1997 ACURA NSX Service Repair Manual

Thickness an d Parallelis m
Inspectio n
1. Rais e bot h side s o f th e vehicle , an d suppor t i t o n
safet y stand s (se e pag e 1- 10 throug h 1-12 ).
Remov e th e rea r wheels .
2 . Mov e th e calipe r an d pad s ou t o f th e wa y a s
describe d o n th e precedin g page .
3 . Usin g a micrometer , measur e dis c thicknes s a t
eigh t points , approximatel y 45 ° apar t an d 1 0 m m
(0. 4 in ) i n fro m th e oute r edg e o f th e disc .
Brak e Dis c Thickness :
Standard : 23. 0 m m (0.9 1 in ) max .
Servic e Limit : 21. 0 m m (0.8 3 in )
Brak e Dis c Parallelism :
Th e differenc e betwee n an y thicknes s measure -
ment s shoul d no t b e mor e tha n 0.01 5 m m (0.000 6
in).
4. I f th e brak e dis c i s beyon d th e limit s parallelism ,
refinis h th e disc .
Max . Refinishin g Limit : 19. 0 m m (0.7 5 in )
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Rear Calipe r
Disassembl y
• Neve r us e a n ai r hos e o r dr y brus h t o clea n brak e
assemblies .
• Us e a n OSHA-approve d vacuu m cleane r t o avoi d
breathin g brak e dust .
CAUTION :
• D o no t spil l brak e flui d o n th e vehicle ; i t ma y damag e
th e paint ; i f brak e flui d doe s contac t th e paint , was h
it of f immediatel y wit h water .
• T o preven t spills , cove r th e hos e joint s wit h rag s o r
sho p towels .
• Clea n al l part s i n brak e flui d an d ai r dry ; blo w ou t al l
passage s wit h compresse d air .
1 . Remov e th e calipe r shiel d (se e pag e 19-18 ).
2 . Disconnec t th e parkin g cabl e (se e pag e 19-18 ).
3 . Remov e th e banj o bol t an d tw o sealin g washers .
4 . Remov e th e tw o calipe r mountin g bolt s an d calipe r
bod y fro m th e bracket .
5 . Remov e th e pa d sprin g fro m th e caliper .
6. Remov e th e pisto n an d pisto n boo t whil e rotatin g
the pisto n wit h a commercially-availabl e locknu t
wrench.
CAUTION : Avoi d damagin g th e pisto n an d pisto n
boot .
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Disassembly (cont'd )
Rear Calipe r
7. Remov e th e circlip , washer , adjustin g sprin g A , an d
th e adjustin g nu t fro m th e piston . 9
. Adjus t th e specia l too l a s shown .
BRAKE SPRIN GCOMPRESSO R
07HA E - SG0010 0
10. Instal l th e specia l too l betwee n th e calipe r bod y an d
sprin g guid e a s shown .
11 . Compres s th e adjustin g sprin g B by turnin g th e
shaf t o f th e specia l tool , the n remov e th e circli p
wit h sna p rin g pliers .
8
. Remov e th e pisto n seal .
CAUTION : Tak e car e no t t o damag e th e cylinde r
bore.
SNAP RIN GPLIER S07914-SA5000 0BRAKE SPRIN GCOMPRESSO R07HAE - SG0010 0
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12. Remove the adjusting bolt.

13. Remove the spring cover, adjusting spring B, spacer,

bearing A and cup from the adjusting bolt.
15. Remove the return spring.

16. Remove the parking lever and cam as an assembly

from the caliper body.

CAUTION: Do not loosen the parking nut with the

cam installed in the caliper body. If the lever and

shaft must be separated, hold the lever in a vise

and loosen the parking nut.

