Parts Information - Eaton

1 Eaton Medium Duty Piston PumpParts InformationModel 74624 and 74644,82,6 cm3/r [ in3/r] Displacementdesign code B2 Model 74624 and 746443 Model 74624 and 74644 Identification andTools RequiredIdentification NumbersStamped on each Product Number Descriptions74624 = Fixed Motor 82,6 cm3/r [ in3/r]74644 = Fixed Motor thru Shaft for Brake Mount 82,6 cm3/r [ in3/r]B- Rotation,D = DualC- Sequential LettersD- Design Code NumberABCDS ingle Motor - Product Number7 4 6 2 4 - D A H - 0 1 Required Tools1/2 in. Socket, w/ Ratchet WrenchExternal Retaining Ring Pliers (straight .090 tip)Internal Retaining Ring Pliers (straight .090 tip)O-ring PickTorque Wrench (54 [40 ] capacity)Hammer (soft face)Light Petroleum JellySeal DriverTesters InitialsDay of Month(two digits)Month (two digits)Serial Number Code:B 93 01 31 JBRevision levelof Parts two digitsof year built.

2 ( 93 for 1993 etc.)4 Model 74624 and 74644 Parts ListItemPart to List1 Drive Shaft2 Refer to List1 Backplate Assembly3 Refer to List1 Housing Assembly474614-501 Rotating Kit Assembly - Refer to specific Parts list4a74614-521 Rotating Kit Assembly - Heat Treated - Refer to specific Parts list+~ 516009-1181 Retaining Ring+~ 6160015-571O-ring, 2,37 mm Dia. x 114,3 mm ID. [.0937 in. Dia. x in. ID.]774600-1021 Thrust Bearing874600-6002 Pivot974600-6011 Spider1074600-6031 Key1174604-59 Piston1274604-109 Piston Assembly1374604-591 Connector Plate1474600-6051 Spacer+~ 1516232-161 Shaft Seal1674600-1001 Bearing Race1774600-1101 Piston Race S/A1817140-11 Spring - Refer to specific Parts list18a17141-101 Spring - Refer to specific Parts list18b17142-11 Spring - Refer to specific Parts list1974600-6141 Pilot - Refer to specific Parts list19a74600-6201 Pilot - Refer to specific Parts list2074600-1041 Thrust Bearing2116241-D9161 Bearing Race2216032-5106 Cap Screws, 5/16-18, 25,4 mm [1 in.]

3 ] Long - Refer to specific Parts list22a16032-5144 Cap Screws, 5/16-18, 38,1 mm [ in.] Long - Refer to specific Parts list+~ 2316077-261 Retaining Ring2474600-103A/RTrust Race2524500-6281 Key - 74624-204, 74644-210 & 74644-215~ 2616078-162 Retaining Ring2716241-16251 Thrust Bearing2816241-C16252 Bearing Race~ 2916232-161 Shaft Seal~ 3016048-3361 Washer~ 3116077-261 Retaining Ring3216032-5202 Cap Screws, 5/16-18, 50,8 mm [2 in.] Long+~ 3316078-161 Retaining Ring3424500-6191 Key - Used with Shaft 74644-214 - Refer to specific Parts list34a16246-4301 Key - Used with Shaft 74644-209 & 74644-210 - Refer to specific Parts list3516103-1061 Plug S/A35-116133-61O-ring, 1,98 mm Dia.

4 X 11,89 mm ID. [.078 in. Dia. x .468 in. ID.]3616048-616A/RWasher3774600-115A/RWa sher3874640-6001 Spring CollarSeal Repair Kit+ 74640-904 Seal Repair Kit for 74624 rear or same side ported motor.~ 74640-910 Seal Repair Kit for 74644 Through shaft 74624 and 74644 Drive Shaft S/A - Item #1 Item # part NumberDescription1a74624-20015 Tooth 16/32 Spline with SnapRing Groove with Snap Ring, .375-16 UNC-2B Thread, [.72] MinFull Thread, Shaft Ext [ ]1b74624-20115 Tooth 16/32 Spline with SnapRing Groove, Shaft Ext 46 [ ]1c74624-202 Taper 1:8, Dia [ ], WoodruffKeyway Dia [ ] X [.250], .625-18 UNC-2A Thread,Shaft Ext 69 [ ]1d74624-20313 Tooth 16/32 Spline, Shaft [ ]1e74624-204 Straight Shaft , Dia.

5 25,4 [ ],Keyway 6,35 x 38,1 [.250 x ],Shaft Ext. 63,5 [ ]1f74624-20615 Tooth 16/32 Spline Tapered 1:8with .375-16 UNC-2B Thread, [.72] Min Full Thread, Shaft Ext 46[ ]Through Shaft (74644)Item # part NumberDescription1g74644-206 Front - 15 Tooth 16/32 Spline withSnap Ring Groove with Snap Ring,.375-16 UNC-2B Thread, [.72]Min Full Thread, Shaft Ext [ ]Rear - 15 Tooth 16/32 Spline, ShaftLength From Mounting Flange [ ]1h74644-209 Front - 15 Tooth 16/32 SplineTapered 1:8 with .375-16 UNC-2 BThread, [.72] Min Full Thread,Shaft Ext 46 [ ]Rear - Straight Shaft Dia [ ], Keyway X [.250 ], Shaft Length from MountingFlange [ ]1i74644-210 Front - Straight Shaft , Dia.

