Kohler K91 Service Manual page 120

shim spacers as necessary to obtain the
pro per end play.
4 . K-Series engines now use a new camshaft pin ,
the new camshaft pins are shorter than the old
pins orig inally used in K-Series engines .
Figure 1 2-7. Measuring Camshaft End Play.
To install the new (shorter) camshaft pin, drive
the camshaft p i n from the bearing plate side of
crankshaft i nto the PTO side of crankcase:
a . For Models K1 6 1 and K 1 8 1 - drive the cam­
shaft pin to a depth of
machined bearing p l ate gasket surface .
b . For Models K241 , K301 , K3 2 1 , and K34 1 -
drive the camshaft p i n to a depth of
from the machined bearing plate
. 3 00" I . 330"
gasket s u rface . Refer to Figure 1 2- 8 .
PTO Side
Figure 1 2 -8. Installing Camshaft Pin.
To install the old (longer) camshaft pin, drive the
camshaft pin into the crankcase until the PTO end
of cams haft pin is flush with the mounting s u rface
on PTO side of crankcase .
from the
. 275" 1 . 285"
Bearing Plate Side
INSTALL BALANCE GEARS
On Engines So Equipped
NOTE : The balance gears m ust be timed to the
crankshaft whenever the crankshaft is instal led .
Use a bala nce gear timing tool to s i m p l ify this pro­
cedu re (refer to the " Special Tools " section i n this
manual) . If the balance gears must b e timed with­
out using the tool , do not i n sta l l the lower balance
gear (closest to the oil pan) unt i l after t h e crank­
shaft has been instal led .
Refer to " I NSTALL CRANKSHAFT" for specific
timing procedures .
1 . I nstall t he 3 / 8 " spacer, o n e . 0 1 0 " shim
spacer, balance gear, one . 02 0 " shim spacer,
and retaining ring ( ro u nded edge towards bal­
ance gear) . Refer to Figure 1 2-9 . A new style
needle bearing is now being used on t h e K­
Series balance gear assem bly .
NOTE : Extreme care m u st be taken when handling
the new needle bearings o r when removing bal­
ance gears conta i n ing the new beari n g s . The nee­
dles are no longer caged and w i l l d rop out. If this
should occur, the bearing case should be greased
and the needles reset . There are 27 individual
needles in each bearing .
Figure 1 2 -9. Installing Balance Gears.
2 . Check e n d p l ay with a flat feeler gauge. Refer
to Fig ure 1 2- 1 0 . Recom mended end play is
If end play is not within rang e ,
. 002" 1 . 0 1 0" .
i nstall o r remove . 005 " a n d . 0 1 0 " spacers * ,
as necessary .
* Balance gear spacer kit , Kohler Part 47 755 0 1 ,
contains enough 3/8 " , . 005 " , . 0 1 0 " , a n d . 0 2 0 "
spacers to obtain correct e n d p l ay f o r b o t h bal­
ance gears .
1 2 . 3