Service manual
ENGINE
INSPECTION
2.
Cylinder Liner Replacement. Hydraulic press or similar
device is needed.
a. Attach the cylinder liner puller and installer to the .
lower rim
of
the cylinder liner, then press out the liner.
h.
Check for scratches
on
the cylinder block side and,
if
any, remove them by using extremely fine emery paper
with engine oil.
c.
To
install the liner, apply engine oil on the cylinder
block bore and the liner exterior, then set the liner on
the cylinder block.
Using the cylinder liner puller and
installer, press the liner into the cylinder block.
NOTE:
Press
the
liner
in
straight.
When
press fitting
the
liner,
keep
the
pressure within a
range
of2,200-6,600lb.
Measure the liner protrusion and correct it
if
necessary.
Protrusion
Limits
0.0040
- 0
in
(0.101
- 0
mm)
LINER
PISTON
AND
PISTON
RING
1.
Visual Inspection. Check the sliding surface and
ring groove
of
the piston for wear, scratches
or
any
other damage.
a. Inspecting the clearance between the piston and the
cylinder liner.
h.
Check the clearance between the piston and the cylin-
der liner by measuring the cylinder bore and the piston
diameter and,
if
the clearance exceeds the limit, replace
the cylinder liner and the piston.
DIAL
INDICATOR
GAUGE
Side
Clearance
0.0017
-
0.0028
in
(0.032
-
0,083
mm)
c. Measure the piston diameter at 90° (perpendicular) to
the pin bore axis and
0.866in (22mm) below the piston
top.
SUB
COMBUSTION
CHAMBER
Standard
Piston
Diameter
3.7381
-
3.7399
in
(94.967
-
94.993mm)
2.
Piston Ring Inspection. Check the piston ring for
breaks, seizure and wear and,
if
any
of
these conditions
exist, replace the ring. Check the clearance between the
piston ring and the ring groove and,
if
it
exceeds the
limit, replace the ring.
PISTON
RING
Side
Clearance
Limit
0.012
in
(O.30mm)
3. Inspecting the piston ring end gap. Position the piston
ring into the bottom
of
the cylinder liner. Measure the
piston ring end gap and,
if
it
exceeds the limit, replace the
ring. Be sure to position the piston ring below the ring
sliding surface
of
the cylinder liner.
Piston
Ring
End
Gap
Limit
0.591
in
(1.5mm)
Engines & Generators
18