What year was the classic ( round light) Mack R model replaced by the ( rectangular light) RD and RB models?

[Jamaican Bulldog]

When was the classic round light Mack R model replaced with the rectangular light RD and set back axle RB models which retained the similar cab?

I know the real replacement for the R was the CH but the classic cab model also survived with the evolved hoods of RD and RB probably at the time when cooling systems got updated.

I also know that there were heavy models of the classic R models designated as RD and also the heavy duty RD 800 series which stayed in production years after.

Did this change also happen at the same time when the classic DM evolved into the set back axle DM690 series too?

I personally prefer the look of the classic R/DM look after 73.

 

[Mike Harbison]

The regular R model ended in 89,the RD kept the old hood for another year or so,then it got the sloped hood.

[Jamaican Bulldog]

18 hours ago, Mike Harbison said:

The regular R model ended in 89,the RD kept the old hood for another year or so,then it got the sloped hood.

Thanks, does that mean that the older heavier RD 6 series kept the old hood for a while but the sloped hood was on the lighter R models?

[Vladislav]

On 1/15/2021 at 4:18 AM, Jamaican Bulldog said:

Thanks, does that mean that the older heavier RD 6 series kept the old hood for a while but the sloped hood was on the lighter R models?

No. Regular (lighter) series R discontinued in 89 (or even in the late 88?). RD being a heavier mod of an R started from 78 or so and kept the classic round hood with round lights up to 1990 or 1991. Than it (RD not R) purchased new (slopped) hood and stayed in production until 2004.

RB is another story.

[Jractruck]

I have a 1980 r 688. What years had same cab? I need interior parts.

[convoyduel]

On 4/30/2022 at 1:25 AM, Jractruck said:

I have a 1980 r 688. What years had same cab? I need interior parts.

The RB, RD and DM all used variations of the same cab architecture and were produced until ‘04-‘05.  The DM stopped in ‘04, the RD stopped shortly after in late ‘04 and the RB stopped in ‘05.  Late production numbers were very low.  Of course, things between models were different with cab cowls, door skins (DM) and other sheet metal on the DM to accommodate the offset.  Dash panels, door guts and other things were common though.  Most of the parts are no longer available from Mack in my experience.  Dash boards and switches were updated across the RD, RB and DM in March 2001 for ‘02 and up models.  This included stainless bezels on all gauges, new gauge faces, all new switch hardware and layouts and other things.  

I always use my former ‘02 RD 690 VIN last six was 033790 as a parts reference.  I custom ordered it and it was built April ‘01.  It had every gauge and the ultra rare level 4 black interior.  

Edited May 1, 2022 by convoyduel