Etu

Thanks Jojo. Where would I look for that service bulletin.. on this site? Or through Mack?

thanks for the lead. 

I found a listing of Mack SB and I believe the one I'm looking for is SB635008 but I can't seem to access a copy. 

Thanks V,

after cleaning ive got much better air fłów but i cannot get The modę box to divert air to the defrost or floor. Right nów it seems to be stuck on a mix of face vents and floor. Mine has the electric switch to select mode and I'm not sure where to go from here. (Is it the switch or the mode box?)

If it's the mode box how do you get to it?

Ok I pulled the air duct on the right side and the core was very dirty. Vacuumed it clean and also pulled the fan on left side.  Used compressed air to blow through core from the fan side.

When I pulled the fan there was a blue filter between the fan and the coil. Not sure what benefit of a filter on the clean side of the core. Also think the air doors are not diverting air correctly. Going to check that out before I reassemble. 

Thanks. I'll report back what I find after I do what you advised. 

Is there's any benefit to pull the fan to access that side of the evaporator coil? 

Thank you. I'll do that. 

I have a “new to me” 2001 CH613 with little to no air flow from the ac vents. I cannot find any info on replacing cabin air filter or cleaning the evaporator coil. I’ve removed the cowl around the console and can see the fan but don’t know where to look next. 
Any advice will be greatly appreciated. Thanks 

52 minutes ago, Mackpro said:

Build date was 5/18/2000, ETECH 350 HP, Eaton FRO13210C 10 speed trans . Eaton 4.11 rears.  Can be bumped to 400 with just a Dealership download. Although they might want to install the bigger vibration damper if not already installed. 

Wow. Thanks this is very helpful. Much appreciated. 

22 hours ago, Mackpro said:

I’ll pass it along to my dealership buddy and get some info on it . Should actually be a CHN613 , the CHU didn’t come out till 2008. 

Thanks Mackpro. 
any info you have will be very helpful. 

28 minutes ago, Hayseed said:

Etu, Welcome. if You click on the 3Dots on the top RHS of you Post you will be able to Edit Your Post..

Thanks much appreciated. Didn’t know that. 

Sorry this was my first attempt to post a question and I hit the submit button before I complied composing the message. Again my apologies. 
 

I now have a pic of the Vin and it is a CH. However the seller posted it as a CHU.
Thanks again. 

5 minutes ago, Etu said:

I double checked. Ad is listed as CHU613. I’m going to look at it tomorrow. Any help on the vin decode for engine would be greatly appreciated. Thanks 

Update I now have a pic of the vin plate and it is a CH not chu 

I double checked. Ad is listed as CHU613. I’m going to look at it tomorrow. Any help on the vin decode for engine would be greatly appreciated. Thanks 

Looking at buying a 2001CHU613 but it is 7 hrs away and I’ve only seen pictures. Can someone help me decide the vin to learn engine and hp before I go see it?

2001 chu613

 vin 1m1aa13y61w136771

what engine and hp?