454c65b538b90c2444c9056366509c8fe3f2f2cbd12c6b8fa04952626651ea22

nsxd06023a.pdf

13. Remove the breather hose, and the air cleaner case
(page 5-22).
(cont’d)
WATER HOSES
Do not disconnect.
EXPANSION TANK
12. Remove the expansion tank.
NOTE: Do not disconnect water hoses.
6x 1.0 mm
10N.m (1.0kg-m, 7 Ib-ft)
IGNITION COIL
CONNECTOR
6 x 1.0 mm
12N.m (1.2kg-m,
9 Ib-ft)
6×1.0 mm
12 N.m (1.2 kg-m. IGNITION COIL
CAUTION: Inspect the water pump when replacing the
timing belt (page 10-11).
O-RING
Replace.
8* 1.25 mm
8x 1.25 mm
22N.m (2.2 kg-m,
16 Ib-ft)
5. Lower the car.
6. Remove the strut bar (page 5-19).
7. Remove the intake manifold plate.
8. Remove the top cover (page 5-21).
9. Remove the ignition coil covers.
10. Remove the injector cover and the wire harness
covers.
11. Remove the ignition coils and the connecters.
22N.m (2.2 kg-m,
16 Ib-ft)
Replace.
Removal
9 Ib-ft)
HARNESS
COVERS
COVER
6x 1.0 mm
10N.m (1.0 kg-m,
7 Ib-ft)
FR
There are front and rear ignition coils and covers.
They can be identified by the mark FF (front) or
RR (rear) printed on them.
When installing front and rear ignition coil covers,
attach a rubber seal to the intake side.
NOTE:
Before removing the timing belt, mark direction of ro-
tation if it is to be reused.
NOTE:
1. Disconnect the negative terminal from the battery.
2. Raise the car.
3. Remove the right rear wheel/tire.
4. Remove the engine oil cooler base assembly.
Do not disconnect the hoses.

45N.m (4.5 kg-m. 33 Ib-ft)
14. Remove the connector, the terminal and the
alternator.
1 5. Remove the bolt from the side engine mount, then
push the side mounting bracket into the housing of
the body (page 5-27).
16. Remove the transmission mount.
17. Remove the cylinder head covers.
18. Turn the crankshaft so that the No. 1 piston is at
top dead center (page 6-25, 26).
19. Install a brace under the engine, then tilt the engine
approximately 5° using a jack.
Timing Belt
Removal (cont’d)
BELT COVER
ALTERNATOR
20. Remove the alternator bracket stiffener.
ALTERNATOR BRACKET
STIFFENER
21. Remove the air conditioning (A/C) compressor ad-
justing pulley and belt.
22. Remove the dipstick pipe mounting bolt, then re-
move the front and rear timing belt middle covers.
23. Remove the crankshaft pulley, then remove the tim-
ing belt lower cover.
24. Loosen the timing belt adjusting bolt 180° and
release the belt tension.
NOTE: Push the tensioner to release tension from
the belt, then retighten the adjusting bolt.
ADJUSTING BOLT
Do not remove. When
adjusting, loosen
it 180°.
25. Remove the timing belt from the pulleys.
CAUTION: Do not crimp or bend the timing belt more
than 90° or less than 25 mm (1 in.) in diameter.
DIAMETER
1.0 x 1.25 mm
45N.m (4.5 kg-m,
33 Ib-ft) 6 x 1.0 mm
12N.m (1.2 kg-m, 9 Ib-ft)
DIPSTICK PIPE
8×1.25 mm
22N.m
(2.2 kg-m,
16 Ib-ft)
9 Ib-ft)
6 x 1.0 mm
12N.m (1.2 kg-m.
6 Ib-ft29
ADJUSTING BOLT
8×1.25 mm
8N.m (0.8 kg-m,
1.0 x 1.25 mm
8×1.25 mm
12N.m (1.2 kg-m,
9 Ib-ft)

Attachments

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nsxd06043a.pdf

Valve Guides
Valve Movement
Measure the guide-to-stem clearance with a dial indica-
tor while rocking the stem in the direction of normal thrust
(wobble method).
Intake Vaive Stem-to-Guide Clearance:
Standard (New): 0.05—0.11 mm
(0.002-0.004 in)
Service Limit: 0.16 mm (0.006 in)
Exhaust Valve Stem-to-Guide Clearance:
Standard (New): 0.10—0.16 mm
(0.004-0.006 in)
Service Limit: 0.22 mm (0.009 in)
Valve extended 10 mm out from seat.
If measurement exceeds the service limit, recheck
using a new valve.
If measurement is now within the service limit,
reassemble using a new valve.
If measurement still exceeds limit, recheck using
alternate method below, then replace valve and
guide, if necessary.
NOTE: An alternate method of checking guide to
stem clearance is to subtract the O.D. of the valve
stem, measured with a micrometer, from the I.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.
Intake Valve Stem-to-Guide Clearance:
Standard (New): 0.025 — 0.055 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)

