MAINTENANCE MANUAL OF ENGINE
49
3.3 Dismantling the cylinder liner
Special tools:
Tools for dismantling/ replacing the cylinder liner
Several cylinder liners shall be dismantled, or
pressing machine shall be used when the cylinder
linear for installation and production is too tight;
when dismantling single cylinder liner, or when
crankshaft is kept in installation position, manual
operating tool shall be equipped.
1. Discharge lubricating oil and dismantle lubricat-
ing oil sump.
2. Dismantle cylinder head assembly.
3. Dismantle piston and connecting rod assembly.
4. Rotate the crankshaft to touch the cylinder liner
to protect crank pin.
5. Place the tool D on cylinder top surface and in
the middle of cylinder liner E so as to guarantee that
tool base does not press the top of neighboring cyl-
inder liner flange.
6. Place the bearing C into groove at the top of tool
so that plane of bearing will face the bottom of side
groove.
7. Install screw B through bearing and tool top so
that handle A is in the groove at the top of bearing.
Adjust the screw at this position to make the end
lower than bottom of cylinder liner. Install the joint
F onto screw and jack the bottom of cylinder liner
so as to guarantee that two lugs at the top of joint
will be stuck in screw plane. Install gasket and nut
and fasten the nut onto joint.
8. Lubricate the handle ratchet and screw by lubri-
cating oil or similar lubricating oil. Operate the
handle and drag out the cylinder liner from top of
cylinder body.
9. Take out cylinder liner A.
A-Cylinder liner
A-Screw B-Handle C-Bearing D-Special tool
E-Cylinder liner F-Joint
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