I have a 98 mack ch with 427 and a 13 speed Im having trouble with the transmission not wanting to change smoothly from high range back down to low it either grinds and goes in hard or you have to come to a complete stop makes it hard when you are in a binding pull with a load of gravel or pulling a back hoe
trouble Changing gears
Discussion in 'Mack Forum' started by Dwightsch, Feb 8, 2015.
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My guess is back of transmission needs rebuilt
Badmon, Dwightsch, 201 and 1 other person Thank this. -
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Hi Dwightsch, this was covered a while back here. It sounds like the synchronizer in the back half of the trans. is going south. Someone once put synthetic oil in their trans and swore by it, but it sounds like the synchronizer.
http://www.thetruckersreport.com/tr...n-wheelers-/181079-hi-low-grind-13-speed.htmlDwightsch Thanks this.
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