Westerbeke W-46 - Page 41

INSPECTION/REPAIR
b. Drive idler shaft (2) into
crankcase by using. installer
(B) •
c. Lightly apply engine oil to
the crankpins and install
main bearings (upper).
Securely engage the bearings
with the crankpins.
3. Install the piston assembly as
follows:
Install upper connecting-rod
bearing (1) in to the large end
of connecting rod. Apply
engine oil to the internal sur-
face of bearing and on the
external periphery of piston.
Position piston rings so that
ring gaps are located 90" in
relation to each other, as
shown. Then insert piston
assembly (2) into crankcase.
Alignment marks on the con-
necting rod must face the
camshaft side. Put attaching
capscrews (3) into rod in
advance. Insert piston
assembly into its cylinder with
the aid of a piston/ring
installing tool.
(NOTE: Piston/rod assembly is
installed from crankshaft side
of engine block.)
1-w-/WESTERBEKE
. l Engines & Generators
39
No.1 ring gap
Precombustion chamber side