17. Remove the cam boot.

14. Remove the sleeve piston, and remove the pin from

the
cam.ProCarManuals.com

Reassembly
Rear Calipe r
CAUTION :
• Mak e sur e al l part s ar e clea n befor e reassembly .
• Us e onl y ne w replacemen t parts .
• Alway s us e Genuin e Hond a DO T 3 Brak e Fluid . Usin g
a non-Hond a brak e flui d ca n caus e corrosio n an d
decreas e th e lif e o f th e system .
• D o no t allo w dir t o r othe r foreig n matte r t o contami -
nat e th e brak e fluid .
• Avoi d spillin g brak e flui d o n painted , plasti c o r rub -
be r surface s a s i t ca n damag e th e finish . Was h
spille d brak e flui d of f immediatel y wit h clea n water .
1 . Pac k al l cavitie s o f th e needl e bearin g wit h a com -
mercially-availabl e assembl y lube .
2 . Coa t th e ne w ca m boo t wit h a commercially-avail -
abl e assembl y lub e an d instal l i n th e caliper .
3 . Appl y commercially-availabl e assembl y lub e t o th e
pi n contactin g are a o f th e cam , an d instal l th e ca m
an d leve r assembl y int o th e calipe r body .
4 . Instal l th e retur n spring .
CAUTION :
• Whe n th e ca m an d leve r wer e separated , b e sur e
t o assembl e the m befor e installin g th e ca m in
th e calipe r body . Instal l th e leve r an d sprin g
washer , appl y lockin g agen t t o th e threads , an d
tighte n th e parkin g nu t whil e holdin g th e leve r
wit h a vise .
• Avoi d damagin g th e ca m boo t sinc e i t mus t b e
installe d befor e th e cam .
• Whe n installin g th e cam , d o no t allo w th e ca m
boo t lip s t o tur n outsid e in .5. Instal l th e pi n in th e cam .
6. Instal l a ne w O-rin g o n th e sleev e piston .
7. Instal l th e sleev e pisto n s o th e hol e i n th e botto m o f
the pisto n i s aligne d wit h th e pi n i n th e cam , an d
the tw o pin s o n th e pisto n ar e aligne d wit h th e
hole s i n th e caliper .
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8. Instal l a ne w cu p wit h it s groov e facin g th e bearin g
A sid e o n th e adjustin g bolt .
9 . Fi t th e bearin g A , spacer , adjustin g sprin g B an d
sprin g cove r o n th e adjustin g bolt , an d instal l i n th e
calipe r cylinder .
NOTE: Instal l th e bearin g A wit h it s ope n en d fac -
ing th e spacer .
11. Instal l th e specia l too l a s shown .
12 . Compres s th e sprin g unti l i t bottom s out .
13 . Chec k tha t th e flare d en d o f th e sprin g cove r i s
belo w th e circli p groove .
14 . Instal l th e circlip , the n remov e th e brak e sprin g
compressor .
NOTE: Chec k tha t th e circli p is seate d in th e groov e
properly .
SNAP RIN G PLIER S07914-SA5000 0
BRAKE SPRIN GCOMPRESSO R07HAE - SG0010 0
15. Instal l th e adjustin g nut , adjustin g sprin g A , an d
washer , the n secur e wit h th e circlip .
10
. Adjus t th e specia l too l a s shown .
BRAKE SPRIN G COMPRESSO R07HAE-SG0010 0
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Reassembly (cont'd )
Rear Calipe r
16. Coa t th e ne w pisto n sea l an d pisto n boo t wit h sili -
con s grease , an d instal l the m in th e caliper . 18
. Instal l th e brak e pa d retainer s an d brak e pads .
19 . Instal l th e pa d sprin g o n th e caliper .
20 . Instal l th e calipe r o n th e calipe r bracket , an d tighte n
the calipe r mountin g bolts .
21. Connec t th e brak e hos e t o th e calipe r wit h ne w seal -
ing washers , an d tighte n th e banj o bolt .
22. Connec t th e parkin g brak e cabl e t o th e ar m o n th e
caliper .
23 . Fil l th e brak e reservoi r up , an d blee d th e brak e sys -
te m (se e pag e 19-11 ).
24 . Operat e th e brak e peda l severa l times , the n adjus t
th e parkin g brak e lever .
NOTE : Befor e adjustments , mak e sur e th e parkin g
brak e ar m o n th e calipe r touche s th e pin .
25 . Instal l th e calipe r shiel d an d tighte n th e bolts .
17 . Coa t th e outsid e o f th e pisto n wit h silicon e grease ,
and instal l i t o n th e adjustin g bol t whil e rotatin g i t
clockwise .
CAUTION : Avoi d damagin g th e pisto n an d pisto n
boot .
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Brake Hoses/Lines

Inspection

1. Inspect the brake hoses for damage, deterioration, leaks, interference or twisting.

2. Check the brake lines for damage, rusting and leakage. Also check for bent brake lines.

3. Check for leaks at hose and line joints or connections, and retighten if necessary.

4. Check the master cylinder and ABS modulator unit for damage and leakage.

CAUTION: Replace the brake hose clip whenever the brake hose is serviced.ProCarManuals.com