This Is One Peach Of A Mack

[Olivetroad]

Congratulations to me, in just one too many raises of my right hand at an auction, I am now the owner of TWICE as many Macks as I owned before! Okay, so I only owned one before and now this makes two.

It is a 1973 R686 that appears to be a former dump truck that they slapped a cracked fifth wheel onto some time ago and made it into a lowboy tractor.

I am needing several under the hood parts for a 1971 Mack DM600 that we installed a different motor into, and this was just what I needed.

On the doors they have stickers that read that it is a positive ground truck. I wonder how many batteries being jump started were toasted before they were forced to put the notice on the door? The truck has a pretty new starter on it. Can it be used with a negative ground truck?

Check out the photo I included of the mighty fine non-factory drivers fuel tank strap. I don't think a piece of rusty cable and the bent bolt for a hook will pass DOT inspection - she is a peach!

The worst thing on the truck is that someone installed a Kenworth seat for the driver - what an outrage! Then, while it was being hauled here and spending the night at some truck stop, some Mr. Jackwad and his Lot Lizard friend stole the bulldog off the hood. That is just wrong.

I was really surprised at how small the frame is on this truck compared to my DM. It also only has a single frame. I also noticed that the rear axles have five spokes instead of six and the gear cases on the tops of the rear ends are aluminum instead of iron. Does this mean these are light rear ends like 17,500 or something similar?

I doubt if it will ever run again, but it will contribute lots of parts to keep my good one on the road. It sure is educational to take something apart.

[hatcity]

Seeing that makes Baby Jesus cry snif

Part it out, and post whats left. Folks always looking for reasonable priced parts here

[Rob]

Congratulations to me, in just one too many raises of my right hand at an auction, I am now the owner of TWICE as many Macks as I owned before! Okay, so I only owned one before and now this makes two.

It is a 1973 R686 that appears to be a former dump truck that they slapped a cracked fifth wheel onto some time ago and made it into a lowboy tractor.

I am needing several under the hood parts for a 1971 Mack DM600 that we installed a different motor into, and this was just what I needed.

On the doors they have stickers that read that it is a positive ground truck. I wonder how many batteries being jump started were toasted before they were forced to put the notice on the door? The truck has a pretty new starter on it. Can it be used with a negative ground truck?

Check out the photo I included of the mighty fine non-factory drivers fuel tank strap. I don't think a piece of rusty cable and the bent bolt for a hook will pass DOT inspection - she is a peach!

The worst thing on the truck is that someone installed a Kenworth seat for the driver - what an outrage! Then, while it was being hauled here and spending the night at some truck stop, some Mr. Jackwad and his Lot Lizard friend stole the bulldog off the hood. That is just wrong.

I was really surprised at how small the frame is on this truck compared to my DM. It also only has a single frame. I also noticed that the rear axles have five spokes instead of six and the gear cases on the tops of the rear ends are aluminum instead of iron. Does this mean these are light rear ends like 17,500 or something similar?

I doubt if it will ever run again, but it will contribute lots of parts to keep my good one on the road. It sure is educational to take something apart.

There's all kinds of good parts on that truck. Even if the engine is junk the intercooler, turbocharger, power steering gear, front brake axle, etc. are desired to the restorer.

Most Most Mack tractors of that vintage had a nine inch frame and they served well. I always thought the five spoke rears were 34,000# rears but I've been corrected as they very well could be 38.000#, or 34,000#. On the rear rear banjo housing to the right of centerline will be a stamped number. That number can be decoded to what the suspension is rated at.

When you finish with the parts you need please do part the remainder fairly starting on this site. I don't personally need anything at the moment but somebody does.

Rob

[rhasler]

Congrtulations on being so overzealous with you right hand, I've seen worse. How many bids were there for "Peaches" there?

The differentials should be CRDL(P)( C). The "L" indicating that they are a lightweight version as compared to the cast housings. They have been discontinued for some time, but do turn up from time to time as non-Mack rebuilt units. If you have two of them I would guess that they were original to the truck. Shame about the missing Bulldog.

[pintuhs]

Hey Congrats....

Finally you got your choice... but don't u think.. this truck has mix parts.. as you were saying that it has installed a Kenworth seat for the driver.

Don't you feel different while driving