Page 859 - 2021 Sierra Catalog

I/O — MERCRUISER - #1-R Gear Housing Components
Figure # Description Part # OEM # Qty. Figure # Description
Part # OEM # Qty.
1
2
3
4
5 Slinger 18-7426 25-30271 1
Lower Gear Housing
Water Tube Guide
Bush Water Pump Housing O-Ring, Upper - Drive Shaft
Oil Passage Seal
Dowel Pin, Gear Housing to Drive Shaft Housing
Screw, Gear Housing to Drive Shaft Housing
Nut Gear Housing to Drive Shaft Housing
Drain Screw Gasket
Drain Screw
Insert, Water Pick (Stbd) Insert, Water Pick (Port) Screw Insert to Gear Housing Nut, Insert Screw
Trim Tab
Screw, Trim Tab to Gear Housing
Needle Roller Bearing
Lower Unit Gear Set (pinion gear)
Pinion Nut
Shift Crank
Shift Spool Assembly
Shim Kit, Forward Gear Bearing
Tapered Roller Bearing
Needle Roller Bearing
Lower Unit Gear Set (Forward)
Spring, Retainer, Cross Pin
Sliding Clutch
Cross Pin, Clutch to Clutch Actuating Shaft
18-2944 N/A
18-2361
N/A
18-2945 18-2244 N/A
N/A 18-3197 18-2344 18-6011 18-6245 N/A 18-2200 18-3719 18-2130 19755A2 18-2285 18-1159 18-1157 18-2200 18-2348 18-2202 18-2348
26-45577 1 17-35973 2
10-30206 1 11-82671015 2
12-19183, 12-20260 1 10-79953A2 1 66885 1 66884 1 10-76156 1 11-45812 1 31640A1 1 10-32470 1 31-92366A1 1 23-96084A4 1 11-35921 1 76865 1 18-2286 1 15-47397A1 1 31-35928A1 1 31-30895 1 23-96084A4 1 24-30893 1 52-66063 1 17-30632 1
10
11
12
13 Impeller 18-3017 47-89984 1
Washer, Water Pump Body Upper Pump Housing Insert Cup
N/A 1623-5356A4
18-3109 23-29804
18-3110 26-38970 1 18-7158 25-30613 1
1 41 1 42
43 44
45 46 47 48 49 50 51 52 53 54 55 56 57
6
7
8 Washer 18-4275 12-29245 3 9 Screw 18-3226 10-30720 1
Stainless Steel Locknuts (5/16-24)
18-3723 11-45592
1
Stainless Steel Locknuts (1/4-28)
18-3722 11-20361, 11-35888 2
18-4270 12-36001 1 18-3116 46-96148A1 1 18-3114 48752 1
14 15
16 17
18 19 20 21 22
23
24
25 Spring N/A 24-34576 1
Drive Key
Gasket, Upper Water Pump to Wear Plate (upper)
Impeller Plate
Gasket, Upper Water Pump to Wear Plate (lower)
Dowel Pin
Water Pump Base
Oil Seal (upper)
Oil Seal (lower)
O-Ring (2.175 ID) & (2.1091 ID)
Gasket, Water Pump Base to Gear Housing
N/A 28-56654 1 18-2915 27-85609-1 1
18-3117 32435 1 18-2914 27-85608-1 1
18-3227-9 17-35973
18-3417 46-57234A1
18-2026 26-16977
18-2014 26-89238
18-7176, 25-90011 18-7196
2 58 1 59 1 60 1 61 1 62
18-2826 27-85610-1 1
63 64
Pin, Driveshaft
N/A 17-30545 1
Propeller Shaft
Lower Unit Gear Set (reverse) Thrust Ring, Bearing Carrier Ball Bearing
44-66060, 44-66060-3 1 43-96084A4 1 35915 1 30-88957A1 1
26 27 28 29 30
Tapered Roller Bearing
Shim Kit, Drive Shaft Bearing
Drive Shaft
Shift Shaft Washer
Washer, Rubber Shift Shaft Bushing
N/A 31-53079A1 1 18-2295 15-57007A 1 N/A 45-41939A1 1 18-4267 12-29395 1 18-2340 12-31266 1
65
66
67
68
69 O-Ring
18-2166
18-2200
18-3759
18-1155
18-7159 25-31534 1
31
32
33 O-Ring 18-7153 25-25439 1
Oil Seal
Shift Bushing
26-89236 18-2009 1 18-2154 23-30617A2 1
70 71 72 73 74 75 76
Needle Roller Bearing
Bearing Carrier Assembly Key, Locating - Bearing Carrier Oil Seals
Tab Washer
Spanner Nut
Thrust Washer
Continuity Washer
Brass Castle Washer
Tab Washer
Prop Nut
18-1158 18-2191 N/A 18-2002 18-2299 18-3751 18-4220 NSS 18-3714 18-3200 18-3700
31-30956 1 73020A14 1 28-30281 1 26-76868 2 14-79447 1 79448 1 13171, 77987 1 13-423511 1 12-31211A2 1 14-31210, 14-816629 1 11-52707 1
34
35 36 37
38 39 40
Washer, Lower Shift Shaft Bushing
Retaining Clip, Shift Shaft Stainless Steel Shift Shaft
Stud, Gear Housing to Drive Shaft Housing (1-31/32")
Stud, Water Pump to Gear Housing (3 - 3/8")
Stud, Gear Housing to Drive Shaft Housing (3 - 3/16")
Stud, Water Pump to Gear Housing (3 - 1/4")
N/A 12-27880 1
18-4295 53-29641 18-2150 77481-1 N/A 16-56298
1 77
1 78
2 79
N/A 16-562972 1 N/A 16-46911 1 N/A 16-69501 2
80
AR
As required
NSS Not Sold Seperate
841