Honda Ridgeline. Manual — part 38
07
08
←
←
Camshaft Total Runout
Standard (New):
0.03 mm (0.001 in.) max.
Service Limit:
0.04 mm (0.002 in.)
Cam Lobe Height Standard (New):
6-39
FRONT BANK
REAR BANK
SEC MID PRI
EX
IN
EX
T/B
PRI
MID SEC
EX
IN
EX
T/B
11. Check total runout with the camshaft supported on
V-blocks.
• If the total runout of the camshaft is within the
service limit, replace the cylinder head.
• If the total runout is beyond the service limit,
replace the camshaft and recheck the oil
clearance. If the oil clearance is still out of
tolerance, replace the cylinder head.
12. Measure cam lobe height.
INTAKE
EXHAUST
PRI
35.041 mm
(1.3796 in.)
36.326 mm
(1.4302 in.)
MID
36.445 mm
(1.4348 in.)
SEC
35.284 mm
(1.3891 in.)
PRI: Primary
MID: Mid
SEC: Secondary
IN: Intake
EX: Exhaust
T/B: Timing Belt
01
02
03
04
SJC8A00A14680200000KAAT00
Special Tools Required
6-40
Cylinder Head
Valve, Spring, and Valve Seal Removal
B
A
07757-PJ1010A
A
Valve spring compressor attachment
07757-PJ1010A
Identify the valves and valve springs as they are
removed so that each item can be reinstalled in its
original position.
1. Remove the cylinder head (see page 6-28).
2. Using an appropriate-sized socket (A) and plastic
mallet (B), lightly tap the valve retainer to loosen
the valve cotters.
3. Install the valve spring compressor attachment and
valve spring compressor. Compress the spring and
remove the valve cotters.
4. Remove the valve spring compressor, valve spring
compressor attachment, spring retainer, and spring.
5. Install the valve guide seal remover (A).
6. Remove the valve seal.
7. Remove the valve spring seat and valve.
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SJC8A00A14680200000MAAT01
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SJC8A00A14680263001MAAT02
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Intake Valve Dimensions
A Standard (New): 34.90
35.10 mm
(1.374
1.382 in.)
B Standard (New): 115.70
116.30 mm
(4.555
4.579 in.)
C Standard (New): 5.485
5.495 mm
(0.2159
0.2163 in.)
C Service Limit:
5.455 mm (0.2148 in.)
Exhaust Valve Dimensions
A Standard (New): 29.90
30.10 mm
(1.177
1.185 in.)
B Standard (New): 113.90
114.50 mm
(4.484
4.508 in.)
C Standard (New): 5.450
5.460 mm
(0.2146
0.2150 in.)
C Service Limit:
5.420 mm (0.2134 in.)
Intake Valve Stem-to-Guide Clearance
Standard (New): 0.04
0.09 mm
(0.002
0.004 in.)
Service Limit:
0.16 mm (0.006 in.)
Exhaust Valve Stem-to-Guide Clearance
Standard (New): 0.11
0.16 mm
(0.004
0.006 in.)
Service Limit:
0.22 mm (0.009 in.)
Intake Valve Stem-to-Guide Clearance
Standard (New): 0.020
0.045 mm
(0.0008
0.0018 in.)
Service Limit:
0.08 mm (0.003 in.)
Exhaust Valve Stem-to-Guide Clearance
Standard (New): 0.055
0.080 mm
(0.0022
0.0031 in.)
Service Limit:
0.11 mm (0.004 in.)
6-41
6-41
Valve Inspection
Valve Stem-to-Guide Clearance
Inspection
A
B
C
1. Remove the valves (see page 6-40).
2. Measure the valve in these areas.
1. Remove the valves (see page 6-40).
2. Slide the valve out of its guide about 10 mm
(0.39 in.), then measure the guide-to-stem
clearance with a dial indicator while rocking the
stem in the direction of normal thrust (wobble
method).
• If the measurement exceeds the service limit,
recheck it using a new valve.
• If the measurement is now within the service
limit, reassemble using a new valve.
• If the measurement with a new valve still
exceeds the service limit, go to step 3.
3. Subtract the valve stem O.D. (measured with a
micrometer) from the valve guide I.D. (measured
with an inside micrometer or ball gauge).
Take the measurements in three places along the
valve stem and three places inside the valve guide.
The difference between the largest guide
measurement and the smallest stem measurement
should not exceed the service limit.
01
02
03
SJC8A00A14680263001KBAT00
Special Tools Required
6-42
Cylinder Head
Valve Guide Replacement
87 mm
(3.43 in.)
57 mm
(2.24 in.)
10.8 mm
(0.42 in.)
5.3 mm
(0.21 in.)
A
• Valve guide driver, 5.5 mm 07742-0010100
• Valve guide reamer, 5.5 mm 07HAH-PJ7A100
1. Inspect valve stem-to-guide clearance (see page
6-41).
2. As illustrated, use a commercially available air-
impact valve guide driver (A) modified to fit the
diameter of the valve guides. In most cases, the
same procedure can be done using the special tool
and a conventional hammer.
3. Select the proper replacement guides, and chill
them in the freezer section of a refrigerator for
about an hour.
4. Use a hot plate or oven to evenly heat the cylinder
head to 300 °F (150 °C). Monitor the temperature
with a cooking thermometer. Do not get the head
hotter than 300 °F (150 °C); excessive heat may
loosen the valve seats.
5. Working from the camshaft side, use the driver and
an air hammer to drive the guide about 2 mm
(0.1 in.) towards the combustion chamber. This will
knock off some of the carbon and make removal
easier. Hold the air hammer directly in line with the
valve guide to prevent damaging the driver. Wear
safety goggles or a face shield.
6. Turn the head over, and drive the guide out toward
the camshaft side of the head.
7. If a valve guide still won’t move, drill it out with a
8 mm (5/16 in.) bit, then try again.
NOTE: Drill guides only in extreme cases; you
could damage the cylinder head if the guide breaks.
8. Take out the new guide(s) from the freezer, one at a
time, as you need them.
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