ACURA NSX 1997 Service Repair Manual

Engine Oil

Inspection

1. Check engine oil with the engine off and the car

parked on level ground.

2. Make certain that the oil level indicated on the

dipstick is between the upper and lower marks.

3. If the level has dropped close to the lower mark,

add oil until it reaches the upper mark.

CAUTION: Insert the dipstick carefully to avoid

bending it.ProCarManuals.com

Replacement

CAUTION: Remove the drain plug carefully while the en-

gine is hot, the hot oil may cause scalding.

1. Warm up the engine.

2. Drain the engine oil.

3. Reinstall the drain plug with a new washer, and refill

with the recommended oil.

NOTE: Under normal conditions, the oil filter should be

replaced at every other oil change. Under severe condi-

tions, the oil filter should be replaced at each oil change.ProCarManuals.com

The number s i n th e middl e o f th e AP I Servic e labe l tel l
yo u th e oil' s SA E viscosit y o r weight . Selec t th e oi l fo r
you r vehicl e accordin g t o thi s chart :
A n oi l wit h a viscosit y o f 10 W-3 0 i s preferre d fo r
improve d fue l econom y an d year-roun d protection in th e
vehicle .
Yo u ma y us e a 5 W-3 0 oi l i f th e climat e i n you r are a i s
limite d t o th e temperatur e rang e show n o n th e chart .
4 . Fil l th e engin e wit h oi l u p t o th e specifie d level , ru n
th e engin e fo r mor e tha n thre e minutes , the n chec k
for oi l leakag e an d oi l level .
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Oil Filte r
Replacemen t
CAUTION: Loose n th e oi l filte r carefull y whil e th e
engin e is hot , the hot oi l ma y cause scalding .
1 . Remov e th e oi l filte r wit h th e specia l too l a s shown .
OIL FILTE R WRENC H07912-611000 1Torque: On e tur n(22 N- m (2. 2 kgf-m , 1 6 Ibf-ft) )
2. Inspec t th e thread s an d rubbe r sea l o n th e ne w filter .
Wip e of f th e sea t o n oi l filte r base , the n appl y a ligh t
coa t o f oi l t o th e rubber seal an d instal l th e filter .
3 . Afte r th e rubbe r sea l i s seate d agains t th e base ,
tighte n th e oi l filte r b y turnin g i t approximatel y on e
turn .
Torque : On e tur n (2 2 N- m (2. 2 kgf-m , 1 6 Ibf-ft) )
4 . Star t th e engine , an d chec k th e filte r fo r oi l leakage .
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Oil Pressur e
Testing
If th e oi l pressur e warnin g ligh t stay s o n wit h th e engin e
running , chec k th e engin e oi l level . I f th e oi l leve l i s
correct :
1 . Remov e th e engine oil pressur e switch , an d instal l
a n oi l pressur e gauge .
2 . Star t th e engine . Shu t i t of f immediatel y i f th e
gaug e register s n o oi l pressure . Repai r th e proble m
before continuing .
3. Allo w th e engin e t o reac h operatin g temperatur e
(fa n come s o n a t leas t twice) . Th e pressur e shoul d
be:
Engin e Oi l Pressure :
A t Idle : 7 0 kP a (0. 7 kgf/cm2,1 0 psi )
minimu m
A t 3,00 0 rpm : 34 0 kP a (3. 5 kgf/cm
2, 5 0 psi )
minimu m
• I f oi l pressur e i s withi n specifications , replac e th e
oi l pressur e sende r an d recheck .
• I f oi l pressur e i s NO T withi n specifications , inspec t
th e oi l pum p (se e pag e 8-8 ).
ENGIN E OI L PRESSUR ESWITCHMOUNTIN G HOL E
OIL PRESSUR E GAUG EADAPTO R(1/8"-28, BSPT )
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Oil Pum p
Overhau l
NOTE:
• Us e ne w O-ring s whe n reassembling .
• Appl y oi l t o O-ring s befor e installation .
6 x 1. 0 m m6 N- m (0. 6 kgf-m , 4 Ibf-ft ) PUM
P COVE R
Inspection , pag e 8-8 , 8-9PUM P HOUSIN GInspection , pag e 8-8 , 8-9
OI L SEA LInstallation , pag e 8- 9Replace .
OUTE R ROTO R
Inspection , pag e 8-8 , 8-9
INNE R ROTO RInspection , pag e 8-8 , 8-9
SEALIN G BOL T 1 8 m m49 N- m (5. 0 kgf-m , 3 6 Ibf-ft ) RELIE
F VALV E
Valve mus t slid e freel yin housin g bore .If valv e i s scored ,replace it .
O-RIN G
Replace .
SEALIN G BOL T 2 0 m m
3 9 N- m (4. 0 kgf-m , 2 9 Ibf-ft )
WASHE
R
Replace .
VALV E SPRIN G
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Oil Pum p
Removal/lnspection/lnstallatio n
1. Drai n th e engine oil.
