1997 HONDA CR-V head bolt

1.
2.
Inspection
Remove the cylinder head cover.
lnspect the timing belt for c.acks and oil or coolant
soaking. Replace the belt if it is oil or coolant
soaked. Remove any oil or solvent that gets on the
belt.
lnspect thisarea for wear.
After inspecting, retorque the crankshaft pulley bolt
to 177 N.m (18.0 kgnm, 130 lbf.ft).
Install the cylinder head cover (see page 6-32).
3.
Tension Adjustment
NOTE:
. Always adjust the timing belt tension with the engine
coto.
. Always rotate the crankshaft counterclockwise when
viewed from the pulley side. Rotating it clockwise
may result in improper adiustment of the belt ten-
sion.
'1. Remove the cylinder head cover
2. Set the No. 1 piston at TDC (see page.6-12).
3. Rotate the crankshaft five or six revolutions to set
the belt.
Set the No. 1 piston at TDC.
Loosen the adjusting bolt 1/2 turn (180') only.
4.
5.
ADJUSTING BOLT5,4 N.m (5.5 kgf.m,40 tbtftlFor adiustment only,
7.
8.
Rotate the crankshaft counterclockwise three teeth
on the camshaft pulley.
Tighten the adjusting bolt to the specified torque.
After adjusting, retorque the crankshaft pulley bolt to
177 N.m (18.0 kgf.m, 130 lbf.ft).
Installthe cylinder head cover (see page 6-32).9.
rotation,
6-9
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8. Remove the cylinder head cover.
NOTE: Refer to page 6-32 when installing the cylin-
der head cover.
Remove the crankshaft pulley (see page 6-7).
Remove the middle cover and lower cover. Do not
use these covers to store removed items.
9.
10.
11.
MTDDLE 6x1.0mm
COVER 9.8 N.m {1.0 kgt m,
LOWERCOVER
9.8 N.m (1.0 kgt.m, 7.2 lbf.ftl
Mark the direction of rotation on the timing belt.
Loosen the adjusting bolt 180'. Push the tensioner to
remove tension from the timing belt, then retighten
the adiusting bolt.
AINUSTING BOLT54 N.m (5,5 kgt m,.(} tbf.rrl
12.
13. Remove the timing belt.
Installation
Install the timing belt in the reverse order of removal;
Only key points are described here,
1. Set the timing belt drive pulley so that the No. 1 piston
is at top dead center (TDC). Align the groove on the
timing belt drive pulley to the pointer on the oil pump.
GROOVE
DRIVE PULLEYClean.
2. Set the camshaft pulleys so that the No. I piston is at
TDC. Align the TDC marks on the camshaft pulleys to
the pointers on the back cover.
POINTER
CAMSHAFTPULLEYClean.
POINTER
r-t
(cont'd)
6-11
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Timing Belt
Installation (cont'd)
3. Install the timing belt tightly in the sequence shown.
O Timing belt drive pulley (crankshaft) J @ Adjust-
ing pulley =r @ Water pump pulley r @ Exhaust
camshaft pulley --) @ Intake camshaft pulley.
NOTE: Make sure the timing belt drive pulley and
camshaft pulleys are at TDC.
4. Loosen and retighten the adjusting bolt to tension
the timing belt.
5. Clean. then install the lower cover and middle
cover.
Install the crankshaft pulley, then tighten the pulley
bolt (see page 6-7).
Rotate the crankshaft pulley about five or six turns
counterclockwise so that the timing belt positions
on the pulleys.
Adjust the timing belt tension {see page 6-9).
1.
6-12
9. Check that the crankshaft pulley and camshaft pulleys
are both at TDC.
POINTER ON
lf the camshaft pulleys are not positioned at TDC,
remove the timing belt. adjust the position following
the procedure on page 6-11. then reinstall the timing
belt.
Installthe cylinder head cover (see page 6-32).
After installation, adjust the tension on each belt.
. See section 4 for alternator belt tension adjust-
menr.
. See section 22 for NC compressor belt tension
adjustment.
. See section 17 for P/S pump belt tension adjust-
ment.
10.
11.
12.
POINTER
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CKF Sensor
Replacement
1.
|o|'ln PUUCY BMCKET SOLIl0 r 1.25 mm14 .m 14.5 kgl.m,3:' lbtftl
Remove the guard bar and splash shield (see page
5-7 t.
Loosen the lock bolt and mounting bolt, then
remove the P/S pump belt.
MOUNTING BOLT8 x 1.25 mm
PUMPBELT
Loosen the adjusting bolt and idler pulley bracket
bolt, then remove the Ay'C comDressor belt.
ADJUSTING BOLTLOCKNUT8 x 1.25 mm24 N.m {2.4 kgf.m, 17 lbf.ft)
24 N.m (2.{ kgf.m, 17 lbf.ttl
24 N.m 12.4 lgf.m, 17 lbl.ftl
4. Loosen the locknut and mounting nut, then remove
the alternator belt.
LOCKNUT8 x 1.25 mm24 N.m (2.4 kgl.m, 17 lbtftl
10 x 1 .25 mma4 N.m (4.5 kgt m, 33 lbtft)
E
6.
7.
aJ.
Remove the cylinder head cover.
Remove the crankshaft pulley (see page 6-7).
Remove the middle cover and the lower cover.
Disconnect the CKF sensor connector, then remove
the CKF sensor.
6x1.0mm11 N.m {1.r kgnm,8.0 lbfft)
9. Install the CKF sensor in reverse order of removal.
BELT
CKF SENSOR
6-13
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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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Gylinder Head
Removal
Engine removal is not required for this procedure.
l!@ Make sure iacks and safety stands are
placed properly, and hoist blackels ale attachgd to the
correct position on the engine.
NOTE:
o Use fender covers to avoid damaging painted sur-
faces.
o To avoid damage, unplug the wiring connectors care-
fully while holding the connector portion.
. To avoid damaging the cylinder head, wait until the
engine coolant temperature drops below 100"F (38'C)
before loosening the retaining bolts.
. Mark all wiring and hoses to avoid misconnection.
Also, be sure that they do not contact other wiring or
hoses, or interfere with other parts.
2.
4.
5.
1.Disconnect the negative terminal from the battery.
Drain the engine coolant (see page 10-5). Remove
the radiator cap to speed draining.
Remove the intake air duct and air cleaner housing(see page 5-2).
Remove the mounting bolt and lock bolt, then
remove the power steering (P/S) pump belt and
pump (see page 5-4).
Loosen the idler pulley bracket bolt and adjusting
bolt, then remove the air conditioning (A,/C) com,
pressor belt.
ADJUSTINGBOLT
ADJUSTING BOLTLOCKNUT8 x 1.25 mm24 N m {2.4 ksf.m, 17 lbttt}
IOLER PULLEY BBACKET BOLT10 x 1.25 mm44 N.m {4.5 kgtm, 33 lbf ft)
tt aAo-Io
6. Loosen the locknut and mounting nut, then remove
the alternator belt.
LOCKNUT8 x 1.25 mm24 N.m (2.4 kgf.m, 17 lbt.ftl
10 x 1.25 mm44 N.m (4.5 kgt.m. 33 lbf.ft)
7. Remove the P/S OUmo bracket.
l0 x 1.25 mm44 N.m (4.5 kgf.m,33 rbf.ft)
BELT
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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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