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1946-1978 CJ Bearing Identification

by Ken "Oldtime" Bushdiecker
 

I have made some custom parts lists, including things like all bolts used, grease fittings, cotter pins and bearings. Of course the exact needs depend on which particular model is chosen and year, so the lists can and do vary. These lists were compiled from information gathered from the standard parts lists over a number of years. The list below includes bearings for all Jeep CJ models. It does not include engine bearing numbers or optional equipment.
 

GROUP 11-03........DESCRIPTION.....................................................SAE NUMBER
635529----------------L/F 134 clutch release----------------------------------Aetna 1697-1
G907588--------------D 225 diaphragm type clutch release--------------
994857----------------D 225 three finger type clutch release--------------

GROUP 14-04
636297----------------L 134 water pump shaft
808129----------------F 134 water pump shaft

GROUP 15-01
GM901203------------Autolite generator armature--------------------------Fafnir 203

GROUP 17-02
643721---------------T90 maindrive---------------------------------------------Fafnir 208 KG-2
912362---------------T98 maindrive---------------------------------------------MRC 308 SG 2
912362---------------T15/T18 maindrive----------------------------------------MRC 308 MG 4

GROUP 17-03
644551---------------T90 mainshaft---------------------------------------------Fafnir 307 K
640786---------------T90 mainshaft pilot rollers (qty 14)
991076---------------T15 mainshaft--------------------------------------------
941659---------------T15 mainshaft pilot rollers (qty 21)
912341---------------T98 mainshaft---------------------------------------------MRC 308 SG
912341---------------T18 mainshaft---------------------------------------------MRC 308 MG
912343---------------T98 mainshaft pilot rollers (qty 16)
912330---------------T98 second speed rollers (qty 34)
912345---------------T18 mainshaft pilot rollers (qty 22)

GROUP 17-04
991042---------------T15 reverse rollers (qty 22)
912354---------------T98 reverse rollers (qty74)

GROUP 17-05
640777---------------T90 countershaft rollers ( qty 88)
991042---------------T90 countershaft rollers ( qty 22)
912345---------------T98/T18 countershaft rollers ( qty 88)

GROUP 18-04
A-1007----------------D18 front output-----------------------------------------Fafnir 206 K
51575-----------------D18 main output cone (qty 2)-------------------------14131
52883-----------------D18/D20 main output cup (qty 2)---------------------14276
942113---------------D20 main output cone-----------------------------------

GROUP 18-05
642190----------------D18 @ 2.43 intermediate rollers (qty 2)
809294----------------D18 @ 2.46 / D20 intermediate rollers (qty 48)
933737----------------D20 rear output bearing cap cone--------------------
803054----------------D20 rear output bearing cap cup---------------------
52799-----------------D20 front output bearing cap cone--------------------
52800-----------------D20 front output bearing cap cup---------------------

GROUP 20-03
52880-----------------D25 differential carrier cone----------------------------24780
52881-----------------D25 differential carrier cup-----------------------------24721
925446----------------D27/D30 differential carrier cone---------------------LM 501349
926800----------------D27 differential carrier cup-----------------------------LM 501311
945341----------------D30 differential carrier cup-----------------------------LM 501314

GROUP 20-04
52876---807266-----D25 inner pinion cone----------------------------------31594
52877-----------------D25 inner pinion cup------------------------------------31520
52878-----------------D25 /D27A / D30 outer pinion cone------------------2872
52879-----------------D25 /D27A / D30 outer pinion cup--------------------2820
926802 (3)-----------D27* inner pinion cone---------------------------------
926804---------------D27* inner pinion cup-----------------------------------
926802---------------D27* outer pinion cone---------------------------------
945739---------------D27* outer pinion cup-----------------------------------
926803---------------D30 inner pinion cone-----------------------------------HM 88649
926805---------------D30 inner pinion cup------------------------------------HM 88610

GROUP 20-06
8121402--------------D30 axle/ spindle roller cage--------------------------B 2110

GROUP 20-07
52940-----------------D25/ D27 king pin cone--------------------------------11590
52941-----------------D25/ D27 king pin cup----------------------------------11520

GROUP 21-03
52979-----------------D41 / D44 (10-19 spline) differential carrier cone--25577
52980-----------------D41 / D44 (all) differential carrier cup----------------25523
805311----------------D44 (30 spline) differential carrier cone-------------25590

GROUP 21-04
807266----------------D44 inner pinion cone----------------------------------31594
52877-----------------D44 inner pinion cup------------------------------------31520
52878-----------------D44 outer pinion cone----------------------------------2872
52879-----------------D44 outer pinion cup------------------------------------2820

GROUP 21-05
52799-----------------D41 / D44 (10-19 spline) wheel cone----------------25877
52800 ----------------D41 / D44 (10-19 spline) wheel cup------------------25821
994261---------------D44 (30 spline) wheel cone / cup---------------------U399 / U360

GROUP 23-01
645664---------------bellcrank roller cage-------------------------------------182208

GROUP 23-02
801422---------------upper steering column set
639104---------------Ross column 5/16" balls (qty 22)
639102---------------Ross column cups (qty 2)

GROUP 25-03
52942-----------------D25 front wheel cone----------------------------------18590
52943-----------------D25 front wheel cup------------------------------------18520
925446---------------D27 / D30 front wheel cone----------------------------LM 501349
925447---------------D27 / D30 front wheel cup-----------------------------LM 501310
xxxxxxx---------------D30 front wheel inner cone (disk brakes only------LM 102949
xxxxxxx---------------D30 front wheel inner cup (disk brakes only)------LM 102910

BALL BEARING INTERCHANGE CHART

FAFNIR.......MRC.........SKF............TIMKEN..........FM...........BCA
203K..........203C.........xxx..............203AB............203..........203N3
206K..........xxx...........6206............206WB...........206..........206X3
208KG2......208SG......6208ZNR.....208SL............208SL.......208L3
307K..........xxx............6307...........307TB............307...........307X3
308KG........308SG.......6308NRJ.....308L..............308LI........308L3
308KG2......308SG2.....6308NRJX...308LI.............308LI........308LIN3

CLUTCH RELEASE INTERCHANGE / 134 WILLYS

AETNA........GREEN.......NICE........TIMKEN............FM..........BCA
1697-1...........CB1178......6048.........1505................xxx..........1505

CLUTCH RELEASE INTERCHANGE / DAUNTLESS 225

DIAPHRAGM TYPE.......3 FINGER TYPE
xxx........................................BCA 1505-1
 

Jimmy commented on the Bulletin Board: "Good job with those numbers. Any good bearing store should also be able to either measure the bearing or cross reference the stamped number and this also applies to the seals. Sometimes the metric and SAE measurement is similar so make sure to tell them it's SAE."

Henning Moen added, "Thank you Oldtime, your list will save many of us tons of money. Internet bearing wholesalers charge 1/2 the price the online recreational Jeep places charge, plus I can get the brand I want (Timken or TRW.) And they ship fast and rarely backorder."


Thanks to Oldtime for compiling this list. -- Derek Redmond


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Last updated 1 March 2013 by Derek Redmond redmond@cj3b.info
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