Mack t2080 transmission?? Mack Beam suspension??? Mack Fan ?? Frame???

[Sehka77]

Hello have a question regarding  Mack t2080 ? I understand its a 8 speed 123 low and 12345 high?  How should you shift this transmission? Use all 8 speeds? Also I am able to use/ shift  12345 low and 12345 high. Is doing this bad  to the  transmission??  I confirmed its t2080 from dealer so not sure why I use 4&5 in low as well ? Is Mack beam suspension 80k capacity? Or what's the capacity? Also have Mack  Fan in truck has heater/ aC  but to ac compressor anywhere is this really an a/c unit or how does it work ? Also truck has single frame looks to be about 3/8 inch  is this heavy duty whats the capacity? Thanks  everyone 

Edited January 30, 2021 by Sehka77

[phildirt]

Here are a couple of page scans on the T2080.

[terry]

no a/c on that truck, and that is no 80.000 it is a 38.00 or 44.000 at the most.   terry

Edited January 30, 2021 by terry

[Sehka77]

Ok its a solid beam so this is Not a Mack  sw80  suspension?  

[Sehka77]

Thanks phildirt it clarify things up 

[storkmack]

Drive it like a 5 speed on the road.  The 3 gears on the low side, we call them dirt gears and are for off road.   Is this a mixer?

[Sehka77]

Ok did you see the manual Phil dirt provided ? Says not to use any gear higher than 3low to start off ? So I can use high gears when empty  to start off ? It'sa 6 axle dump truck  hauling 23 tons .. has 20k front , e6 300 , mack t2080 , mack rears (3) 8k pushers and not sure if theirs 44k rears with I thought it was sw80 suspension  walking beam suspension? Not sure but I driven truck empty high gears only like a 5 speed does goods. Loaded I drive  it 12345 low and then 12345 high not sure why I'm able to use extra 2 gears in low but I'm able to 

[Swishy]

RE: 12345 low and then 12345 high

sounds like u're peddlin a 10 speed or a RoadRanger 10 speed

cya

[Sehka77]

No not a 10 speed is a Mack transmission  t2080    has low range but should only be 3 gears in low but I can shift 5 and 5 in high thats why I was asking 

[Hayseed]

8 hours ago, Sehka77 said:

. Loaded I drive  it 12345 low and then 12345 high not sure why I'm able to use extra 2 gears in low but I'm able to 

Driving It like this is not Progressive .. When you go from 5 low to 1 high you're actually going Down 2 gears..See the two gears in (Brackets)

 

[Sehka77]

Yes I see makes sense , will have to shift the correct way when load will use 123 ,low then 12345 high , when empty I just use high ranfe