HONDA CR-V 1998 RD1-RD3 / 1.G Workshop Manual

Gylinder Head
Removal (cont'dl
'11. Remove the brake booster vacuum hose. fuel return
hose, and vacuum hose.
'97 - 98 modsls:
VACUUMHOSE
BRAKE BOOSTEBVACUUM HOSE
6-18
BRAKE BOOSTER
12. Remove the breather hose and oositive crankcase
ventilation (PCV) hose,
'97 - 98 models:
BREATHEBHOSE
PCV HOSE
'99 - 00 models:
BREATHERHOSE
PCV HOSE
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13. Remove the upper radiator hose, heater hose and
water bypass hose.
WATER BYPASS
UPPEBRADIATORHOSE
17
HEATERHOSE
Remove the engine wire harness connectors and
wire harness clamps from the cylinder head and the
intake manifold.
o Four fuel injector connectors
. Engine coolant temperature (ECT) sensor con-
neclor
. Radiator fan switch connector
. Coolant temperature gauge sendlng unlt connec-
tor
. Throttle position sensor connector
. Manifold absolute pressure {MAP) sensor con-
nector
Primary heated oxygen sensor (primary HO2S)
connector
ldle air control (lAC) valve connector
Distributor connector
Remove the spark plug caps and distributor from the
cylinder head.
Remove the cruise control actuator (see section 4).
Support the engine with a jack, then remove the
upper bracket. Make sure to place a cushion
between the oil pan and the iack (see page 6-10).
a
18. Remove the cylinder head cover.
19. Inspect the timing belt (see page 6-9).
CYLINDER
(cont'd)
6-19
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Cylinder Head
Removal (cont'dl
Remove the timing belt (see page 6-10).
Remove the camshaft pulleys and back cover.2't.
BACK COVER
6-20
22. Bemove the exhaust manifold
ing nuts.
'97 - 98 U.S. modsls (Californial:
GASKETReplace.
SELF.LOCKING NUT54 N.m {5.5 kgf.m, .{) lbf.ftlReplace.
'97 - 98 U.S. models {Excepi Calitornia}:'99 - 0O modeb:
GASKETSReplace.
bracket and self-lock-
'r
EXHAUST MANIFOLDBRACKET
10 x 1.25 mm44 N.m 14.5 kgf,m,33 rbf.ft)
SELF.LOCKING NUT10 x 1 .25 mm54 N.m {5.5 kgt.m, 40 lbtft}Replace.
10 x 1.25 mm4il N.m (4.5 kgf.m,33 tbf.ftl
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23. Remove the intake manifold mounting bolts and
water bvDass hose.
8 x 1.25 mm2,1 N.m 12.4 kgt.m,17 tbf.ft)
24. Loosen the locknuts and adjusting screws,
INTAKE
No.3 No.2 No. 1
No.3 No.2 No. 1
EXHAUST
No. 4
27. Remove the cylinder head.
6-21
25. Remove the camshaft holder bolts, then remove the
camshaft holders and rocker arms. Make note of the
rocker arm Dositions.
26. Remove the cylinder head bolts. To prevent
warpage, unscrew the bolts in sequence 1/3 turn at a
time; repeat the sequence until all bolts are loosened.
CYLINDER HEAD BOLTS LOOSENING SEOUENCE:
ROCKER ARM
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Camshafts
4.
Inspection
1.
7.
Loosen the adjusting screws.
Remove the camshaft holders.
Mark the rocker arms, then remove them.
Reinstall the camshaft and holders. Tighten the
camshaft holder bolts in a crisscross pattern, begin-
ning with the inner bolts.
9.8 N.m (1.0 kgf.m.7.2 lbf.ft)
Seat the camshafts by pushing them toward the dis-
tributor end of the head with a screwdriver.
Zero the dial indicator against the end of the
camshaft, push the camshaft back and forth and
read the end play.
Camshaft End Play:
Standard lNewl: 0.05 - 0.15 mm
10.002 - 0.005 in)
Service Limit: 0.5 mm (0.02 in)
Unscrew the camshaft holder bolts two turns at a
time, in a crisscross pattern, Then remove the
camshaft holder bolts from the cvlinder head.
