1997 ACURA NSX Service Repair Manual

NOTE: Perfor m step s 5 3 thr u 5 6 onl y i f th e engine
assembl y i s t o b e remove d fro m th e subframe .
53 . Remov e th e adjustin g bol t an d flang e bolt , the n
separat e th e lowe r contro l ar m fro m th e subfram e
(se e sectio n 18 ).
54 . Remov e th e flang e bolt , the n separat e th e to e contro l
ar m fro m th e subfram e (se e sectio n 18 ).
CAUTION : Mak e sur e tha t th e referenc e mark s o n
th e contro l ar m ar e aligned .
55 . Remov e th e hea t shiel d for m th e intermediat e shaf t
bearin g support , the n remov e th e driveshaft s (se e
sectio n 16 ).
NOTE :
• Coa t al l precisio n finishe d surface s wit h clea n
engin e oil .
• Ti e plasti c bag s ove r th e driveshaf t ends .
56 . Attac h a chai n hois t t o th e engine .
Remov e th e fron t an d rea r moun t mountin g bolts ,
the n separat e th e engine from th e suspensio n an d
th e bea m assembly .
CAUTION : D o no t hi t th e engin e oi l coole r o n th e
rea r righ t bea m bracket .
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Installation
Engine Removal/Installatio n
Additional Torqu e Valu e Specifications :
NOTE : Fo r manifol d replacement , refe r t o sectio n 9 .
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Engine Installation :
Instal l th e engin e in th e revers e orde r o f removal . Reinstal l
th e moun t bolts/nut s i n th e followin g sequence . Failur e to
follo w thes e procedure s ma y caus e excessiv e nois e an d
vibration , an d reduc e bushin g life .
1 . Instal l th e rea r mount , the n tighte n th e bolt s o n th e
transmissio n side .
NOTE : D o no t tighte n th e mountin g bolt . 3
. Instal l th e subframe , the n tighte n th e subframe-to -
bod y mountin g bolt s (se e sectio n 20 ).
NOTE : Alig n th e bol t hole s o f th e bea m bracket s
an d bod y wit h a tapere d punch .
2 . Instal l th e fron t mount , the n tighte n th e bolt s i n th e
numbere d sequenc e a s show n 4
. Instal l th e transmissio n mount , the n tighte n th e bolt s
o n th e transmissio n side .
NOTE : D o no t tighte n th e mountin g bolt .
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5. Instal l th e sid e engin e mount , the n tighte n th e bolt s
in th e numbere d sequenc e a s show n
Engine Removal/Installatio n
Installation (cont'd )
7. Tighte n th e rea r moun t mountin g bolt .
• Chec k tha t th e sprin g cli p o n th e en d o f eac h
driveshaf t click s int o place .
CAUTION : Us e ne w sprin g clips .
• Blee d ai r fro m th e coolin g syste m (se e pag e 10-5 ).
• Blee d ai r fro m th e brak e line s (se e sectio n 19 ).
• Chec k th e clutc h peda l fre e pla y (se e sectio n 12 ).
• Adjus t th e clutc h guid e assemblie s whe n disas -
semblin g clutc h (se e sectio n 12 ).
• Chec k tha t th e transmissio n shift s int o gea r
smoothly .
• Adjus t th e alternato r bel t (se e sectio n 23 ).
• Adjus t th e A/ C compresso r bel t (se e sectio n 22 ).
• Clea n batter y post s an d cabl e terminal s wit h
sandpaper , assemble , the n appl y greas e t o pre -
ven t corrosion .
• Inspec t fo r fue l leakag e (se e sectio n 11 ).
• Afte r assemblin g th e fue l lin e parts , tur n o n
th e ignitio n switc h (d o no t operat e th e starter )
s o tha t th e fue l pum p operate s fo r approxi -
matel y tw o second s an d th e fue l lin e pressu -
rizes . Repea t thi s operatio n tw o o r thre e time s
an d chec k fo r fue l leakag e a t an y poin t i n th e
fue l line .
• Chec k an d adjus t whee l alignmen t (se e sectio n 18 ).
• Refil l th e engin e wit h engin e oi l (se e pag e 8-4 ).
• Refil l th e transmissio n wit h oil/flui d (se e
section 1 3 o r section 14 ).
6 . Tighte n th e transmissio n moun t mountin g bolt .
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Special Tool s
07HA H - PJ7010 B
07JA A - 001020 A
07JA B - 001020 A
07MA A - PR7011 0
07MA A - PR7012 0
07MA F - PR9010 A
07MA J - PR7020 A
07NA B - 001030 A
07NA B - 001040 A
0774 2 - 001010 0
0775 7 - PJ1010 A Valv
e Guid e Reamer , 5. 5 m m
Socket , 1 9 m m
Holde r Handl e
Tappe t Adjuste r
Tappe t Locknu t Wrenc h
Valv e Sprin g Compresso r Attachmen t
Extensio n
VTE C Plu g
Holde r Attachment , 4 5 m m
Holde r Attachment , 5 0 m m
Valv e Guid e Driver , 5. 5 m m
Valv e Sprin g Compresso r Attachmen t
6-43
6-1 2
6-12
6-1 0
6-1 0
6-3 7
6-7 ,
6-8
6-1 2
6-1 2
6-42 , 6-43
6-37
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VTEC

