0383758 GEARCASE ASSEM. COMPLETE, Less driveshaft & p ump JOHNSON
20R69B, 20R70C, 25R69B, 25R70C
GEARCASE
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BRP JOHNSON entire parts catalog list:
- GEARCASE GROUP » 0383758
25R69B, 25R69D, 25RL69B, 25RL69D 1969
25R70C, 25R70E, 25RL70C, 25RL70E 1970
Information:
Illustration 1 g03324435
Front view
Table 1
Specification for 350-5223 Cylinder Block Gp    
Item     Qty     Part     Specification Description    
1     16     362-9677 Spacer Plate     During assembly, the bottom of spacer plates must be free of fuel, oil, water, gasket adhesives, assembly compounds, and any other contaminants.
Thickness is
12.333 mm (0.4856 inch).    
2     16     144-5692 Plate Gasket     During assembly, both sides of plate gasket must be free of fuel, oil, water, gasket adhesives, assembly compounds and any other contaminants.    
3     2     4W-4813 Plug     Torque to
100 15 N m (74 11 lb ft).    
4     1     350-1417 Cylinder Block     During assembly, top of cylinder block must be free of fuel, oil, water, gasket adhesives, assembly compounds, and any other contaminants.    
5     18     101-1198 Camshaft Bearing     All centerlines through oil holes in the camshaft bearings and the camshaft bearing junctions must be positioned that is shown in Illustration 1 for each side of the cylinder block.    
6     8     6V-3348 O-Ring Seal     Lubricate the bore lightly with the lubricant that is being sealed.    
A     32     8T-0099 Dowel     Extension of the dowel from the top face of the cylinder block is
21.0 0.5 mm (0.83 0.02 inch).    
B     16     197-7008 Dowel     Extension of the dowel from the top face of the cylinder block is
21.0 0.5 mm (0.83 0.02 inch).    
C     -     -     Bore in the cylinder block for the camshaft bearings is
98.000 0.020 mm (3.8583 0.0008 inch).    
D     -     -     Oil holes in the camshaft bearings must be positioned from the horizontal centerlines at an angle of 20 5 degrees. Refer to Illustration 1.    
E     -     -     New dimension from centerline of crankshaft bearing bore to bottom of block (pan rails) is
230.00 mm (9.055 inch).    
F     -     -     Bore in the block for the main bearings is
169.742 0.020 mm (6.6827 0.0008 inch).    
Illustration 2 g03324436
Right side view
Table 2
Item     Qty     Part     Specification Description    
7     4     5F-9657 O-Ring Seal     Lubricate the bore lightly with 5P-3975 Rubber Lubricant.    
G     3     7N-2047 Dowel     Extension of the dowel from the front face of the cylinder block is
6.0 0.5 mm (0.24 0.02 inch).    
H     2     4N-0683 Dowel     Extension of dowels from the rear face of the cylinder block is
19.0 0.5 mm (0.75 0.02 inch).    
J     2     7N-2044 Dowel     Extension of dowels from the front face of the cylinder block is
40.0 0.5 mm (1.57 0.02 inch).    
Illustration 3 g03324437
Table 3
Item     Qty     Part     Specification Description    
8     16     352-6061 Liner Seal     Assemble liner seals dry on clean and dry liner grooves.
Before assembly, cover seals with either P-80 Rubber Lubricant Emulsion or liquid soap.    
9     48     7N-2046 O-Ring Seal     Before assembly, cover seals with either P-80 Rubber Lubricant Emulsion or liquid soap.    
10     9     223-1696 Crankshaft Bearing Cap     Width of the crankshaft bearing cap is
340.030 0.015 mm (13.3870 0.0006 inch).    
11     36     7X-7925 Bolt     Use the following procedure in order to tighten the crankshaft bearing cap bolts:
Install main bearing caps with the cast part number and FRONT toward the front of the block. Each cap has a number. Each cap must be installed in the same position as the correct number on the side of the cylinder block pan rail.
1. Before assembly, lubricate the threads completely with clean engine oil.
2. Hand tighten bolts in the tapped holes.
3. Tighten bolts in the numerical sequence as shown in Illustration 3 to
190 14 N m (140 10 lb ft).
4. Again, tighten each bolt to an additional angle of 180 5 degrees.    
K     -     -     Width in the cylinder block for crankshaft bearing cap is
339.985 0.0
Parts gearcase JOHNSON:
0383757
0383757 GEARCASE HEAD ASSY.
20R69B, 20R70C, 20R71S, 20R72R, 20R73A, 25E72R, 25E73A, 25E74M, 25E75B, 25E76E, 25R69B, 25R70C, 25R71S
0383851
0383851 GEARCASE & BEARING ASSEMBLY
20R69B, 20R70C, 20R71S, 20R72R, 20R73A, 25E72R, 25E73A, 25E74M, 25E75B, 25E76E, 25R69B, 25R70C, 25R71S