Lift the camshafts out of the cylinder head. wipe
them clean, then inspect the lift ramps, Replace the
camshaft if any lobes are pitted, scored, or exces-
sively worn.
Clean the camshaft journal surfaces in the cylinder
head, then set the camshaft back in Dlace. Place aplastigage strip across each journal.
Install the camshaft holders. and torque the bolts tothe values and in the sequence shown on page 6-31.
NOTE: Do not rotate the camshafts during inspection.
8.
10.
6-22
11. Remove the camshaft holders. Measure the widest
portion of plastigage on each journal.
Camshatt-to HoldGr Oil Clearance:
Standard {Newl: 0.030 - 0.069 mm
{0.0012 - 0.0027 in}
Servico Limit: 0.15 mm (0.006 in)
12. lf camshaft-to-holder oil clearance is out of toler-
ance:
. And the camshaft has already been replaced,
you must replace the cylinder head.. lf the camshaft has not been replaced, first check
total runout with the camshaft suoDorted on V-
blocks.
Camshaft Total Runout:
Standard (N6w): 0.03 mm (0.001 in) max.
Service Limit 0.04 mm (0.(X)2 in)
Rotat6 camshattwhile measuring.
- lf the total runout of the camshafts is within tol-
erance, replace the cylinder head
- lf the total runout is out of tolerance, replace the
camshafts and recheck. lf the oil clearance is still
out of tolerance, replace the cylinder head.
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Valves, Valve Springs
and Valve Seals
13. Measure the cam lobe height.
Cam Lobe Height Standard (Newl'97 - 98 models:
INTAKE: 33.20,1mm (1.3072 in)
EXHAUST: 33.528 mm (1.3200 inl'99 - 00 models:
INTAKE: 33.716 mm 11.327t1in)
EXHAUST:33.528 mm (1.3200 in)
Inspect this area lor wear.
Removal
ldentify the valves and valve springs as they are
removed so that each item can be reinstalled in its origi-
nal Dosition.
1. Using an appropriate-sized socket and plastic mallet.
lightly tap the valve retainer to loosen the valve keeP
ers before installing the valve spring compressor'
2. Install the spring compressor. Compress the spring
and remove the valve keeper.
VALVE SPRING COMPRESSORKD No. 3&!. whh *'5 JAW o.
VALVE SPRING COMPRESSORATTACHMEUT07757 - PJ1010A
(cont'd)
6-23
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Valves, Valve Springs and Valve Seals
Removal (cont'dl
3. Install the valve guide seal remover.
VALVE GUIDE SEAL REMOVERLISLE P/N 57900 or KD3350 or equivalent(Commerciallv available)
4. Remove the valve seal.
6-24
Intake Valve Dimensions
A Standard {New}: 30.85 - 31.15 mm
B Standard (New):
G Standard {Newl:
C Service Limiti
D Standard lNewl:
D Service Limit:
B Standard (Newl:
C Standard {New):
C Service Limit:
D Standard lNewl:
D Service Limit:
11.21s - 1.226 inl
103.80 - 10/t.10 mm
{i[.087 - 4.098 in)
6.580 - 6.590 mm(0.2591 - 0.2594 in)
6.55 mm (0.258 inl
1.35 - 1.65 mm(0.053 - 0.05s in)
1.15 mm (0.045 in)
11.096 - 1.108 in)
10,1.00 - 10,1.30 mm(il.09i[ - it.l06 in)
6.550 - 6.560 mm
10.2579 - 0.2583 inl
6.52 mm (0.257 inl
1.65 - 1.95 mm
10.065 - 0.077 in)
1.45 mm (0.057 inl
Exhausi Valv€ Dimensions
A Standard (Newl: 27.85 - 28.15 mm
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Valve Guides
Valve Movement
1. Measure the guide-to-stem clearance with a dial
indicator while rocking the stem in the direction of
normal thrust (wobble method),
lntake Valve Stem-to-Guide Clearance:
Standard (Newl: 0.04 - 0.10 mm
(0.002 - 0.004 in)
Service Limit 0.16 mm (0.006 in)
Exhaust Valve Stem-to-Guide Clearance:
Standard {Newl: 0.10 - 0.16 mm
(0.004 - 0.006 inl
Service Limit: 0,22 mm (0.009 inl
lf the measurement exceeds the service limit,
recheck using a new valve.
