spazzn1

Thanks for all of the input, doesn't sound like an easy fix liked I had hoped. The truck is over 5 hours away, in which case it will have to hauled, which will take away any money saved on the truck. Thanks again. Joey

I'm looking at an 1998 RD688 Dump that has an E7 350 engine with a Maxitorqe 13 speed transmission. The truck only has about 320,000 miles on it. The seller states that they can't get the transmission to go from the low side to the high side. It shifts thru all the gears on the low side fine, just can't get it to go on the high side. Never been around Mack transmissions, and just wanted to see if there might be any suggestions on whether there might be an easy fix to this. I was hoping it might be a simple air problem with it. I would really appreciate any suggestions you guys might have. Joey