NANO

147 / 1904

ENGINE 273 MPFI
141
ENGINE
• Apply oil on piston side, piston ring, cylinder bore
& bearing shells.
• Turn crank shaft & bring crank pin journal to the
top most position on to which connecting rod with
piston is to be fitted.
• Clamp piston ring compressor over piston rings
such that piston with piston rings can slide inside
it.
• Insert connecting rod and piston assembly up to
piston ring into cylinder bore with arrow on piston
crown pointing towards front.
• Push piston gradually inside cylinder bore by hand
or if required using wooden handle of mallet gently
till connecting rod locates on crank pin journal.
Slowly rotate crank shaft, simultaneously pushing
piston till crank pin journal reaches BDC position.
• Install connecting rod bearing cap with bearing
shells on connecting rod ensuring that bearing shell
lugs are on same side.
• Tighten connecting rod bearing mounting bolts to
specified torque.
• Measure piston protrusion above crank case with
the help of piston topping gauge and it should be
within specified limit.
NOTE
Piston topping : 0.40 - 0.60 mm