lf the measurement is now within the service limit,
reassemble using a new valve.
lf the measurement still exceeds the limit, subtract the
O.D. of the valve stem, measured with a micrometer,
from the l.D. of the valve guide, 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 measure-
ment and the smallest stem measurement should
not exceed the service limit.
lntake Valve Stem-to-Guide Clearance:
Standard (New): 0.02 - 0.05 mm
{0.001 - 0.002 in)
Service Limit: 0.08 mm (0.003 in)
Exhaust Valve Stem-to-Guide Clearance:
Standard (New): 0.05 - 0.08 mm
(0.002 - 0.003 in)
Service Limit: 0.11 mm (0.004 in)
2.
3.
Replacement
1. As illustrated below, use a commercially available
air-impact valve guide driver attachment modified
to fit the diameter of the valve guides. In most
cases, the same procedure can be done using the
sDecial tool and a conventional hammer.
VALVE GUIDE DRIVER(Commerciallv available)
2.
3.
(0.25 inl I
_,1-r
,_T-_lrl
'11.3 mm(0.{,r in}
orVALVE GUIDE DRIVER, 6.6 mm0t9a:I - G5t01q)
Select the proper replacement guides. and chill
them in the freezer section of a refrigerator for
about an hour.
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 hofter
than 300'F (150"C); excessive heat may loosen the
valve seaIs.
6.4 mm
CAUTION: To avoid burns, uss heavy gloves when
handling the heated cylinder head.
(cont'd)
6-25
*]-- sz mm' l2.21inl
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Valve Guides
Replacement (cont'dl
5.
Working from the camshaft side, use the driver andan air hammer to drive the guide about 2 mm (O.l
in) towards the combustion chamber. This willknock off some of the carbon and make removaleasier. Hold the air hammer directly in line with thevalve guide to prevent damaging the driver.
CAUTION: Always wear satety goggles or a faceshield when driving valve guidss.
Turn the head over and drive the guide out towardthe camshaft side of the head.
li a valve guide won't move, drill it out with a 8.0mm (5/16 in) bit, then try again. Dritt guides onty inextreme cases; you could damage the cylinder headif the guide breaks.
Remove the new guide(s) from the freezer, one at atlme, as you need them.
6.
7.
6-26
'o C'
8. Apply a thin coat of clean engine oil to the outsideof the new valve guide. Install the guide from thecamshaft side of the head; use the special tool todrive the guide in to the specified installed height. lfyou have all 16 guides to do, you mav have toreheat the head.
Valve Guide Installed Height:
Intake: 13.75 - 1i1.25 mm
{0.5,[1 - 0.561 in)
Exhaust: 15.75 - 16.25 mm(0.620 - 0.640 inl
ATTACHMENT
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Cylinder Head
Reaming
NOTE: For new valve guides only.
1. Coat the reamer and the valve guide with cutting oil.
2. Rotate the reamer clockwise the full length of the
valve guide bore.
Continue to rotate the reamer clockwise while
removing it from the bore.
Thoroughly wash the guide in detergent and water
to remove anY cutting residue.
Check clearance with a valve (see page 6-25).
Verify that the valves slide in the intake and exhaust
valve guides without exerting pressure.
3.
4.
5.
6.
vALvE GUIDE REAMER,6.6 mm0798i1 - 657010O
REAMER HANDLE
e
Warpage
NOTE: lf camshaft-to-holder oil clearances (see page G22)
are not within specification, the head cannot be resur-
faced.
lf camshaft-to-holder oil clearances are within specifica-
tions, check the head for warpage. Measure along the
edges, and three ways across the center.
. if warpage is less than 0.05 mm (0.002 in) cylinder
head resurfacing is not required
lf warpage is between 0.05 mm (0.002 in) and 0.2 mm
(0.008 in), resurface cylinder head.
Maximum resurface limit is 0.2 mm (0.008 in) based
on a height of 132.0 mm (5.20 in).
Cylind€r Hesd Height:
Standard {New}: 131.95 - 132.05 mm
15.195 - 5.199 inl
PRECISION STRAIGHT EDGE
6-27
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