ACURA NSX 1997 Service Repair Manual

10. Reliev e fue l pressur e (se e sectio n 11 ).
D o no t smok e whil e workin g o n th e
fue l system . Kee p ope n flam e awa y fro m wor k
area . Drai n fue l onl y int o a n approve d container .
11 . Remov e th e fue l fee d pip e an d fue l retur n hose .
12 . Remov e th e wir e harnes s cover , the n remov e th e
fue l pip e clamp .
14. Remov e th e expansio n tan k cap .
15 . Rais e th e hois t t o ful l height .
16 . Drai n th e engin e coolan t (se e pag e 10-5 ).
• Loose n th e drai n plu g fro m th e radiato r lowe r
tank.
• Remov e tw o drai n bolt s fro m th e wate r pipes .
Reinstal l th e drai n bolt s wit h ne w washers .
• Loose n th e fron t an d rea r engin e drai n bolt s t o
drai n engin e coolan t fro m th e cylinde r heads .
Connec t rubbe r hose s t o th e drai n bolts .
17 . Drai n th e transmissio n fluid . Reinstal l th e drai n plu g
wit h a ne w washer .
18 . Drai n th e engin e oil . Reinstal l th e drai n plu g wit h a
ne w washer .
19 . Lowe r th e hoist , the n remov e th e ai r cleane r hous -
in g (se e pag e 6-26 ).
20 . Disconnec t tw o hoses , the n remov e th e expansio n
tank.
13. Remov e th e brak e booste r vacuu m hos e an d evapo -
rativ e emissio n (EVAP ) contro l caniste r hose .
ProCarManuals.com

21. Disconnect the engine wire harness connectors.

22. Remove the battery cable from the main fuse box.
24. Disconnect the two connectors from the emission

control box, then remove the control box.

• Do not disconnect the vacuum hoses.
Removal (cont'd)
Engine Removal/Installation

23. Disconnect the throttle body 6P connector, and

remove the ground cable and starter cable.
25. Remove the radiator hoses and heater hose.ProCarManuals.com

26. Loose n th e idle r pulle y cente r nu t an d adjustin g nut ,
the n remov e th e ai r conditionin g (A/C ) compresso r
belt . 28
. Rais e th e hois t t o ful l height .
29 . Remov e th e slav e cylinde r (M/ T se e sectio n 12 ).
• D o no t disconnec t th e clutc h hose .
30. Remov e th e lowe r cover , the n remov e th e shif t
cabl e an d selec t cabl e (M/ T se e sectio n 13 ).
31 . Remov e th e cabl e cover , the n remov e th e shif t
cabl e (A/T) .
NOTE :
• Tak e car e no t t o ben d th e cabl e whe n removin g
it . Alway s replac e a kinke d cabl e wit h a ne w one .
• Adjus t th e cabl e whe n installing .
32 . Remov e th e engin e unde r guar d an d th e cente r ro d
assembly .
27 . Mov e th e trun k carpet , an d disconnec t th e righ t rea r
whee l senso r connector . Pus h th e wir e an d connec -
to r throug h th e bod y hol e int o th e engin e compart -
ment.
ProCarManuals.com

Engine Removal/Installatio n
Removal (cont'd )
33. Remov e th e lef t an d righ t parkin g brak e cable s (se e
sectio n 19 ).
34 . Remov e th e rea r bea m ro d assembl y an d parkin g
brak e cabl e clamps . 36
. Remov e th e A/ C compresso r (se e sectio n 22 ), the n
suspen d i t fro m th e body .
NOTE :
• D o no t remov e th e compresso r hoses .
• D o no t le t th e compresso r han g b y it s hoses .
37 . Reinstal l th e fron t bea m an d fron t engin e mount .
38 . Remov e th e rea r brak e hoses , the n plu g th e brak e
pipe s wit h rubbe r cap s (se e sectio n 19 ).
39 . Disconnec t th e lef t rea r whee l senso r connector ,
the n remov e th e whee l senso r wir e clamp s an d sta -
bilize r link .
35
. Remov e th e fron t engin e mount , the n remov e th e
fron t beam .
ProCarManuals.com

40. Remov e th e righ t whee l senso r wir e clamp s an d
stabilize r link . 43
. Remov e th e muffle r (M/T) .
44 . Positio n th e specia l too l unde r th e car . Lower the ca r
jus t abov e th e fixture . Wit h th e hel p o f a n assistant ,
attac h th e fixtur e t o th e subfram e wit h tw o 1 2 m m
nut s an d tw o 1 0 m m bolts .
41
. Disconnec t th e fron t secondar y heate d oxyge n senso r
connector , the n remov e th e fron t exhaus t pip e A ,
fron t thre e wa y catalyti c converte r (TWC) and fron t
join t pip e assembl y (A/T) .
42 . Separat e th e rea r join t pip e fro m th e muffle r (A/T) .
45. Adjus t th e pad s o n th e fixtur e t o suppor t th e oi l pa n
an d transmissio n housing .
46 . Lowe r th e ca r s o th e fixtur e i s restin g o n it s caster s
(o r appropriat e platform) .
ENGINE REMOVAL /
INSTALLATIO N
FIXTUR E
07MA K - PR7020 A
ProCarManuals.com

Removal (cont'd)
Engine Removal/Installation

47. Remove the two bolts from the side engine mount

near the alternator. Pivot the mounting bracket into

the housing of the body.
49. Remove the twelve subframe-to-body mounting

bolts.

50. Raise the car a few inches.

51. Check that all wires and hoses are disconnected

from the engine assembly.

52. Raise the car completely off the engine/suspension

assembly. Roll the assembly from under the car.

48. Remove the transmission mounting bolt.ProCarManuals.com

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 .
ProCarManuals.com

Installation
Engine Removal/Installatio n
Additional Torqu e Valu e Specifications :
NOTE : Fo r manifol d replacement , refe r t o sectio n 9 .
ProCarManuals.com

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 .
ProCarManuals.com

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 .
ProCarManuals.com