seinc Posted March 15, 2016 Share Posted March 15, 2016 Hello. I smoked my rear rear diff in my 93 ch 613. It has CRD 93 ???? Rears. I need info on the best suppliers, part numbers, torque specs, etc. to rebuild the rear. Thanks for all the info you can provide. Thanks, Tim Quote Link to comment Share on other sites More sharing options...
alex g Posted March 15, 2016 Share Posted March 15, 2016 You can call mack dealer and give them last 6 numbers of your Vin and if rear is original they'll give you all info you need. You could probably find a used one easy enough once you have ratio Sent from my SM-G386W using Tapatalk Quote Link to comment Share on other sites More sharing options...
seinc Posted March 15, 2016 Author Share Posted March 15, 2016 The rears are not original. Quote Link to comment Share on other sites More sharing options...
Vladislav Posted March 15, 2016 Share Posted March 15, 2016 The most thing you need to start from is the current ratio. You can find it stamped at the front right of the diff housing on the beveled surface. Something like 4.17 or 3.86. Must be the same on FR and RR diffs. Than just Google "CRD-93" with the ratio and you'll be full of offers. If you want to go a self rebuild route gear sets are avalible from PAI. Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment Share on other sites More sharing options...
fjh Posted March 26, 2016 Share Posted March 26, 2016 Pull the side cover on the front as well and look at the gear set its likely toast as well! Quote Link to comment Share on other sites More sharing options...
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