Crankcase, Crankshaft And Piston - LONCIN LC2V80FD Maintenance Manual

Chapter V Disassembly & Repair

5-2-9 Crankcase, crankshaft and piston

Disassembly/assembly
Speed-regulating gear
Assembly:
. Check if the speed-regulating gear is
worn or damaged prior to installation.
. Confirm if the speed-regulating gear
rotates flexibly without obvious axial
drifting after installation.
Bolt M8 × 50
Torque: (25 ~ 30) N•m
Crankcase cover
Piston
Assembly:
▽
Point the " " mark at the top of the
piston to the opposite direction of
rotation of crankshaft (seen from the
output end of engine, the piston
arrow of the right cylinder is
downward and the piston arrow of
the left cylinder is upward).
Oil-level
gauge
Crankcase-cover
sealing gasket
Engine-oil filter screen
Dirty or damaged one
shall be cleaned or
replaced immediately.
Connecting rod
Assembly: coat adequate lubricating oil
on the bigger end hole in a full circle.
Connecting-rod boss has the same
direction with that of the piston arrow
while the other is opposite.
- 54 -
Camshaft
Align the gear of camshaft
with the timing gear on the
crankshaft during installation.
Comparison mark
Crankshaft part
Assembly:
Don't damage the oil
seal during installation.
Speed-regulating arm
Assembly:
Confirm if the
action is smooth
after installation.
Connecting-rod
bolt
Torque:
12 N.m±1 N.m
Crankcase body