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80 series comp truck gearbox issues
Posted: Wed Dec 07, 2011 3:34 pm
by Jimmy-jam
My 80 keeps popping out of 1st and 2nd gear when I'm in low range goin down hills with no throttle or brakes, would anyone know what is causing this problem because my navy keeps getting cranky when I tell h to hold it in gear lol
Re: 80 series comp truck gearbox issues
Posted: Wed Dec 07, 2011 3:39 pm
by crankycruiser
does it have a body lift?
if so thats the first place i would look.
My 80 kept doing the same thing (but it was only 2nd and 4th that i had problems with) and it was the rubber boot causing it to jump out, too much tension on it.
sounds like it might be a bit more serious with urs being 1st and 2nd.. but u know what they say! start with the simple shit first!
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Re: 80 series comp truck gearbox issues
Posted: Wed Dec 07, 2011 4:28 pm
by Jimmy-jam
yea does have a body lift, but no longer has rubber boot lol, having issues with clutch though with shifting and getting into gear,
Re: 80 series comp truck gearbox issues
Posted: Wed Dec 07, 2011 4:29 pm
by TheBigBoy
Yeah sounds like what mine was doing. The vibrations and the gears not smeshing propperly after my gearbox rebuild. Took it back to the shop. Dont know exactly what they did. But its rock solid now.
Re: 80 series comp truck gearbox issues
Posted: Wed Dec 07, 2011 4:35 pm
by Jimmy-jam
my best bet is too probably to pull it apart and see whats goin on in there????
Re: 80 series comp truck gearbox issues
Posted: Wed Dec 07, 2011 4:47 pm
by TheBigBoy
lol no. Best bet dump it off to the gearbox shop for a day or 2. They didnt have to remove athe gearbox on mine to fix the problem. If its the same as mine.
Re: 80 series comp truck gearbox issues
Posted: Wed Dec 07, 2011 4:52 pm
by Jimmy-jam
only issue is i have to trailer it there, due to it not being roadworthy lol
Re: 80 series comp truck gearbox issues
Posted: Thu Dec 08, 2011 7:27 pm
by ca18zook
Make sure u use the factor gearbox oil as this can happen if u fill with 80 90
Re: 80 series comp truck gearbox issues
Posted: Thu Dec 15, 2011 8:05 pm
by dual lux106
i have spare box no transfer. if ur interested ph 0413739123 if ur not running the right oil it will make it hard to change gear
Re: 80 series comp truck gearbox issues
Posted: Mon Dec 19, 2011 10:30 pm
by skootin
Try changing the cup and seat on the gearstick. Cheap and easy if your gearstick flops around in gear this will fix it.