78
Reassembly
KohlerEngines.com
22 690 01 Rev. --
Install Piston to Connecting Rod
B
A
D
A
C
A
Piston Pin Retainer
B
Piston Pin
C
Piston Assembly
D
Connecting Rod
Assemble piston, connecting rod, piston pin, and piston
pin retainers.
Install Piston to Connecting Rod
Connecting Rod Fastener Torque Sequence
1
2
NOTE: Proper orientation of piston/connecting rod
inside engine is extremely important. Improper
orientation can cause extensive wear or
damage.
1. If piston rings were removed, see Disassembly/
Inspection and Service procedure to install rings.
2. Lubricate cylinder bore, crankshaft journal,
connecting rod journal, piston, and rings with engine
oil.
3. Compress piston rings using a piston ring
compressor. Orient FLY mark on piston toward
fl ywheel side of crankcase. Place ring compressor
on top surface of crankcase and make certain it is
seated down around entire circumference. Use a
soft, rubber grip hammer handle and tap piston/
connecting rod into bore. First tap should be rather
fi rm, so oil ring moves from compressor into bore in
one smooth, quick motion. Otherwise oil ring rails
may spring out and jam between ring compressor
and top of bore.
4. Guide connecting rod down and rotate crankshaft to
mate journals. Install rod cap.
5. Install screws and torque in 2 increments, in
sequence shown, fi rst to 5.5 N·m (50 in. lb.), fi nally
to 11.8 N·m (105 in. lb.).
Install Balance Shafts
Balance Shaft 1 Timing Mark Detail
B
A
B
A
A
Crankshaft Timing
Hole
B
Balance Shaft 1
Timing Hole
1. Rotate crankshaft clockwise (to move weights) and
install balance shaft 1 into crankcase aligning timing
hole in balance shaft 1 with timing hole on crank
gear.
Balance Shaft 2 Timing Mark Detail
A
B
A
B
A
Balance Shaft 2
Timing Dots
B
Balance Shaft 1
Timing Hole
2. Rotate crankshaft clockwise again (to move weights
toward oil pump) and install balance shaft 2 aligning
2 dots on balance shaft 2 with 1 hole in balance
shaft 1.
3. Rotate crankshaft to TDC.