MERCRUISER R/MR UPPER
  

Sierra

mercruiser mr, alpha
                            gear housing components exploded view
USE SELOC REPAIR MANUALS

Mercruiser Gear Housing Components Exploded View Diagram and Parts
Fits MR / Alpha
Figure # Description O.E.M. # Sierra #
1 Gear Housing 18-2401
2 Water Tube Guide 23-29804 18-3109
3 Bushing/Water Pump Housing 26-38970 * 18-3110
4 O-Ring, Upper Drive Shaft 25-30613 * 18-7158
5 Slinger 25-30271 18-7426
6 Stainless Steel Locknuts (3) 11-45592 18-3723
7 Washer (3) 12-36001 18-4270
8 Screw, Water Pump Body to Water Pump Base N/A
9 Upper Pump Housing 46-96148A1 18-3116
10 Insert Cup 48752 18-3114
11 Impeller 47-89984 18-3017
12 Gasket, Upper Water Pump to Wear Plate 27-85609-1 * 18-2915
13 Impeller Plate 32435 18-3117
14 Water Pump Base 46-44292A3 18-3420
15 Oil Seals, Water Pump 26-89238 * 18-2014
26-16977 * 18-2013
16 O-Ring, Water Pump 25-90011 * 18-7176
17 Gasket, Water Pump Base to Gear Housing 27-42631-1 * 18-2919
18 Retainer, Drive Shaft Bearing 824519 18-2346
19 Tapered Roller Bearing, Drive Shaft 31-36387A1 18-1143
20 Shim (s), Lower Drive Shaft Bearing 15-42637A1 18-2294
21 Drive Key, Water Pump Impeller N/A
22 Drive Shaft 45-42634 18-2180
23 Insert (2), Water Pickup 93423-1 18-3199
24 Screw, Insert to Gear Housing 10-76156 18-3197
25 Nut, Insert Screw 11-45812 18-2344
26 Screw, Trim Tab to Gear Housing NSS
27 Dowel Pin, Gear Housing to Drive Shaft Housing 10-30720 18-3226
28 Trim Tab 31640A1 18-6011
29 Screw, Gear Housing to Drive Shaft Housing 10-30206 18-2361
30 Nut (2), Gear Housing to Drive Shaft Housing 11-13439-1 18-2362
31 Oil Passage Seal 26-45577 * 18-2944
32 Gasket, Gear Housing Drain Screw 12-19183, 12-20260 * 18-2945
33 Plug, Oil Fill/Drain 10-79953A2 18-2244
34 Pinion Bearing 31-42647A1 18-1117
35 Lower Alpha Gear Set (Pinion Gear) 43-17064A2, 43-17064A3, 43-42934 18-2206
36 Anti-Galling Washer Pinion Gear 22-92721 18-2343
37 Pinion Nut 11-35921 18-3719
38 Shift Shaft Washer 12-29395 18-4267
39 Washer, Rubber Shift Shaft Bushing 12-31266 18-2340
40 Shift Bushing 23-30617A2 * 18-2154
41 O-Ring, Shift Shaft Bushing 25-25439 * 18-7153
42 Washer, Lower Shift Shaft NSS
43 Retaining Clip, Shift Shaft NSS
44 Stainless Steel Shift Shaft 77481-1 18-2150
45 Pin, Shift Crank - Gear Housing N/A
46 Shift Crank 76865 18-2130
47 Shift Spool Assembly 818349A1 ** 18-2286
48 Cotter Pin & Sleeve NSS 1
49 Retainer NSS 1
50 Washers NSS 1
51 Spring NSS 1
52 Shift Spool NSS 1
53 Clutch Shaft NSS 1
54 Shim (s) Forward Gear 15-47397A1 18-2285
55 Tapered Roller Bearing Set 31-35928A1 18-1159
56 Inner Bearing, Forward Gear 31-30895 18-1157
56A Retaining Clip, Inner Bearing
57 Lower Alpha Gear Set (Forward Gear/Pinion) 43-17064A2, 43-17064A3, 43-42934 18-2206
58 Spring, Retainer - Cross Pin 18-2348
59 Sliding Clutch 52-66063 18-2202
60 Cross Pin, Clutch to Actuating Shaft 24-30893 18-2348
61 Propeller Shaft 44-66060, 44-66060-3 18-2166
62 Lower Alpha Gear Set (Reverse Gear-NSS) 43-17064A2, 43-17064A3, 43-42934 18-2206
62A Spacer, Reverse Gear 23-824108                         N/S 18-2281
63 Thrust Ring, Bearing Carrier 68100-1 18-2342
64 Ball Bearing 30-88957A1 18-1155
65 O-Ring, Bearing Carrier 25-31534 * 18-7159
66 Needle Roller Bearing 31-30956 18-1158
67 Bearing Carrier 73020A-14 18-2191
68 Key, Locating - Bearing Carrier NSS
69 Oil Seals, Bearing Carrier 26-76868 * 18-2002
70 Tab Washer 14-18323 18-2298
71 Spanner Nut 79448 18-3751
72 Thrust Washer 13171, 77987 18-4220
73 Continuity Washer N/A
74 Brass Castle Washer 12-31211A2 18-3714
75 Tab Washer 14-31210, 14-816629 18-3200
76 Prop Nut 11-52707 18-3700
77 Gasket, Wear Plate to Water Pump Base 27-85608-1 * 18-2914
1 Pieces not sold separately, must be purchased as
** 18-2286 Kit consists of figure numbers 38a- 43
* Included in Seal Kit 18-2652 (Not Pictured)
N/A Not Available


R/MR
ALPHA

COMPLETE GEAR HOUSINGS



Website Builder