VTEC Solenoid Valve Inspection

1. Disconnect the 2P connector from the VTEC sole-

noid valve.

2. Measure resistance between the BLU/YEL (front/rear)

terminals and body ground.

BLU/YEL

3. If the resistance is within specifications, remove the

VTEC solenoid valve from the cylinder head, and

check the VTEC solenoid valve filter for clogging.

• If there is clogging, replace the engine oil filter

and engine oil.

VTEC SOLENOID VALVE

VTEC SOLENOID VALVE

FILTER/O-RING

Replace.
4. If the filter is not clogged, push the VTEC solenoid

valve with your finger and check its movement.

• If VTEC solenoid valve is normal, check the engine

oil pressure.ProCarManuals.com

Rocker Arm s — Manua l Inspectio n
1. Remov e th e ignitio n coi l cover s (se e pag e 6-15 ).
2 . Remov e th e ignitio n coil s (se e pag e 6-15 ).
3 . Remov e th e cylinde r hea d covers .
NOTE : Refe r t o page s 6-49 , 6-5 0 whe n installin g th e
cylinde r hea d cover .
4 . Se t th e No . 1 pisto n a t to p dea d cente r (TDC ) (se e
pag e 6-19 ).
5 . Pus h th e mi d rocke r arm s o n th e No . 1 cylinde r man -
ually.
6. Chec k tha t th e mi d rocke r arm s mov e independentl y
o f th e primar y an d secondar y rocke r arms .
MID ROCKE RARMSECONDAR YROCKER AR M
PRIMAR YROCKER AR M
7. Chec k th e mi d rocke r arm s o f eac h cylinde r a t TDC .
• I f a mi d rocke r ar m doe s no t move , remov e th e
mid , primar y an d secondar y rocke r arm s a s a n
assembl y an d chec k tha t th e piston s i n th e mi d
an d primar y rocke r arm s mov e smoothly .
• Replac e th e rocke r arm s a s a n assembl y i f ther e
is an y abnormality .
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Rocker Arm s — Inspectio n Usin g
Specia l Tool s
CAUTION :
• Befor e usin g th e specia l tool , mak e sur e tha t th e ai r
pressur e gaug e o n th e ai r compresso r indicate s ove r
250 kP a (2. 5 kgf/cm2, 3 6 psi) .
• Inspec t th e valv e clearanc e befor e rocke r ar m inspec -
tion.
• Cove r th e timin g bel t wit h a sho p towe l t o preven t
getting oi l o n th e belt .
• Chec k th e mi d rocke r arm s o f eac h cylinde r a t TDC .
1. Plu g th e relie f hol e wit h th e specia l too l a s shown .
Front cylinde r head :
RELIE F HOL E
VTEC PLU G
07MA J - PR7020 A
VTE C INSPECTIO N HOL E
SEALIN G BOL T
Rear cylinde r head :
RELIE F HOL E VTE
C PLU G
07MA J - PR7020 A
VTE C INSPECTIO N HOL E
SEALIN G BOL T
(cont'd )
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