michael57 Posted April 14, 2007 Share Posted April 14, 2007 Hi i have a R609 RST with CRD 92 &93 diff with 8 bolt flat flange axles can anyone tell me if they are 38s or 44s Thanks for any help Regards Michael R609 Quote Link to comment https://www.bigmacktrucks.com/topic/2360-r600-diff/ Share on other sites More sharing options...
HK Trucking Posted April 14, 2007 Share Posted April 14, 2007 34 or 38k, depending on the springs used.34, 38, and 44k all use the CRD 92 & 93 carriers.The 34 & 38k have (8) 9/16 studs on the axle end.The 44k has (6) 5/8 studs on the axle end.The 55k has (8) 5/8 studs on the axle end, but that has CRD 112 & 113 carriersThe 65k has (8) studs on the axle also and has CRD95 & 96 carriers. Quote "If You Can't Shift It Smoothly, You Shouldn't Be Driving It" Link to comment https://www.bigmacktrucks.com/topic/2360-r600-diff/#findComment-11756 Share on other sites More sharing options...
michael57 Posted April 15, 2007 Author Share Posted April 15, 2007 34 or 38k, depending on the springs used.34, 38, and 44k all use the CRD 92 & 93 carriers.The 34 & 38k have (8) 9/16 studs on the axle end.The 44k has (6) 5/8 studs on the axle end.The 55k has (8) 5/8 studs on the axle end, but that has CRD 112 & 113 carriersThe 65k has (8) studs on the axle also and has CRD95 & 96 carriers.Thanks R609 Quote Link to comment https://www.bigmacktrucks.com/topic/2360-r600-diff/#findComment-11765 Share on other sites More sharing options...
fjh Posted April 23, 2007 Share Posted April 23, 2007 Thanks R609A more reliable way to Identify 44 houseing ,is the 44 is cast steel ,the 38 is a welded housing! Quote Link to comment https://www.bigmacktrucks.com/topic/2360-r600-diff/#findComment-11896 Share on other sites More sharing options...
HK Trucking Posted April 23, 2007 Share Posted April 23, 2007 the 44 is cast steel ,the 38 is a welded housing!On the early models that is true, but more recently the 44's have been available with the pressed steel welded type housing or the cast steel type housing.The cast steel type housing is preferable because the pressed steel 44 housings are prone to cracking at the left side in the area where the diff bolts into the housing. Quote "If You Can't Shift It Smoothly, You Shouldn't Be Driving It" Link to comment https://www.bigmacktrucks.com/topic/2360-r600-diff/#findComment-11898 Share on other sites More sharing options...
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