6 25,4[ ], Keyway 6,35 x 38,1 [.250 ], Shaft Ext. 63,5 [ ] (KeyIncluded)Rear - Straight Shaft Dia [ ], Keyway X [.250 ], Shaft Length from MountingFlange [ ]1j74644-212 Front - 15 Tooth 16/32 SplineTapered 1:8 with .375-16 UNC-2 BThread, [.72] Min Full Thread,Shaft Ext 46 [ ]Rear - 15 Tooth 16/32 Spline, UNC-2B Thread, [.72]Min Full Thread, Shaft Length fromMounting Flange [ ]1k74644-214 Front - 15 Tooth 16/32 Spline, ShaftExt 46 [ ]Rear - Straight Shaft Dia [.875], Keyway X [.250 ], Shaft Length from MountingFlange [ ] (Short KeyIncluded)1l74644-215 Front - Taper .125:1 Dia [.875], Woodruff Keyway Dia [.620] X [.156], .500-20 UNF-2A Thread, Shaft Ext [ ]Rear - Straight Shaft Dia [ ], Keyway X [.]

7 250 ], Shaft Length from MountingFlange [ ]1m74644-216 Front - Taper .125:1 Dia [.875], Woodruff Keyway Dia [.620] X [.156], .500-20 UNF-2A Thread, Shaft Ext [ ]Rear - Straight Shaft Dia [ ], Shaft Length from MountingFlange 254 [ ], Shaft End HoleInternal [.252] X 14 [.55] DeepBackplate S/A - Item #2 Item # part NumberDescription2a74624-301 Rear porting, through drain intomounting flange2b74624-305 Rear porting, drain port Horizontaltop rear of unit2c74624-315 Same side porting, drain portvertical top rear of unit, twomounting holes bottom rear2d74624-317 Same side porting, drain portvertical top rear of unitHousing for Through Shaft (74644)

8 Item # part NumberDescription2e74644-308 Same side porting, drain portvertical top rear of unitHousing S/A - Item #3 Item # part NumberDescription3a74624-303 Through drain into mounting flange3b74624-307No drain in housing3c74624-309 Special housing used with item 18#17141-10 and item 19 #74600-620. Also has slotted 2 bolt B 74624 Parts Drawing23153-116717114232322222222261312 919818363738513325102-121242120814322222 2222222267 Model 74624 Specific Parts List42647srebmuNtcudorPAAD-BAD-DAD-EAD-G AD-HAD-JAD-LAD-MAD-NAD-PAD-RAD-SAD-metIs '#s'#s'#s'#s'#1a1b1c1d1d1e1a1e1f1f1b1b1f 12a2b2b2b2b2b2b2c2c2d2b2b2d23a3b3b3c3b3b 3b3b3b3b3b3b3b3444444444444 a445 XXXXXXXXXXXXX6 XXXXXXXXXXXXX7 XXXXXXXXXXXXX8 XXXXXXXXXXXXX9 XXXXXXXXXXXXX01 XXXXXXXXXXXXX11 XXXXXXXXXXXXX21 XXXXXXXXXXXXX31 XXXXXXXXXXXXX41 XXXXXXXXXXXXX51 XXXXXXXXXXXX61 XXXXXXXXXXXXX71 XXXXXXXXXXXXX8181b81b81a81b81b81b81b8181 81b81b8191919191a9191919191a91a91919102 XXXXXXXXXXXXX12

9 XXXXXXXXXXXXX2222222222222222a22a22a2222 22a2232 XXXXXXXXXXXX42 XXXXXXXXXXXX52XX23 XXXX33XX63XX73XX83 XXXtiKriapeRlaeS04627409-409-409-409-409 -409-409-409-409-409-409-409-409-8 Model 74644 Parts Drawing - Through Shaft23153-11671711423232223535-12222226 131292628272826302931198183637385134102- 1814333259 Model 7464444647srebmuNtcudorPEAD-GAD-JAD-KAD- MAD-NAD-PAD-RAD-SAD-metIs'#s'#s'#s'#s'#1 g1h1i1j1k1l1m1j1j12e2e2e2e2e2e2e2e2e23b3 a3b3a3b3b3b3a3b344444444445 XXXXXXXXX6 XXXXXXXXX7 XXXXXXXXX8 XXXXXXXXX9 XXXXXXXXX01 XXXXXXXXX11 XXXXXXXXX21 XXXXXXXXX31 XXXXXXXXX41 XXXXXXXXX51 XXXXXX61 XXXXXXXXX71 XXXXXXXXX818181818181818181819191a9191a9 1a919191a91a9122a22a22a22a22a22a22a22a22 a2232 XXXXX52X62 XXXXXXXXX72 XXXXXXXXX82 XXXXXXXXX92 XXXXXXXXX03 XXXXXXXXX13 XXXXXXXXX23 XXXXXXXXX33X434343a4353 XXX63 XXXX73 XXXX83 XXXXXXXXXtiKriapeRlaeS04647019-019-019-0 19-019-019-019-019-019-Specific Parts List10 Model 74624 and 74644 Notes11 Model 74624 and 74644 Notes 2008 Eaton CorporationAll Rights ReservedPrinted in USAD ocument No.

10 E-MOPI-TP001-ESupersedes 06-161 October 2008 EatonFluid Power GroupHydraulics Business USA14615 Lone Oak RoadEden Prairie, MN 55344 USATel: 952-937-9800 Fax: Power GroupHydraulics Business EuropeRoute de la Longeraie 71110 MorgesSwitzerlandTel: +41 (0) 21 811 4600 Fax: +41 (0) 21 811 4601 EatonFluid Power GroupHydraulics Business Asia Pacific 11th Floor Hong Kong New World Tower 300 Huaihai Zhong Road Shanghai 200021 China Tel: 86-21-6387-9988 Fax: 86-21-6335-3912