EM -50 ENGINE DOHC
DISASSEMBLY EEDFC26E
CONNECTING ROD CAP
CAUTION
Keep the bearings in order with their correspond-
ing connecting rods (according to cylinder num-
bers) for proper reassembly.
1. Remove the connecting rod cap bolts, then remove
the caps and the big end lower bearing.
2. Push each piston connecting rod assembly toward the
top of the cylinder.
Notches
KFW
3049A
DISASSEMBLY AND REASSEMBLY OF THE
PIS
TON PIN
1. Using the special tools, disassemble and reassemble
the piston and connecting rod.
2. The piston pin is press fit into the rod little end, and
thepistonfloatsonthepin.
3. The
tool consists of a support fixture with fork inserts,
gui
des, adapters, an installer and a remover. The
pis
ton is supported in the support fixture while the pin
is
being installed or removed. Guides help position
th
e pin as it is installed or removed, while the rod is
su
pported by fork inserts.
4. To remove the pin from the piston, place the piston
in the support fixture with the rod resting on the fork
inserts. Pass the remove tool through the top of the
support fixture and use it to press out the pin.
Remover
Support fixture
Support fork
EDA9048A
5. To install a new pin, the proper fork inserts must be in
place to support the rod.
6. Position the rod inside the piston. Insert the proper
pin guide through one side of the piston and through
the rod.
Hand tap the pin guide so it is held by the piston.
Insert the new pin into the piston from the other side
and set the assembly into the support fixture with the
pin guide facing down.
NOTE
The pin guide should be centered on the connecting
rod through the piston. If assembled correctly, the pin
guide will sit exactly under the center of the hole in the
tool’s arch, and rest evenly on the fork inserts. If the
wrong size pin guide is used, the piston and pin will
not line up with the support fixture.
Pin guide
Installer
Piston pin
ECA9361C
ZENITH POWER PRODUCTS - 416
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