Jpri Posted Thursday at 09:36 PM Share Posted Thursday at 09:36 PM I have a Mack with the drums mounted on the inside of the hub. Having a hard time finding the 2702 drums. Was wondering if there is a kit to make it like a more modern set up so you do have to remove the hub a bearings to do a brake job. Also if anyone has interchange numbers to a gunite 2702 drum that would be helpful. Thanks! Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/ Share on other sites More sharing options...
Joey Mack Posted Thursday at 09:54 PM Share Posted Thursday at 09:54 PM Find a truck like yours and use the vin to buy hubs for outboard drums... Spend the money. It may be cheaper to buy a back half from a salvage yard, and have spare rear ends as well.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580340 Share on other sites More sharing options...
Joey Mack Posted Thursday at 09:54 PM Share Posted Thursday at 09:54 PM Sure would help to post The model and year, and engine tranny's etc..... 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580341 Share on other sites More sharing options...
Jpri Posted Thursday at 10:16 PM Author Share Posted Thursday at 10:16 PM It’s a 1980 Mack with 44k rear ends. There must be some kind of conversion hub I would imagine. It would be cool if somebody get me a part number. Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580342 Share on other sites More sharing options...
Joey Mack Posted Thursday at 10:36 PM Share Posted Thursday at 10:36 PM I wish i had my notebook from the Superliners that i did.. just get a vin from another R model with what you want and start the search.. all you need is the last six of the VIN. Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580343 Share on other sites More sharing options...
Joey Mack Posted Thursday at 10:39 PM Share Posted Thursday at 10:39 PM To be clear... When i said buy a back half.... I am NOT saying to cut your truck apart.. just strip the parts... Ive done it several times.. i bet you dont have to find an old Mack.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580344 Share on other sites More sharing options...
mechohaulic Posted Thursday at 11:43 PM Share Posted Thursday at 11:43 PM 1 hour ago, Joey Mack said: Find a truck like yours and use the vin to but hubs for outboard drums... Spend the money. It may be cheaper to buy a back half from a salvage yard, and have spare rear ends as well.. definitely the way to go.. a rear cut off . inboard to out board means different hubs which mean bearing s/races etc. individually purchase = = $$$ .cut off with good bearings/ races/ hubs / rims/ drums/ misc ; more cost effective long run. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580347 Share on other sites More sharing options...
Joey Mack Posted Thursday at 11:44 PM Share Posted Thursday at 11:44 PM Thanks Dave... 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580348 Share on other sites More sharing options...
mechohaulic Posted Thursday at 11:52 PM Share Posted Thursday at 11:52 PM '80 with 44's -- are we talking budds / daytons ??? also makes a difference. daytons (inner/outer fasteners)going to outer drums (budd uni- mount ). start buying all the forgotten stuff individual -$$$$, complete cut=off it's all there one package. more $$ up front but way less expense at the end. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580349 Share on other sites More sharing options...
Jpri Posted Friday at 12:18 AM Author Share Posted Friday at 12:18 AM It’s got bud wheels. Getting a cut off is out of the question as I live in Alaska. The cost to get it up here would be so expensive. I think for now I just decided I’m just gonna get the brake drums and get it back on the road. This winter, I’m gonna rebush the trunnion and maybe then I’ll look up and figure out the hub situation. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580351 Share on other sites More sharing options...
mechohaulic Posted Friday at 12:26 AM Share Posted Friday at 12:26 AM thank you for reply and update. some times it's a challenge for the BMT crew to reply not knowing all the tiny details and conditions. having budds already makes the conversion a tad easier i'm thinking. Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580353 Share on other sites More sharing options...
Joey Mack Posted Friday at 12:26 AM Share Posted Friday at 12:26 AM Oh hell.. Alaska.... Well sir I guess i should have asked where you live.. My apologies.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580354 Share on other sites More sharing options...
Jpri Posted Friday at 12:33 AM Author Share Posted Friday at 12:33 AM No problem. Thanks for all the replies. Does anybody have an interchange number for the 2702 brake drum? 2702 is obsolete. Having aNo problem. Thanks for all the replies. Does anybody have a interchange number for the 2702 brake drum? 2702 is obsolete. Having a hard time finding any brake drum that’ll fit. Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580355 Share on other sites More sharing options...
Popular Post Brocky Posted Friday at 12:35 AM Popular Post Share Posted Friday at 12:35 AM 6 minutes ago, Joey Mack said: Oh hell.. Alaska.... Well sir I guess i should have asked where you live.. My apologies.. To Everybody:::: That is why it is so important to list your location, at least the state, in your profile!! That is why I sent Brad to Iowa 80 to ask questions.. 3 Quote Brocky Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580356 Share on other sites More sharing options...
mechohaulic Posted Friday at 12:44 AM Share Posted Friday at 12:44 AM how soon/ desperate is this brake job needed? having budds = unimount studs/ nuts ;;or inner/outer fasteners ? out board drums deeper?longer studs ? I don't know for sure . can't correctly answer whether hubs are same using different studs. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580357 Share on other sites More sharing options...
Geoff Weeks Posted Friday at 01:03 AM Share Posted Friday at 01:03 AM My experience is the hub is always different inboard to outboard. Because the drum is between the hub and wheel on outboard, the flange that the drum mates too has to be further in than with inboard. In otherwords, the wheel has to be the same distance from the frame, regardless of if it mounts against the hub or the drum is sandwiched in between. That makes the hubs different. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580359 Share on other sites More sharing options...
Geoff Weeks Posted Friday at 01:25 AM Share Posted Friday at 01:25 AM This: https://www.accuridecorp.com/sites/default/files/resources/2023-08/WE1.011 Rev. 4 Gunite Brake Drum Product Catalog 8-7-23.pdf shows that drum still active in 2023. Also has all the dim's. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580360 Share on other sites More sharing options...
67RModel Posted Friday at 11:54 AM Share Posted Friday at 11:54 AM Call Watts Mack. Give them your VIN. They will tell you what you have and what you need. I think they have done this many times over the years for people. I have a friend who switched an 88 R686 with Budd steer and dayton drives all over to hub pilot. He spent 25 minutes on the phone with them and had all the answers. Parts were in stock. In his case he was able to reuse his existing wheel bearings. I wouldn't try to guess on something like this and/or get a bunch of maybe answers. Go straight to the source and save yourself a bunch of time and headaches. I would assume they would ship you the parts. I wouldn't want to pay postage or freight on new drums from PA to AK but I would imagine they could sell/ship you everything you need sans the drums and they could tell you the part number of the drums you need. Then you could source those locally. 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580364 Share on other sites More sharing options...
Jpri Posted Friday at 04:16 PM Author Share Posted Friday at 04:16 PM Thanks. I’m going to give them a call. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/75834-mack-44k-brake-conversion-and-drum-interchange-number-help/#findComment-580371 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.