Eliott Posted May 14, 2020 Share Posted May 14, 2020 I have a 2003 Mack CH613, I was trying to check my transmission fluid, I was told that on a 13 speed, I would find it on the driver's side about half way up. They told me it would be a 3/8 male or female plug. I found something different, not sure if this is the plug or not, I went to make Mack and got a diagram, and it matches the placement but looks different. I will upload the pictures below, if any one could help me out, I will appreciate it. Quote Link to comment https://www.bigmacktrucks.com/topic/62538-13-speed-transmission-fill-plug/ Share on other sites More sharing options...
Eliott Posted May 14, 2020 Author Share Posted May 14, 2020 Quote Link to comment https://www.bigmacktrucks.com/topic/62538-13-speed-transmission-fill-plug/#findComment-451166 Share on other sites More sharing options...
br549 Posted May 14, 2020 Share Posted May 14, 2020 That's the right place, somebody welded a wheel lug on it. Quote Link to comment https://www.bigmacktrucks.com/topic/62538-13-speed-transmission-fill-plug/#findComment-451169 Share on other sites More sharing options...
fjh Posted May 16, 2020 Share Posted May 16, 2020 On 5/14/2020 at 11:40 AM, br549 said: That's the right place, somebody welded a wheel lug on it. Yup ever since fuller went to a straight thread on that fill plug they can be a bear to get out the nut is a Real good idea! Quote Link to comment https://www.bigmacktrucks.com/topic/62538-13-speed-transmission-fill-plug/#findComment-451297 Share on other sites More sharing options...
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