Head install HONDA CR-V 1999 RD1-RD3 / 1.G User Guide

Gylinder Head
lllustrated Index
To avoid damage, wait until the engine coolant temperature drops below 100'F (38'C) before removing the cylinder head.
6x1.0mm9.8 N.m (1.0 kgI.m, 7.2 lbf.ft)WASHERReplace when damagedor deteriorated,CYLINDER HEADCOVEBReter to page 6 32 wheninstalling cylinder head cover.
HEAO COVER GASKETBeplace when leaking,damaged or deteriorated.Apply liquid gasket atthe eight corners of the
RUBEER SEALReplace ifor deteriorated,
8 x 1.25 mm24 N.m (2.4
17 tbtft)
See section 4.
CYLINDEBHEAD PLUGReplace-
---..-@0+---.."...-
s<-- KEY
6x1.0mm9.8 N.m (1.0 kgf.m.7.2 tbf.foApply engine oil to thethreads.
CAMSHAFTHOLDER
DOWELPIN
OIL SEALReplace.
CAMSHAFTPULLEY
8 x 1.25 mm37 N.m {3.8 kgf.m,27 tbtft)
OIL SEALReplace.
6x1.0mm9.8 N.m (1.0 kgl.m, 7.2lbtftl
6-14
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-?E
handling a metal gasket. take care not to fold it or damage the contact surface.
Prior to reassembling, clean all the parts in solvent, dry them and apply lubricant to any contact parts.
CYLINDER HEAD BOLT11 x 1.5 mm85 N.m {8.7 kgf.m,6:} lbf.ft)Tightening, page 6'30.Apply engine oilto the threads.VALVEKEEPERS
\
END PIVOT BOLT63 N.m 16.4 kgl m, 46 lbf.ft)
EXHAUSY VALVESEALReplace.
EXHAUST VALVEGUIDEInspection, page 6-25Replacem6nt, page 6-25Reaming, page 6-27
10 x 1.25 mm4,0 N.m {i1.5 kgf.m.33 rbf.ft)
GASKETReplace.
OIL CONTROLORIFICEClean.
EXHAUST VALVESPRING
SPRING BETAINER
INTAKE VALVESPRING
INTAKE VALVE SEALReplace.
VALVE SPRINGSEAT
INTAKE VALVEGUIDE
Removal, page 6-16Warpage, page 6 27Valve seat reconditioning,page 6 28Installation, page 6-30
EXHAUSTVALVE
INTAKE VALVERemoval, page 6-23Installation, page 6-29
CYLINDER HEAO
HEAD
O.RINGReplace.
8 x 1.25 mm24 N.m (2.4 kgf.m,17 tbf.ft)
DOWEL PIN
6-15
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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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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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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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7.Place the rocker arms on the pivots and the valve
stems. Put the rocker arms in their original posi-
lrons.
lnstall the camshafts, then install the oil seals with
the open side (spring) facing in. Make sure that the
keyways on the camshafts are facing up and the No.
1 piston is at TDC.
Clean and dry the cylinder head mating surfaces.
Apply liquid gasket (P/N 08718 - 0001 or 08718 -
0OO3) to the head mating surfaces of the No. 1 and
No. 6 camshaft holders on both the intake and
exhaust side.
L
No. I
EXHAUST
II{TAKE
Apply liquid gasket to th€ shaded areas.
't't,
'10. lnstall the camshaft holders.
NOTE:
o "1" or "E' marks are stamped on the camshaft
holders.
. The arrows marked on the camshaft holders
should point at the timing belt.
Tighten each bolt in two steps to ensure that the
rockers do not bind on the valves.
Wipe off the excess liquid gasket from the No. 1 and
No. 6 camshaft holders with a shop towel,
Specified torque:
9.8 N.m (1.0 kgf.m, 7.2 lbf.ft)
Apply engine oil to the bolt ihreads.
I?,ITAKE
EXHAUST
(cont'd)
6-31
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Cylinder Head
Installation (cont'dl
'13. Align the marks on the cylinder head plug to thecylinder head upper surface, then install the cylin
der head plug in the end of the cylinder head.
CYLINOER HEADPLUGReplace.
lnstallthe back cover.
To set the camshafts at TDC position for the No. lpiston, align the holes in the camshafts with theholes in the No. l camshaft holders and insert 5.0mm pin punches in the holes. Install the keys into
the camshaft grooves.
37 N m (3.8 *gl.m, 27 lbt.tr)
9.8 N.m (1.0 kgtm,7.2|hrftl
Push the camshaft pulleys onto the camshafts. thentighten the retaining bolts to the torque specified.
6-32
14.
KEYS
I x 1.25 mm
6x1.0mm
Install the timing belt (see page 6-1 1).
Adjust the valve clearance (see page 6-3).
Thoroughly clean the head cover gasket and thegroove.
lnstall the head cover gasket in the groove of thecylinder head cover. Seat the head cover gasket in
the recesses for the camshaft first, then work it into
the groove around the outside edges. Make sure thehead cover gasket is seated securely in the corners
of the recesses with no gap.
17.
'18.
19.
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21.
22.
Check that the mating surfaces are clean and dry.
Apply liquid gasket, part No. 08718 - 0001 or 08718- 0003, to the head cover gasket at the eight corners
of the recesses.
NOTE:
. Do not install the parts if five minutes or more
have elapsed since applying liquid gasket.
Instead, reapply liquid gasket after removing old
residue.
. After assembly. wait at least 30 minutes before
filling the engine with oil.
Apply liquid gasket tothe shaded areas.
Hold the head cover gasket in the groove by placing
your fingers on the camshaft holder contacting sur-
faces (top of the semicirclesl.
Once the cylinder head cover is on the cylinder
head, slide the cover slightly back and forth to seat
the head cover gasket.
Inspect the cover washers. Replace any washer that
is damaged or dete(iorated.
23.
24.
25. Tighten the nuts in tvvo or three steps. In the final
step, tighten all nuts, in sequence. to 9.8 N.m (1.0
kgf.m, 7.2 lbf.ft).
Check that all tubes, hoses and connectors are
installed correctly.
26.
6-33
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