Kohler K9J Service Manual page 120

shim spacers as necessary to obtain the
proper end play.
4. K-Series engines now use a new camshaft pin,
the new camshaft pins are shorter than the old
pins originally used in K-Series engines.
Figure 12-7. Measuring Camshaft End Play.
To install the new (shorter) camshaft pin, drive
the camshaft pin from the bearing plate side of
crankshaft into the PTO side of crankcase:
a. For Models K161 and K181 - drive the cam-
shaft pin to a depth of . 275" /. 285" from the
machined bearing plate gasket surface.
b. For Models K241, K301, K321, and K341 -
drive the camshaft pin to a depth of
. 300" /. 330" from the machined bearing plate
gasket surface. Refer to Figure 12-8.
PTO Side
Bearing Plate Side
Figure 12-8. Installing Camshaft Pin.
To install the old (longer) camshaft pin, drive the
camshaft pin into the crankcase until the PTO end
of camshaft pin is flush with the mounting surface
on PTO side of crankcase.
INSTALL BALANCE GEARS
On Engines So Equipped
NOTE: The balance gears must be timed to the
crankshaft whenever the crankshaft is installed.
Use a balance gear timing tool to simplify this pro-
cedure (refer to the "Special Tools" section in this
manual}. If the balance gears must be timed with-
out using the tool, do not install the lower balance
gear (closest to the oil pan) until after the crank-
shaft has been installed.
Refer to "INSTALL CRANKSHAFT" for specific
timing procedures.
1. Install the 3/8" spacer, one .010" shim
spacer, balance gear, one .020" shim spacer,
and retaining ring (rounded edge towards bal-
ance gear) . Refer to Figure 1 2-9. A new style
needle bearing is now being used on the K-
Series balance gear assembly.
NOTE: Extreme care must be taken when handling
the new needle bearings or when removing bal-
ance gears containing the new bearings. The nee-
dles are no longer caged and will drop out. If this
should occur, the bearing case should be greased
and the needles reset. There are 27 individual
needles in each bearing.
p
L...-----111
Figure 12-9. Installing Balance Gears.
2. Check end play with a flat feeler gauge. Refer
to Figure 12-10. Recommended end play is
.002"/.010". If end play is not within range,
install or remove . 005" and . 01 0" spacers*,
as necessary.
*Balance gear spacer kit, Kohler Part 47 755 01,
contains enough 3/8", .005", .010", and .020"
spacers to obtain correct end play for both bal-
ance gears.
12.3