Kohler RH255 Service Manual page 41

Crankcase Components
R
A
B
A Closure Plate Oil Seal
E End Cap
I Piston Pin
M Governor Washer
Q Crankcase Oil Seal
Remove Closure Plate
1. Remove screws securing closure plate to crankcase.
2. Locate splitting tab cast into perimeter of closure
plate. Insert drive end of a 1/2" breaker bar between
splitting tab and closure plate and turn it to break
RTV seal. Do not pry on sealing surfaces as this can
cause leaks.
Inspection
Inspect oil seal in closure plate and remove it if it is worn
or damaged. New oil seal can be installed after closure
plate is assembled to crankcase. See Reassembly for oil
seal installation instructions.
Inspect main bearing surface for wear or damage (refer
to Specifi cations). Replace closure plate if required.
18 690 06 Rev. --
D
C
B Closure Plate
F Connecting Rod
J Piston Ring Set
N Governor Shaft
R Dowel Pin
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Disassembly/Inspection and Service
P
O
N
M
L
K
I
H
E
G
F
C Camshaft
G Piston Pin Retainer
K Tappet
O Governor Gear
Remove Camshaft and Valve Tappets
1. Remove camshaft by pulling it straight out of
crankcase.
2. Remove valve tappets by pulling straight out of
crankcase. Mark their positions.
Inspection and Service
Inspect gear teeth of camshaft. If teeth are badly worn
or chipped, or if some are missing, replacement of
camshaft will be necessary. If unusual wear or damage
is evident on either camshaft lobes or mating tappets
camshaft and both tappets must be replaced. Check
condition and operation of Automatic Compression
Release (ACR) mechanism.
Q
J
D Crankshaft
H Piston
L Governor Cup
P Governor Cross Shaft
41