cool maneuver. If my Schneider driver trainer saw me scuff those trailer tires I would have been written up.. regardless if I docked right without hitting the other truck or anything else.. I love it... jojo

I wouldnt worry too much about giving away secrets on how to drive... "Driving" is/has been dumbed down for years.... So the tricks of the trade will likely fall on deaf ears.. Unless there's an 'app' they can put on their phone's... jojo

I'm curious too.. I just put a harness on an MP-8, and it was over 1500.00.. I did 1 Etech and 2 ASET's last year and I think they were around $1300.00... jojo

Here is the part number for the top oil feed system.. the drilling procedure is VERY IMPORTANT. if you 'miss', the Jake head is junk.. Jojo

255324911112 Seller assumes all responsibility for this listing. Here is a listing on E-Bay.. $75.00 OBO.. If you dont buy it, I will.... Jojo

I just went to my shop library.. My 2 midliner books do not have the info for youre issue. however, if you can find Mack book # ML526S, that may be the book you need.. good luck, jojo

Like Glenn said, Hook shop air to it, at the discharge hose off the compressor and try to find the leak, no need to run the engine and make noise. this way you can listen good to find the leak/s.. jojo

all good.. I have responded to a few old post's in the past, and probably will again... Jojo

I really thought NEO's post was current... ooop's... Dumb me.. jojo

I was wondering if youre Midliner has a steel pipe coming from the air compressor output/disscharge port.. Its been a while since I worked on one of those neat little cabovers.. if you have a metal pipe it may be clogged with carbon.. pics would be cool.... jojo

How about taking the dash panel off and following it from the gauge to where it goes through the firewall, my best guess is it goes to one of the buss bars on the top left corner of the firewall.. there should be 2 wires at the sending unit, one is a ground... jojo

Hey bud, 6-4 is a communication code for the 1939 line... it's the yellow and green 'twisted pair'.. check the pin condition and tension at the VECU, and at the Diagnostic port, under the dash above the clutch pedal.. check voltage at these 2 pins,, low side is about 2.5 volts and high line is about 5+ volts... I dont remember the exact volts but im pretty close.. there is also a triangular duetch plug on the firewall along with the many harness's near where the steering shaft comes out of the wall.. I know you said you can kick the panel and it changes the truck.. so maybe you missed something during inspection.. jojo

If he has Jacob's 690 head, the lash was changed to .021".. From .017" after a top oil feed update was done and the reset screws in the bridges were replaced with the 'Armoly' screws, and the check valve under the jake head was removed and replaced with the little screw in check valve. If these are not done then lash is .017" .. even after all of these updates, the engine brake still sucked, just not as bad. next: If you have "powerleash" you will see the celenoids are clamped directly into the rocker shaft's. they are sealed by 2 orings and the bail's that hold them in is 'it' usually a bad oring will cause the engine brake to operate all the time, however, it wouldnt hurt to check them, the bottom oring will stay in the hole, so you will have to pick it out. with this engine brake set up, the lash adjustment is different than for the 690 heads. Please post which engine brake you have. I assume Jacob's because of youre issue.. jojo P.S. correct bridge clearence adjustment and valve adjustment is really important. you may have pinless intake bridges, so no adjustment needed there..

Thank you to all that tried to help... I found a manifold.. Jojo

one thing that was done that I really like, is that they added a 3rd bolt inside the carrier housing.. jojo

Ricky... you may want to stay in touch on this one.. If the engine and driveline is solid and the frame is right.... It is one of the last real trucks left.. like I said before... I never owned a fleet, just repaired them.. there will be a very smart person here that will school you right.. good luck Ricky... jojo

I am reluctant to speak harshly, however.. yes.. as you know, one wrong move and the valvetrain rattles.. It's over... The truth for me is this... 20+ years ago when I was new and ambitious, I did a cam job on an ASET... Keep in mind, I had already done a bunch of valve adjustments and E-Tech cam's prior..... I rolled the engine up on #1... ran the rack.... cranked it up.. ran like crap and miss fired.. My heart fell into my stomach... I ran the rack starting on #6, not #1.. I went to my boss and told the truth about my F-up... he said "fix it' and dont do it again... 10 hr's later, I put new lifters in it and it purred like a Dog... A hard lesson, but..... It helped make me who I am today... My 2 cent's... jojo

the plastic side cover is real,,, thanks to Volvo.... jojo

so true 'V'... Glad to see you again... missed you... Jojo

"V" is absolutely right!!!!! Jojo

I just looked... no more postings since Monday.. Jojo

I have tried and tried to tell people to use the clutch... I get told that I dont know what im talking about,, I said, when you use the clutch, the flexing action of the pressure plate keeps the clutch clean by letting the dust and rust fly out and the clutch stays limber for lack of a better word.. ive had people tell me that they dont want to wear out thier linkage, and I say, thats what grease is for... lube the linkage and the cross shaft bushings and the throughout bearing till a little grease comes out onto the clutch brake,. that little grease on the clutch brake is the 'fuse' between a working clutch brake and one that is laying in the road somewhere... Jojo

I'm a young'n... 53 this April.. I too keep my class A... never know when I may really need it again... These guys today dont even know how to shift, I took in a truck today that I have driven a few times, and I could'nt change gears in it, because the driver beat the daylights out of it trying to pull it into gear.. I guess the clutch pedal is there for looks.. now I have to pull the shift cover to see what the hell he bent.. It's a metric Eaton 10 speed... FRO15210c.. Simple to drive, but apparently easy to break in this young drivers hands... Mabey the shift rail bolt is loose and I can just put in a new one with green thread lock and be done.. Oh well, I guess I got another paycheck comin'... jojo

I believe when the 200 series trannys came out, that was the end of the PTO on the bottom countershaft. I have worked on a bunch of 100's in the early 2000's.. now not so much.. I did freshen up a TRD 72 for a B-Model that I'm building an ENDT 673 for. but I've had that engine in my shop for over 2 years. They keep taking me off of it and putting me on a Superliner, or something else, like a B-61... and next I have to do a wheel seal in another B-85, and a rear main in a B-61 Tiller Fire truck.. I am so glad to have the opportunity to work on these great machines. I just put an engine harness on a 2009 MP-8...(at my shop) one of many that I have done... I would rather work on the old iron, and bust my knuckles, then to work on a 'Fake' Mack.... jojo