Are these Mack rears?

[autocardc]

They are on an r model dump.

[j hancock]

It looks like a Mack rear taper leaf suspension.     

[david wild]

looks like mack to me

[theakerstwo]

It is a mack.I did have one at one time.

[Maddog13407]

3 leaf walkin beam on 34's by the looks of it. possibly 38's

[terry]

run a setup like that for years, can't count the number of springs I put in it!    terry

[mrgumby]

[david wild]

Yep, that's what was on the Superliner I sold to Jimmy Rymes who then sold to Jeremy Hitlz which now is a show truck and to this day no has noticed the Peterbilt mirror loops that are so much better than the mack ones ??  work on any R/RD Mack

[carlotpilot]

the rollback mh we have for sale has pretty near the same setup

[Red Horse]

11 hours ago, mrgumby said:

WASN'T THATG KNOWN AS ST-34 OR ST-38?

[1965]

Wouldn’t think they would have those on a dump truck

[blackdog2]

A lot of gas company's had them either over or under the shaft system. I talk to a few people that had them and it wasn't a good out come  when the leafs break at the center bolt they turn in to a catilpolt  flipping or crashing the unit Ive change a lot and wouldn't put them on gas trailers and keep them on TB&A box's .

[1965]

15 minutes ago, blackdog2 said:

A lot of gas company's had them either over or under the shaft system. I talk to a few people that had them and it wasn't a good out come  when the leafs break at the center bolt they turn in to a catilpolt  flipping or crashing the unit Ive change a lot and wouldn't put them on gas trailers and keep them on TB&A box's .

I know they ride good, compared to regular camelback 

What is TB&A box’s?

[david wild]

Nice Rollback

[Red Horse]

3 hours ago, 1965 said:

I know they ride good, compared to regular camelback 

What is TB&A box’s?

Blackdog is  talking oil industry.  TBA was "tire,batteries.accessories.  It also  included case goods oil in qts, drums 55 gal and kegs -120 pd gear lube,grease etc.  The industry -the majors that is-first gave up on TBA and then the box fleets just handled lubes.

[j hancock]

16 hours ago, Maddog13407 said:

3 leaf walkin beam on 34's by the looks of it. possibly 38's

Spot on.  This rear suspension was called ST34.  I think it was 34,000 only.  Good possibility that the truck in question was a tractor at some point.

[blackdog2]

40 minutes ago, Red Horse said:

Blackdog is  talking oil industry.  TBA was "tire,batteries.accessories.  It also  included case goods oil in qts, drums 55 gal and kegs -120 pd gear lube,grease etc.  The industry -the majors that is-first gave up on TBA and then the box fleets just handled lubes.

You WON .....?

[navypoppop]

The suspension in question rode better than the camelback set-up but wasn't nearly as strong. If you broke a leaf on camelback you could still safely drive to get it repaired but not the underslung ones. My father had an underslung break a leaf while loaded with a bulk tanker on I-80 many years ago and sure enough she rolled over. He survived, so did the bulk tanker except for a flattened side wall but the R was totaled.

[blackdog2]

22 hours ago, navypoppop said:

The suspension in question rode better than the camelback set-up but wasn't nearly as strong. If you broke a leaf on camelback you could still safely drive to get it repaired but not the underslung ones. My father had an underslung break a leaf while loaded with a bulk tanker on I-80 many years ago and sure enough she rolled over. He survived, so did the bulk tanker except for a flattened side wall but the R was totaled.

Amoco oil driver didn't Island trans. had some bad ones .Gulf had a few but the mech. didn't know anything....... terminal mgr said nothing wrong ....I guess when you were a tie it cuts blood flow upward ?