Honda Ridgeline. Manual — part 46
04
01
SJC8A00A18300024751LBAT00
−
−
Piston-to-Cylinder Bore Clearance
Standard (New): 0.015
0.040 mm
(0.0006
0.0016 in.)
Service Limit:
0.08 mm (0.003 in.)
7-17
7-17
Cylinder Bore Honing
SERVICE LIMIT
0.08 mm (0.003 in.)
60 °
7. Calculate the difference between cylinder bore
diameter and piston diameter. If the clearance is
near or exceeds the service limit, inspect the piston
and cylinder bore for excessive wear.
1. Measure the cylinder bores (see step 4 on page
7-16). If the engine block is to be reused, hone the
cylinders and remeasure the bores. Only scored or
scratched cylinder bores must be honed.
2. Hone the cylinder bores with honing oil and a fine
(400 grit) stone in a 60 degree crosshatch pattern.
NOTE:
• Use only a rigid hone with 400 grit or finer stone,
such as Sunnen, Ammco, or equivalent.
• Do not use stones that are worn or broken.
3. When honing is complete, thoroughly clean the
engine block of all metal particles. Wash the
cylinder bores with hot soapy water, then dry and
oil them immediately to prevent rusting. Never use
solvent, it will only redistribute the grit on the
cylinder walls.
4. If scoring or scratches are still present in the
cylinder bores after honing to the service limit,
rebore the engine block. Some light vertical scoring
and scratching is acceptable if it is not deep enough
to catch your fingernail and does not run the full
length of the bore.
01
02
03
SJC8A00A18360200000KBAT00
Disassembly
7-18
Engine Block
Piston, Pin, and Connecting Rod Replacement
A
B
A
1. Remove the piston from the engine block (see page
7-12).
2. Apply new engine oil to the piston pin snap rings
(A) and turn them in the ring grooves until the end
gaps are lined up with the cutouts in the piston pin
bores (B).
NOTE: Take care not to damage the ring grooves.
3. Remove snap rings (A) from both sides of the
piston. Start at the cutout in the piston pin bore.
Remove the snap rings carefully so they do not go
flying or get lost. Wear eye protection.
4. Heat the piston and connecting rod assembly to
about 158 °F (70 °C), then remove the piston pin.
04
05
06
07
−
−
−
+
−
+
−
−
Inspection
Piston Pin Diameter
Standard (New): 21.962
21.965 mm
(0.8646
0.8648 in.)
Service Limit:
21.954 mm (0.8643 in.)
Piston Pin-to-Piston Clearance
Standard (New):
0.0050 to
0.0010 mm
(
0.00020 to
0.00004 in.)
Service Limit:
0.004 mm (0.0002 in.)
Piston Pin-to-Connecting Rod Clearance
Standard (New): 0.005
0.014 mm
(0.0002
0.0006 in.)
Service Limit:
0.019 mm (0.0007 in.)
7-19
NOTE: Inspect the piston, piston pin, and connecting
rod when they are at room temperature.
1. Measure the diameter of the piston pin.
2. Zero the dial indicator to the piston pin diameter.
3. Check the difference between the piston pin
diameter and piston pin hole diameter on the
piston.
4. Measure the piston pin-to-connecting rod clearance.
(cont’d)
08
09
10
Reassembly
7-20
Engine Block
Piston, Pin, and Connecting Rod Replacement (cont’d)
A
C
C
D
A
B
1. Install a piston pin snap ring (A) only on one side.
2. Coat the piston pin bore in the piston, the bore in
the connecting rod, and the piston pin with new
engine oil.
3. Heat the piston to about 158 °F (70 °C).
4. Assemble the piston (A) and connecting rod (B)
with the embossed marks (C) on the same side.
Install the piston pin (D).
5. Install the remaining snap ring.
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