2 . Remov e th e timin g bel t (se e pag e 6-15 ).
3 . Remov e th e dipstic k an d th e pipe .
4. Remov e th e oi l filte r assembly .
5. Remov e th e fron t exhaus t manifol d (M/ T se e pag e
6-24).
6 . Remov e th e oi l pan .
7 . Remov e th e oi l screen .
8 . Remov e th e baffl e plate .
9 . Remov e th e oi l pas s pip e an d th e joint .
10. Remov e th e mountin g bolt s an d th e oi l pum p
assembly . 11
. Remov e th e nin e screw s fro m th e pum p housing ,
the n separat e th e housin g an d cover .
12 . Chec k th e inner-to-oute r roto r radia l clearance .
Inner-to-Oute r Roto r Radia l Clearanc e
Standard (New) : 0.0 5-0.2 1 m m
(0.00 2-0.00 8 in )
Servic e Limit : 0.2 3 m m (0.00 9 in )
Replace .OIL PUM P
O-RING S
Replace .
OI L SCREE N
BAFFLE PLAT E
OI L PAS S PIP E
AND JOIN T
OUTE R ROTO R
13. Chec k th e housing-to-roto r axia l clearance .
Housing-to-Roto r Axia l Clearanc e
Standar d (New) : 0.0 2-0.0 7 m m
(0.00 1-0.00 3 in )
Servic e Limit : 0.1 2 m m (0.00 5 in )
OUTE R ROTO R
PUMP HOUSIN G
INNER ROTO R
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14. Chec k th e housing-to-oute r roto r radia l clearance .
Housing-to-Roto r Radia l Clearanc e
Standar d (New) : 0.1 1 - 0.2 0 m m
(0.00 4 - 0.00 8 in )
Servic e Limit : 0.2 1 m m (0.00 8 in )
OUTE R ROTO RPUMP HOUSIN G
15. Inspec t bot h rotor s an d th e pum p housin g fo r scor -
in g o r othe r damage . Replac e th e oi l pum p assembl y
i f necessary .
16 . Remov e th e ol d oi l sea l fro m th e oi l pump .
17 . Gentl y ta p i n th e ne w oi l sea l unti l th e specia l too l
bottom s o n th e pump .
OIL SEA L DRIVE R07GAD-PH7020 1
OIL PUM P
18. Reassembl e th e oi l pump . Appl y liqui d thread-loc k
t o th e pum p housin g screws .
19 . Chec k tha t th e oi l pum p turn s freely .
20 . Appl y a ligh t coa t o f oi l t o th e sea l lip .
21 . Instal l th e tw o dowe l pin s an d ne w O-rin g o n th e
cylinde r block .
22 . Appl y liqui d gaske t t o th e cylinde r bloc k matin g sur -
fac e o f th e oi l pump .
NOTE:
• Us e liqui d gasket , Par t No . 0871 8-000 1 o r 0871 8
- 0003 .
• Chec k tha t th e matin g surface s ar e clea n an d dr y
befor e applyin g liqui d gasket .
• Appl y liqui d gaske t evenly , i n a narro w bea d cen -
tere d o n th e matin g surface .
• T o preven t leakag e o f oil , appl y liqui d gaske t t o
th e inne r thread s o f th e bol t holes .
PUMP HOUSIN GApply liqui dgaske t alon g th ebroke n line .
• D o no t instal l th e part s i f fiv e minute s o r mor e
hav e elapse d sinc e applyin g liqui d gasket .
Instea d reappl y liqui d gaske t afte r removin g ol d
residue .
• Afte r assembly , wai t a t leas t 2 0 minute s befor e
filling th e engin e wit h oil .
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Oil Pum p
Removal/lnspection/lnstallatio n (cont'd )
23. Instal l th e oi l pum p o n th e cylinde r block .
24 . Instal l th e oi l pas s pip e an d joint .
25. Instal l th e baffl e plate .
26. Instal l th e oi l screen .
SPECIA L BOLT S8 x 1.2 5 mm22 N- m (2. 2 kgf-m ,
1 6 Ibf-ft )
Replace .
SPECIAL BOLT S6 x 1. 0 m m12 N- m (1. 2 kgf-m , 8. 7 Ibf-ft )
Replace .
DOWEL PIN SOIL PAS SPIPE AN D JOIN T
OI L PUM P
Appl y liqui d gaske t t o
cylinde r bloc k matin g
surface .
6 x 1. 0 m m12 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft )
OILSCREE N BAFFL
E
PLAT E6 x 1. 0 m m12 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft )
27. Appl y liqui d gaske t t o th e oi l pum p an d lef t sid e
cove r matin g area s a s show n below .
Apply liqui d gaske tto thes e points .
OIL PUM P
Apply liqui d gaske t
t o thes e points .
28. Instal l th e oi l pa n gaske t an d oi l pan .
NOTE : Us e a ne w oi l pa n gasket .
CYLINDE R
BLOC K
GASKE T
Replace .
OIL PA N
LEF T
SID E
COVE R
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29. Tighten bolts and nuts finger tight at six points as

shown below.

30. Starting with nut torque all bolts and nuts, in a

clockwise pattern in three steps.

NOTE: Excessive tightening can cause distortion of

oil pan gasket and oil leakage.

Torque: 14 N-m (1.4 kgf-m, 10 Ibf-ft)ProCarManuals.com