Attachments

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nsxb06041a.pdf

Reaming
NOTE: For new valve guides only.
1. Coat both reamer and valve guide with cutting oil.
2. Rotate the reamer clockwise the full length of the
valve guide bore.
3. Continue to rotate the reamer clockwise while
removing it from the bore.
4. Thoroughly wash the guide in detergent and water
to remove any cutting residue.
5. Check clearance with a valve (see page 6-39).
— Verify that the valve slides in the intake and exhaust
valve guides without exerting pressure.
VALVE GUIDE
REAMER, 5.5 mm
07HAH-PJ7010B

Attachments

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nsxb06013a.pdf

Timing Belt
Illustrated Index
NOTE:
Refer to page 6-18 (’91-’93) or (’94-’96) for positioning crankshaft and pulley before installing the belt.
if it is to be reused, mark the direction of rotation on the belt before removing.
Do not use the middle cover and lower cover for storing removed items.
Clean the middle cover and lower cover before installing.
Replace the camshaft seals and crankshaft seals if there is oil leakage.
Refer to page 6-12 (’91-’93) or (’94-’96) before installing timing belt.
CYLINDER HEAD COVER
Refer to page 6-47 (’91-’93) or (’94-’96)
when installing
RUBBER SEALS
Replace when damaged
or deteriorated.
6 x 1.0 mm
12N·m (1.2 kg-m,
9 Ib-ft)
6 x 1.0 mm
12N·m (1.2 kg-m.
9 Ib-ft)
MIDDLE
COVER
RUBBER SEALS
Replace when damaged
or deteriorated.
LOWER COVER
6 x 1.0 mm
12 N·m (1.2 kg-m,
9 Ib-ft)
CRANKSHAFT
PULLEY
Replacement,
page 6-12 (’91-’93) or (’94-’96)
PULLEY BOLT
16x 1.5 mm
250 N·m (25.0 kg-m.
181 Ib-ft)
Replacement,
page 6-12 (’91-’93) or (’94-’96)
Do not use an impact
wrench when installing.
HEAD COVER GASKET
Replace when leaking,
damaged or deteriorated.
Apply liquid gasket at
the eight corners of the
ecesses
CAP NUT
6 x 1.0 mm
10N m (1.0 kg-m,
7 Ib-ft)
WASHERS
Replace when damaged
or deteriorated.
RUBBER SEALS
Replace when damaged
or deteriorated.
ADJUSTING BOLT
10 x 1.25 mm
43N.m (4.3 kg-m.31 Ib-ft)
For adjustment only,
do not remove.
COLLARS
TIMING BELT
Inspection, page 6-14 (’91-’93) or (’94-’96)
Adjustment, page 6-14 (’91-’93) or (’94-’96)
Install with concave
surface facing out.
6 x 1.0 mm
12N·m (1.2 kg-m, 9 Ib-ft)

Attachments

191313ccd23f6d5f256215a1b70fba3288d7f21124af8e8b242f26b42fc29c13

nsxb06036a.pdf

Valves, Valve Springs and Valve Seals
Replacement
NOTE: Identify valves and valve springs as they are re-
moved so that each item can be reinstalled in its original
position.
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.
PLASTIC MALLET
SOCKET
2. Install the spring compressor. Compress the spring
and remove valve keeper.
VALVE SPRING
COMPRESSOR
ATTACHMENT
EXTENSION
07MAF-PR9010A
VALVE SPRING
COMPRESSOR
ATTACHMENT
07757 – PJ1010A
VALVE SPRING COMPRESSOR
(Commercially available)
Snap-on CF711 or equivalent
3. Install the special tool as shown.
VALVE SEAL VALVE GUIDE SEAL REMOVER(Commercially available)
LISLE P/N 57900 or KD3350
SEAL
PULLER
4. Remove the valve guide seal.
VALVE GUIDE SEAL REMOVER
(Commercially available)
LISLE P/N 57900 or KD3350

