13
STEP 15:
Remove the connecting rod and piston through the top
of the crankcase.
STEP 16:
To remove the connecting rod from the piston, use a
sharp-pointed tool to remove the small metal G-clip in
the side of the piston. Do not re-use the old G-clip.
When installing a new connecting rod, use the sup-
plied new G-clip.
STEP 21:
Remove the crankshaft by pulling it straight out of the
crankcase.
STEP 22:
The bearings are press-fit into the crankcase. To
remove them, the crankcase must be heated with a
heat gun or torch.The crankcase will expand with heat
and release the bearings. To avoid the possibility of
burns or other damage, do not attempt remove the
bearings. Clean the bearings by flushing them with
denatured alcohol and then place one or two drops of
after-run oil on the races.
STEP 23:
Before installing a new connecting rod, you can
increase connecting rod life by polishing the crank-
shaft journal. Use 1200 grit sandpaper to remove the
surface scratches followed by liquid metal polish to
buff the crankshaft journal to a bright, smooth shine.
Rinse thoroughly with Traxxas Nitro Wash or dena-
tured alcohol. Lube with after-run oil.
STEP 24:
Use the 1200 grit sandpaper and the liquid metal pol-
ish on the wrist pin also. Rinse thoroughly with dena-
tured alcohol and lube with after-run oil.
STEP 13:
Pull the sleeve straight up and out of the crankcase. If
the sleeve will not move, rotate the crankshaft until the
sleeve pushes up.
STEP 14:
Rotate the crankshaft to bottom dead center. Lightly
grab the connecting rod with a pair of needlenose pli-
ers and gently pull it off of the crankshaft journal.
STEP 17: Removing the clutch and flywheel
It is not necessary to remove the clutch assembly
unless you are servicing the clutch, crankshaft, or
engine bearings. Use the tip of a small screwdriver to
remove the E-clip which holds the clutch bell gear.
Remove the clutch bell gear and the clutch shoes.
each side of the clutch bell gear. Check the clutch
shoes for excessive wear or
cracking around the pin
holes. If the clutch shoes
are worn to the point that
the clutch spring contacts
the clutch bell, then the
shoes must be replaced.
STEP 19:
Grip the flywheel with a pair
of pliers (locking pliers work
best). Remove the clutch
adapter nut with a 10mm
deep socket. Hold the
engine just above your
workbench and tap the fly-
wheel from behind with a
non-marring hammer (plastic or wood). Several easy
blows may be necessary to release the flywheel and
split beveled cone.
STEP 20:
The flywheel and the split-beveled cone should pull
smoothly off of the crankshaft.
