General questions about my granite

[06mack]

Hi everyone,

I have an 06 granite cv713 that I have a couple questions about. What are some things I need to watch out for as far as maintenance goes? Also, I tried to recharge the ac system and I got it up to where the gauges said full but then it let the pressure out like there is a relief somewhere that isnt set right. How do I fix that? Also, how do you turn up an e7 motor without getting too crazy as far as rebuilding the internals? It seems to be short on torque/hp and it generally lugs until it hits about 1600rpm whether its loaded or empty. I'm sure I'll come up with other questions as this thread goes but that's it for now. Thanks for any info you care to share!

[Mackpro]

Get the rocker arm bolts replace with th newest part number , get the  valves adjusted and software updated  as well . And when you drive it just hold it to the floor , you won’t hurt it . 

[Mudman74]

We have 4 of them in our fleet. Notorious for oil leaks from lower exhaust manifold bolts and where the oil filter manifold mounts to the block. As mentioned earlier update the software. If you have an iegr engine and have to fix leaky exhaust manifold bolts, replace the exhaust manifold with older version (less restriction). Also had wiring harness issues. All in all the are decent trucks.