Mam Menu
Table of Contents
(If: ㄱ
А
L
Intake Valve Dimensions
A Standard (New):
B Standard (New):
С Standard (New):
C Service Limit:
D Standard (New):
D Service Limit:
34.9-35.1 mm
(1374—1382 in)
111.05—111.40 mm
(4.372—4.386 in)
5.475-5.485 mm
(0.2156-0.2159in)
5.445 mm (0.2144 in)
‘LOS-1.35 mm
(0.041 _0.053 in)
0.85 mm (0.033 in)
Exhaust Valve Dimensions
A Standard (New):
B Standard (New):
C Standard (New):
C Service Limit:
D Standard (New):
D Service Limit:
29.9-30.1 mm
(1.177-1.185 in)
109.60-109.90 mm
(4315—4327 in)
5.45—5.46 mm
(02146—02150 in)
5.42 mm (0.2134 in)
1.65-1.95 mm
(0.065—0.077 in)
1.45 mm (0.057 in)
6-37

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nsxb06012a.pdf

Crankshaft Pulley and Pulley Bolt
Replacement
When installing and tightening the pulley, follow the procedure below.
Clean, remove any oil and lubricate points shown below.
Clean
Remove any oil
Lubricate
CRANKSHAFT
PULLEY
WASHER
PULLEY BOLT
TIMING BELT
DRIVE PULLEY CRANKSHAFT
TIMING BELT
GUIDE PLATE
TIMING BELT
GUIDE PLATE
Crankshaft pulley bolt size and torque value:
16 x 1.5 mm
250 N-m (25.0 kg-m, 181 Ib-ft)
NOTE:
• Do not use an impact wrench when installing.
• Make sure the handle thumb screw aligns with the hole in the attachment.
HOLDER HANDLE
07JAB – 001020A M/T: HOLDER ATTACHMENT, 45 mm
07NAB – 001030A
A/T: HOLDER ATTACHMENT, 50 mm
07NAB – 001040A
TORQUE WRENCH
SOCKET, 19 mm
07JAA – 001020A
or (Commercially available)

Attachments

eda4ab425ba292fccdee2818dcd74eaf8c3b06508bb9acf57783a6d4850a1d20

nsxd06027a.pdf

Crankshaft Position (CKP)/Cylinder Position
(CYP) Sensor
NOTE: Turn the crankshaft so that the No. 1 piston is
at top dead center (page 6-25, 26).
1. Remove the timing belt (page 6-23, 24).
2. Remove the front intake and exhaust camshaft
pulleys.
3. Remove the front timing belt cover plate.
4. Remove the CKP/CYP sensor from the front
cylinder head.
5. Install the CKP/CYP sensor in the reverse order of
removal;
Replacement
FRONT INTAKE
CAMSHAFT PULLEY
10 x 1.25 mm
70N.m (7.0 kg-m,
51 Ib-ft)
6x 1.0 mm
12N.m (1.2 kg-m.
9 Ib-ft)
6 x 1.0 mm
12N.m (1.2 kg-m,
9 Ib-ft)
TIMING BELT
LOWER COVER
TIMING BELT
MIDDLE COVER
FRONT TIMING
BELT COVER PLATE
10 x 1.25 mm
70N.m (7.0 kg-m,
51 Ib-ft)
FRONT EXHAUST
CAMSHAFT PULLEY
TIMING
BELT
FRONT
CAMSHAFTS
CKP/CYP
SENSOR
Refer to page 6-25 and 26, when installing the
timing belt.

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nsxd06036a.pdf

Rocker Arms and Lost Motion Assemblies
Inspection
NOTE: When reassembling the primary rocker arm, care-
fully apply air pressure to the oil passage of the rocker
arm.
PRIMARY ROCKER ARM
MID ROCKER ARM
SECONDARY
ROCKER ARM
PISTONS
1. Inspect the rocker arm pistons. Push them
manually.
PRIMARY
MID
SECONDARY
Apply oil to the pistons when reassembling.
Bundle the rocker arms with rubber bands to
keep them together as sets.
LOST MOTION ASSEMBLY
2. Remove the lost motion assembly from the cylinder
head and inspect it. Pushing it gently with the finger
will cause it to sink slightly. Increasing the force on
it will cause it to sink deeper.
Push
NOTE:
Check piston movement
If they do not move smoothly, replace the rocker
arm assembly.
If the lost motion assembly does not move
smoothly, replace it.

