14159 Mercury SPRING, CAM RETURN

Illustration 1 g01155119
Typical example
Table 1
Specifications for 365-2821 Piston    
Callout     Part Number     Part Name     Specification Description    
1     329-3779     Top Piston Ring     The shape of the top compression ring...................Keystone
Ring gap is
0.30 to 0.40 mm (0.01181 to 0.01575 inch).    
2     324-7463     Piston Ring     The shape of the compression ring...................Internal bevel in the bottom edge with a tapered face
Width of piston ring is
2.47 to 2.495 mm (0.0972 to 0.0982 inch).
Clearance of piston ring and piston groove is
0.065 to 0.110 mm (0.00256 to 0.00433 inch).
Ring gap is
0.65 to 0.85 mm (0.0256 to 0.0335 inch).    
3     363-4968     Oil Control Ring     Width of oil control ring is
2.97 to 2.99 mm (0.1169 to 0.1177 inch).
Clearance of oil control ring and piston groove is
0.03 to 0.07 mm (0.0011 to 0.0027 inch).
Ring gap is
0.30 to 0.55 mm (0.0118 to 0.0216 inch).    
-     330-9667     Piston     Piston height above the cylinder block is
0.55 to 0.20 mm (0.02165 to 0.00787 inch).
Width of top groove in the piston...................Tapered
Width of second groove in new piston is
2.56 to 2.58 mm (0.1008 to 0.1016 inch).
Width of second groove in new piston is
3.02 to 3.04 mm (0.1189 to 0.1197 inch).    
-     317-6214     Pin     Diameter of a new piston pin is
39.694 to 39.700 mm (1.5628 to 1.5630 inch).    Note: When you install a new top compression ring, make sure that the word "TOP" is facing the top of the piston. New top piston rings have a black identification mark. The identification mark must be on the left of the ring end gap when the top piston ring is installed on an upright piston.Note: When you install a new intermediate compression ring, make sure that the word "TOP" is facing the top of the piston. New intermediate rings have a blue identification mark. The identification mark must be on the left of the ring end gap when the top piston ring is installed on an upright piston.Note: When you install a new oil control ring, make sure that the word "TOP" is facing the top of the piston. New oil control rings have a red identification mark. The identification mark must be on the left of the ring end gap when the top piston ring is installed on an upright piston. The oil control ring is a two-piece ring that is spring loaded. A pin is used in order to hold both ends of the spring of the oil control ring in position. The ends of the spring of the oil control ring must be installed opposite the end gap of the oil control ring.Note: Ensure that the ring end gaps of the piston rings are spaced 120 degrees from each other.Note: An arrow which is marked on the piston crown must be toward the front of the engine.
Illustration 2 g01860862
Typical example
Illustration 3 g01860878
Typical example
Table 2
Specifications for 331-0292 Connecting Rod Gp    
Callout     Part Number     Part Name     Specification Description    
1     317-5482     Bearing     Thickness of connecting rod bearing at the center is
1.995 to 2.002 mm (0.07854 to 0.07882 inch).
Bearing clearance is
0.080 to 0.035 mm (0.00315 to 0.00138 inch).    
2     323-9312     Bolt     Torque to...................
40 N m (30 lb ft)
Tighten the bolts additional 120 degrees. The bolts must be replaced after this procedure.    
3     -     -     Diameter of the finished bore for the piston pin is
39.738 to 39.723 mm (1.5645 to 1.5639 inch).    
4     -     -     Distance between the parent bores is
219.05 to 219.1 mm (8.6240 to 8.6260 inch).    
5     -     -     Diameter for the finished bore for the connecting rod bearing is
76.025 to 76.038 mm (2.99310 to 2.99362 inch).    
6     331-0286     Connecting Rod     Grade Letter...................B
Grade Letter...................Blue
Length of the connecting rod is
161.107 to 161.140 mm (6.3428 to 6.3441 inch).    
Illustration 4 g01950657
Typical example (U) Day code (V) Code for the connecting rod (X) Code for the Connecting rod cap (Y) Year code (Z) Code for the grade of connecting rodNote: The day code is from the first day in the year. For example, "001" will be the first day of the appropriate year.The mating surfaces of the connecting rod are produced by hydraulically fracturing the forged connecting rod. Ensure that the cor