Sehka77

Hello ,any one know of a good shop or mechanic for older Mack (90 rd model e6 maxidyne full mack truck) trucks in the west coast ? Appreciate any help

12 hours ago, terry said:

Could be water, from bottom of water pump to compressor.   terry

I added pictures so you get a better idea any help would be appreciated thanks 

I don't think so ,it's leaking a bit so its looks black like oil.. just not sure where it goes to hard to see under injection or runs behind it some where etheir to pump or block ??

Hi , I have 1990 mack rd model with e6 -300 engine I have a line possible oil or fuel under fuel injection pump its hard to see where it goes to or what it's for any help would be appreciated it ?? Runs under the injection not sure  If it goes to pump or block?? 

Frist picture is injection pump right under is branded line leaks oil that line runs to  back of (  oil pump )??? second picture 

I can't tell where that Branded line goes to etheir back of pump or block behind pump? 

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

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 

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 

Thanks phildirt it clarify things up 

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

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 

Thank you appreciate your help 

Hi ,their new to the forum had few questions regarding this suspension is a solid beam suspension mack sw80  dont know much about it ? Any help would be appreciated it ? Whats the capacity on this suspension? I have 90 Mack rd690s ? E6 300 with maxitorque 8 speed and mack rear and sw80 suspension.. also need fuse box diagram for this truck? Thanks

Hello guys , I'm  new to the  forum ... I recently purchase a 90 Mack Rd690s e6-300hp with 8 speed mack transmission  love the truck first Mack ever and wouldn't go back to a Pete ..need some help.. I have wiring issue and fuse panel on passenger side back dont have labels or diagram so have no idea what anything is ? Could not find any other fuse box .. not sure if thats the only one but has nothing but circuit breaker and relays No fuses ?.. also do you guys know of a very good mechanic out here on the west coast??  Thanks for all your  help . Also this truck  has no leaf spring  only solid beam suspension.. anyone know the name and capacity of it ? I thought it was a camelback but again no spring