Kohler K91 Service Manual page 121

Fig u re Measuring Balance Gear End Pla
1 2-1 0.
IN STALL CRANKS HAFT
On Engines Without Balance Gears
1 . Lubricate the crankshaft rear bearing surface .
Insert the cran kshaft through the rear bearing .
NOTE : If the crankshaft and bearing plate have not
been separated , position the fuel line and wiring
harness between the bearing plate and crankcase
before pressing the cran kshaft all the way i n .
2 . Align t h e primary timing mark o n crankshaft
with the timing mark on camshaft . Refer to
Figure 1 2- 1 1 . Press the cran kshaft into rear
bearing . Make sure the camshaft and crank­
shaft gears mesh and that the timing marks
remain aligned while pressing.
On Engines With Balance Gears
K-Series engines have two styles of balance gear
assembl ies . To provide improved vibration reduc­
ing characteristics , redesigned balance gear as­
semblies are being used in the K24 1 , K30 1 , K3 2 1
and K34 1 single cylinder engines . These new bal-
Fig u re
1 2 . 4
y.
N EW
O l d And New Style Balance Gear Ass e m b l ies.
1 2-1 2 .
ance gear assemblies (Part N o . 45 043 03) are
being used in engines with a Serial No. of
1 6 1 36000 1 3 and later, and for service replace­
ment . Figure 1 2- 1 2 shows the physical differences
between the old and new style gear assemblies .
Fig u re 1 2-1 1 . Aligning Crankshaft And
Camshaft Timing Marks.
Because of the physical differences of the gear ,
new procedures for installing the cran kshaft , and
timing the balance gears , crankshaft , and cam­
shaft are req uired .
The following " INSTALL CRANKSHAFT"
dures are broken down into four sections ;
1 A) OLD STYLE BALANCE GEAR ASSEMBLY -
WITH A BALANCE GEAR TIMING TOOL
1 B) OLD STYLE BALANCE GEAR ASSEMBLY
WITHOUT A BALANCE GEAR TIMING TOOL
2A) NEW STYLE BALANCE GEAR ASSEMBLY
WITH A BALANCE GEAR TIMING TOOL
2B) BALANCE GEAR ASSEMBLY -
NEW STYLE
WITHOUT A BALANCE GEAR TIMING TOOL
METHOD
O L D
proce­
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