5. Reinstall end play checking tool and recheck end
play.
Oil Pump Assembly
Oil pump is mounted inside closure plate. If service was
required, and oil pump was removed, refer to
Disassembly/Inspection and Service.
Governor Gear Assembly
Governor gear assembly is located inside closure plate.
If service was required, and governor was removed,
refer to Disassembly/Inspection and Service.
Thrust Bearing, Washer and Shim
Thrust Bearing, Washer, and Shim Sequence
D
A
B
C
E
A Thrust Shim B Thrust Washer
C
Needle Thrust
Bearing
D Bearing Race
E Closure Plate
Some specifi cations use a needle type thrust bearing,
thrust washer and shim spacer to control end play of
crankshaft. If these items are noted during disassembly,
make sure they are reinstalled in sequence shown. A
different procedure will have to be followed to check and
adjust crankshaft end play on these models.
Race for thrust bearing presses loosely into closure
plate. If it is not already installed, push it into crankshaft
bore inside closure plate. Pack thrust bearing with heavy
grease and stick bearing into race. Wipe some grease
on face of thrust washer and stick it onto thrust bearing.
Wipe some grease on face of original shim spacer and
stick it onto thrust washer.
Install closure plate onto crankcase without applying
RTV sealant and secure it with only two or three
fasteners at this time. Use a dial indicator to check
crankshaft end play. End play should be 0.05/0.50 mm
(0.0020/0.0197 in.), except for CH25 engines below
Serial No. 2403500008 end play should be
0.050/0.75 mm (0.0020/0.0295 in.). Shim spacers are
available in three color coded thicknesses listed below if
adjustment is needed.
Crankshaft End Play Shims
Green: 0.8366-0.9127 mm
(0.8750 mm/0.034 in. Nominal)
Yellow: 1.0652-1.1414 mm
(1.1033 mm/0.043 in. Nominal)
Red: 1.2938-1.3700 mm
(1.3319 mm/0.052 in. Nominal)
Remove closure plate. If end play requires adjustment,
remove original spacer and install appropriate size shim
spacer in its place. Then follow procedure under Install
Closure Plate Assembly.
Install Closure Plate Oil Seal
Oil Seal Depth
A
B
A Oil Seal B
Seal Depth
8.0 mm (0.314 in.)
1. Check to make sure there are no nicks or burrs in
crankshaft bore of closure plate.
2. Apply a light coat of engine oil to outside diameter of
oil seal.
3. Drive oil seal into closure plate using a seal driver.
Make sure oil seal is installed straight and true in
bore to depth shown.
Reassembly
74 24 690 06 Rev. CKohlerEngines.com
To Next Page
Loading...
