shanenasir1 Posted October 16, 2014 Share Posted October 16, 2014 My gearbox on my mack vision is heating and I have changed the oil cooler and refilled the oil in the gearbox but it is still heatingI have cleaned the breather as well but it is still doing sameThere is a slight leak in one of the hoses but it is very minimalWhat should I do.it is a road ranger gearbox with 18 speed Quote Link to comment https://www.bigmacktrucks.com/topic/37394-gear-box-heating/ Share on other sites More sharing options...
j hancock Posted October 16, 2014 Share Posted October 16, 2014 Check the hoses for a restriction.Do you have a way to get the actual temp. like a laser thermometer? It may be hot but still within an acceptable temperature range for the trans. Does the lube smell like it is burning? Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/37394-gear-box-heating/#findComment-263467 Share on other sites More sharing options...
theakerstwo Posted October 16, 2014 Share Posted October 16, 2014 How hot is it getting. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/37394-gear-box-heating/#findComment-263496 Share on other sites More sharing options...
j_martell Posted October 16, 2014 Share Posted October 16, 2014 What trans and how hot.....Most Fullers are good to about 250*, maybe higher, might be 350....after that the heat wrecks the heat-treating of the gears.....I commonly get 200* from my 8LL in the summer Quote Lack of planning on your part does not constitute an emergency on my part.... Link to comment https://www.bigmacktrucks.com/topic/37394-gear-box-heating/#findComment-263500 Share on other sites More sharing options...
gearhead204 Posted October 17, 2014 Share Posted October 17, 2014 if 100 degrees above outside air temp check it out, as suggested a laser temp gun is quick and easy, also check the temp from one side of the cooler to the other. is the trans cooler clean? is it in the air flow or blocked by a exhaust pipe? or other obstruction. you said you have a sm. leak is it in a hose? if so the inside could be collapsed and obstructing the oil flow. Quote Link to comment https://www.bigmacktrucks.com/topic/37394-gear-box-heating/#findComment-263515 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.