mechohaulic

took a ride with camera in hand today. drove in the yard no one around. got pictures and hopes to down load here. a DMM688 non front wheel drive . door tag says '80. no one came around and I didn't get arrested. twin stick ; no dash tag, ruff inside. possibly maxi 6 speed low hole ??

waterbury Mack (long time ago) upgraded their single axle wrecker with a B-61 having a uni-shift. I did the body swap and was the one running the wrecker , most of the time. I didn't like the uni-shift; since it was replacing a '57 Diamond -T 5 speed / two speed , it was an upgrade.

Joe ;; is the cab supported by the over head crane. i would think a COE would twist the rails when raised as in photos. real nice job.

the proper way is always better providing a person has the correct equipment to do the job. i mentioned in earlier post the possibility of the rust/scale in between the rails after excessive hammering. assisted in a rail replacement number of yrs ago. as stated , it's a major job requiring safety as #1 priority. too many heavy items hanging . nice job Joe

hope I'll be able to get close and check door tag. quick glance while driving ,looks to be a site truck .

We don't BS , it's called expressing our knowledge :: LOL😇

hopefully the forum will receive an update . any doubt run the one fitting the driveshaft.

heck if he has both ; run one :it's not right there is the option of using the second. I wouldn't get rid of the spare.

I wasn't going there and be blamed for "going off topic "AGAIN 😁LOL

my wife makes fun of me when driving the car and my right hand starts shifting while listening to a big rig near by going through the gears.

now I know i'm screwed up. reading Your post I'm flipping the yellow button with my finger. Oh to get back to the wrenches again. THANK S JoJo

going through southbury CT today i spotted a DMM 600 STEEL NOSE dump in a lot off main street. I was driving , couldn't stop for pictures. anyone (CT area ) know of this unit. will try to get back for pictures /info. different looking with the steel nose.

old man needs a little help here ;; a 12speed I know , what the heck is a 310MLR. this goes back to what i stated some time back.. the numbering system is SO different.

I'm guilty a few times at least. 😂

It's ALL good knowledge

a Mack mutispeed ::duplex/ tri/ quad are in reality one transmission : a spicer or other are two or more transmissions having a driveshaft in between the two.

now who is going to explain to everyone how did a "pulling 673 injectors topic become a rear axle cap topic , I DIDN;T DO IT THIS TIME LOL

also you are looking at a tandem rear floating axle cap VS the single axle solid axle configuration

no air / nomaxi/NO STOP ::: just sayin.

so many yrs later and still learning. never paid attention to side by side vs up/down on air cleaner piping, do remember the cable control now that you posted a picture. so many changes with "progress"; still remember the dry road/slippery road valve on dash;; it cut the full air pressure to steer axle brakes .

one of the reasons air start vehicles had larger volume air tanks. as with all mechanical devices ; each one has it's down fall. back then engines could handle the forbidden ether can. many of winter road calls for no start / no air.

Don't look now !!! we are going off topic AGAIN. I put short version of me and a H67 on frozen clutch topic. yrs back two old timers came to waterbury mack from Maine to look at a H67 single axle for sale. dead winter cold ; tow truck hooked to H model. I'm in the H. boss and two buyer watch as tow truck pulls me to start. tow truck stops ;I didn't . the H had a twin stick duplex. everything so cold i thought both sticks in gear:: aux wasn't .SMASH into plate on wrecker with the bubble nose. my boss (big guy) races over to me : "get out of that truck you fu--in assole. two buys never said a word; got in their vehicle and left. so summary:: my H model story didn't have a happy ending LOL

thanks for video: i will log off here and check it. wouldn't go through for me on here.

have to say the H model may have been a quirky looking with the little bubble nose ; at same time a different all around truck. higher cab had visibility and shorter cab

new england area back in the day had a number of fleets using air starters. many benefits : if as mentioned they were maintained.