2000 HONDA CR-V Intake

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.
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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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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)
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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.
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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
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.
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'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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Valve Seats
Reconditioning
lf the guides are worn (see page 6-25), replace them (seepage e25) before reconditioning the valve seats.
1. Renew the valve seats in the cylinder head using avalve seat cutter.
Carefully cut a 45o seat, removing only enoughmaterialto ensure a smooth and concentric seat.
Bevel the upper edge of the seat with the 30. cutterand the lower edge of the seat with the 60" cutter.Check width of seat and adjust acco.dingly.
Make one more very light pass with the 45o cutter toremove any possible burrs caused bv the other cut-ters.
Valve Seat Width (lntake and Exhaust):
Standard {N.w}: 1.25 - 1.55 mm (0.049 - 0.051 in)Servica Limit: 2.0 mm (0.08 in)
o
o
5. After resurfacing the seat, inspect for even valve
seating: Apply Prussian Blue compound to the valve
face, and insert the valve in its original location in
the head, then lift it and snap it closed against the
seat several times.
ACTUALSEATINGSURFACE
VALVESEAT
7.
PRUSSIAN
The actual valve seating surface, as shown by the
blue compound, should be centered on the seat.. lf it is too high (closer to the valve stem), you
must make a second cut with the 60" cutter tomove it down, then one more cut with the 45"
cutter to restore seat width.
. lf it is too low (closer to the valve edge), you
must make a second cut with the 30. cutter tomove it up, then one more cut with the 45. cutter
to restore seat width.
NOTE: The final cut should alwavs be made withthe 45" cutter,
Insert the intake and exhaust valves in the head,
and measure valve stem installed heioht.
Intake Vslve Siem Instslted Height:
Standard {Newl: it0.765 - 41.235 mm
11.6049 - 1.6234 inl
Sarvico Limit: itl.il85 mm (1.6333 in)
Exhaust Valve Stem Installed H6ight:
Standard {New}: 42.755 - €.235 mm
11 .61137 - 1 .7022 inl/(|.,185 mm (1.7120 in)
VALVE STEMINSTALLED HEIGHT
8. lf valve stem installed height is over the servicelimit. replace the valve and recheck. lf it is still overthe service limit. replace the cylinder head; thevalve seat in the head is too deeo.
Servico Limit:
f-]
6-28
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Valves, Valve Springs and Valve Seals
lnstallation
Coat the valve stems with oil. Insert the valves into
the valve guides.
Check that the valves move up and down smoothly.
Install the spring seats on the cylinder head.
Install the valve seals using the special tool.
NOTE: Exhaust and intake valve seals are not inter-
1.
changeable.
WHITESPRING
BLACKSPRING
INTAKE VALVE SEALEXHAUST VALVE SEAL
VALVE GUIDESEAL INSTALLER
lCommercially available)KO3372 or equival€ntot07GAD - PH70100
VALVE SPRING COMPRESSOR
lComm6rcially available)KD No. 383, with *35 JAw or
7.
Install the valve spring and valve retainer. Place the
end of the valve spring with closely wound coils
toward the cylinder head,
Install the valve spring compressor. Compress the
spring, and install the valve keepers.
VALVE SPRIT{G OOMPfi ESSORATTACHMENT0775' - PJ1010A
Lightly tap the end of each valve stem two or three
times with a plastic mallet to ensure proper seating
of the valve and valve keepers, Tap the valve stem
only along its axis so you do not bend the stem.
PLASTE
6-29
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Cylinder Head
Installation
Installthe cylinder head in the reverse order of removal:
1. Clean the cylinder head and block surfaces.
2. Clean the oil control orifice. Install the cylinder headgasket, dowel pins and the oil control orifice on thecylinder block. Always use a new cylinder head gas-ket.
CYLII{DER HEADGASKETR€place.
DOWEL PIN
O.RINGRoplace.
DOWELPIN
OIL CONTBOLORIFICEClean.
Apply clean engine oil to the bolt threads and underthe bolt heads.
4. Tighten the cylinder head bolts in two steps. In thefirst step tighten all bolts, in sequence, to about 29
N.m {3.0 kgf.m,22 lbf.ft); in the finat step, tighten inthe same sequence to 85 N.m (8.7 kgf.m,63 lbf.ft).
Use a beam-type torque wrench. When using a pre-
set-type torque wrench, be sure to tighten slowly
and do not overtighten.
lf a bolt makes any noise while you are torquing it,loosen the bolt, and retighten it from the 1st step.
CYLINDER HEAD BOLTS TOROUE SEOUENCE:
Tighten the intake manifold mounting bolts (see
page 6-21).
Install the exhaust manifold bracket. and tighten thenew self-locking nuts (see page 6-20).
6-30
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