Attachments

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nsxb06018a.pdf

Timing Belt
Installation
Install the timing belt in the reverse order of removal;
Only key points are described here.
NOTE: Clean the middle and lower covers before instal-
lation.
1. Set the timing belt drive pulley so that the No. 1 pis-
ton is at top dead center (TDC). Align the mark on
the teeth side of the timing belt drive pulley to the
pointer on the oil pump.
POINTER
MARK
KEY
TIMING BELT
DRIVE PULLEY
Clean.
2. Set the front camshaft pulleys so that the No. 1 pis-
ton is at TDC. Align the TDC marks on the front
exhaust camshaft pulley and front intake camshaft
pulley to the pointer on the back cover.
Pointer on the
back cover.
FRONT INTAKE
CAMSHAFT PULLEY
FRONT EXHAUST
CAMSHAFT PULLEY
TDC MARKS
3. Set the rear camshaft pulleys so that the No. 1 pis-
ton is at TDC. Align the TDC mark on the rear intake
camshaft pulley to the pointer on the back cover.
Align the rear exhaust camshaft pulley one half
tooth clockwise past TDC.
REAR EXHAUST
CAMSHAFT PULLEY
Pointer on the
back cover.
REAR INTAKE
CAMSHAFT PULLEY
TDC MARKS
4. Install the timing belt tightly in the sequence shown.
Timing belt drive pulley (crankshaft)
Adjusting pulley Front exhaust camshaft pulley
Front intake camshaft pulley Water pump
pulley Rear intake camshaft pulley Rear
exhaust camshaft pulley.
NOTE: Make sure the timing belt drive pulley and
camshaft pulleys are at TDC.
5. Tension the timing belt between the pulleys in the
sequence A to E as shown below.

6. Adjust the timing belt (see page 6-14 (’91-’93) or (’94-’96))
7. Install the lower cover and middle covers.
8. Install the crankshaft pulley, then tighten the pulley
bolt (see page 6-12 (’91-’93) or (’94-’96))
9. Check the crankshaft pulley and the camshaft pul-
leys at TDC.
NOTE: To check the camshaft, try to insert 5.0 mm
pin punches as shown when the camshaft is at TDC.
TDC MARK
(White paint)
TDC MARK
FRONT: TDC MARKS
5.0 mm
PIN PUNCHES
BACK COVER
MIDDLE COVER
REAR: TDC MARK
5.0 mm
PIN PUNCHESTDC MARK
MIDDLE COVER TDC MARKS
10. If a camshaft is not positioned at TDC, remove the
timing belt and adjust the positioning following the
procedure on page 6-18 (’91-’93) or (’94-’96) then reinstall
the timing belt.
11. After installation, adjust the tension of each belt.
See section 23 for alternator belt tension adjust-
ment.
See section 22 for A/C compressor belt tension
adjustment.

Attachments

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nsxb06014a.pdf

Timing Belt
Inspection
1. Remove the ignition coil covers and harness clamps.
2. Disconnect the connectors, then remove the ignition
coils.
3. Remove the cylinder head covers,
4. Inspect the timing belt for cracks and coolant or oil
soaking.
NOTE:
Replace the belt if coolant or oil soaked.
Remove any oil or solvent that gets on the belt.
Inspect this area
for wear.
Rotate pulley and
Inspect belt.
Tension Adjustment
CAUTION:
Always adjust timing belt tension with the engine cold
Do not rotate the crankshaft when the adjusting bolt
is loose (the timing belt will skid over the teeth of
the rear intake caimshaft pulley).
Adjust the belt tension only when the belt has been
removed and reinstalled or replaced.
NOTE:
Tensioner is spring-loaded to apply proper tension to
the belt automatically after making the following ad-
justment.
Inspect the timing belt before adjusting the belt
tension.
Always rotate the crankshaft clockwise. Rotating it
counterclockwise may result in improper adjustment
of the belt tension or cause the belt to jump a tooth
on the camshaft pulleys.
Install the timing beIt with the No. 1 piston at TDC
(see pages 6-18 (’91-’93) or (’94-’96),19 (’91-’93)
or (’94-’96)
Remove the slack in the sequence of , and
by turning each camshaft pulley slightly.
Loosen the timing belt adjusting bolt 180° (the slack
at should be eliminated).
Then, tighten the timing belt adjusting bolt.
Verify that No. 1 piston is at TDC (see page 6-19).
Rotate the crankshaft clockwise nine teeth on the
camshaft pulley (The blue mark on the crankshaft pul-
ley should line up with the pointer on lower cover).
Loosen the timing belt adjusting bolt.
Retighten the adjusting bolt, torque to 43 N·m (4.3
kg-m, 31 Ib-fl).
Direction
of rotation
POINTER ON
LOWER COVER
ADJUSTING BOLT
43N·m (4.3 kg-m,
31 Ib-ft)
BLUE MARK
TDC MARK

Attachments