ACURA RL KA9 1996 Service Repair Manual

Illustrated Inde x
(cont'd )
Lubricat e al l interna l part s wit h engine oil durin g reassembly .
NOTE:
• Appl y liqui d gaske t t o th e matin g surface s o f th e rea r
cove r an d oi l pum p cas e befor e installin g them .
• Use liqui d gasket . Part No. 0871 8 - 0001 or 0871 8 - 0003 .
OIL PA N INNE RPIPEClea n whe n installing .
OIL FILTE R
OIL PA NAppl y liqui d gaske tto matin g surface .
8 x 1.2 5 mm22 N- m (2. 2 kgf-m ,
1 6 Ibf-ft )
SNAP RIN GInstal l wit h ope nside facin g up .
6 x 1. 0 m m12 N- m (1. 2 kgf-m , 8. 7 Ibf-ft )
TORQU E CONVERTE R
COVE R
12 x 1. 0 m m74 N- m (7. 5 kgf-m ,
5 4 Ibf-ft )
WASHE R
DRIV E PLAT E
Chec k fo r cracks .
CRANKSHAF T OI L
SEA L
Installation , pag e 7-2 2Replace .
6 x 1. 0 m m12 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft )
REAR COVE RApply liqui d gaske t t obloc k matin g surface .O-RING
Replace .
DOWE L
PIN
6 x 1. 0 m m12 N- m (1. 2 kgf-m ,8.7 Ibf-ft )
CRANKSHAF T OI L
SEA L
Installation ,pages, 7-3 0 an d 8-1 5Replace .
8 x 1.2 5 mm22 N- m (2. 2 kgf-m ,
1 6 Ibf-ft )
OIL PUM POverhaul , pag e 8-1 2Appl y liqui d gaske tto bloc k matin g surface .
O-RINGSReplace .
DOWE
L
PIN
O-RIN GReplace .
O-RINGSReplace .
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10 x 1.2 5 mm49 N- m (5. 0 kgf-m , 3 6 Ibf-ft )
9 x 1.2 5 mm39 N- m (4. 0 kgf-m , 2 9 Ibf-ft )Apply engin e oi l t o th e bol tthread s an d th e washer .11 x 1. 5 m m76 N- m(7.8 kgf-m , 5 6 Ibf-ft )Apply engin e oi l t o th e bol tthread s an d th e washers .
NOTE : Afte r torquin g
eac h cap , tur n crankshaf t
t o chec k fo r binding .
CRANKSHAF T
En d play , pag e 7- 7
Runout , Tape r an d
Out-of-Round , pag e 7-1 3
Installation , pag e 7-2 4
MAI N BEARIN G CA P
MAI N BEARING S
Clearance , pag e 7- 8
Selection , pag e 7- 8
NOTE : Ne w mai n bearing s
must b e selecte d b y matchin gcrank an d bloc k identificatio nmarkings.
RUBBER CA P
DOWE L PI N
6 x 1. 0 m m12 N- m (1. 2 kgf-m , 8. 7 Ibf-ft )
OIL BREATHE RCOVER
THRUS T WASHER S
Groove d side s fac e outward .
NOTE : Thrus t washe r thicknes s
is fixe d an d mus t no t b e change dby grindin g o r shimming .
(cont'd)
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Illustrated Inde x
(cont'd )
NOTE: Ne w ro d bearing s mus t b e selecte d b y matchin g
connectin g ro d assembl y an d crankshaf t identificatio n
markings (se e pag e 7-9 ).
Lubricat e al l interna l part s wit h engin e oi l durin g
reassembly .
PISTONInspection , pag e 7-1 4
NOTE : T o maintai n prope r clearance ,
matc h th e lette r o n th e pisto n to p wit h
th e lette r fo r eac h cylinde r stampe d o n
th e block .
O n th e pisto n to p O n th e bloc k
CYLINDE R BLOC KCylinde r bor e inspection , pag e 7-1 5
Warpag e inspection , pag e 7-1 5
Cylinde r bor e honing , pag e 7-1 6 PISTO
N PI N
Removal , pag e 7-1 6
Installation , pag e 7-1 9
Inspection , pag e 7-1 8
PISTO N RING S
Replacement , pag e 7-2 0
Measurement , page s 7-2 0 an d 7-2 1
Alignment , pag e 7-2 1
SNA
P RIN G
CONNECTIN G RO D
En d play , pag e 7- 7
Selection , pag e 7-1 7
Inspec t th e to p o f eac h cylinde r bor e
fo r carbo n build-u p o r a ridg e
befor e removin g th e piston .
Remov e ridg e if necessary , pag e 7-1 1
CYLINDE R BOR E SIZE SNOTE : T o maintai n prope r pisto n clearance ,
matc h thes e letter s wit h th e letter s o n th e
pistons . Th e letter s o n th e bloc k rea d fro m
fron t t o rear , No . 1 throug h No . 3 cylinder s
o n th e firs t lin e an d No . 4 throug h No . 6
cylinder s o n th e secon d line .
O n th e bloc k O n th e pisto n to p
CONNECTIN
G RO D
BEARING SClearance , pag e 7- 9
Selection , pag e 7- 9
CONNECTIN
G RO D CA P NU T
9 x 0.7 5 mm44 N- m (4. 5 kgf-m ,33 Ibf-ft )Apply engin e oi l t o th e nu tthread sNOTE: Afte r torquin g eac h bearin g
cap , rotat e th e crankshaf t t o
chec k fo r binding .
CONNECTIN
G RO D BEARIN G CA P
Installation , pag e 7-2 5
NOTE : Instal l cap s s o th e
bearin g reces s is o n th e
sam e sid e a s th e reces s
in th e rod .
FRON T (timin g bel t side )
RIGH T BAN K
No. 1
No . 2
No . 3
No . 4
No . 5
No . 6
LEF T BAN K
No. 1No . 3
No . 6No . 4
N o lette rBA o r IB o r I l
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RING GEA R HOLDE R
07LA B-PV0010 0
12 x 1. 0 m m74 N- m(7.5 kgf-m , 5 4 Ibf-ft )
Drive Plat e
Replacemen t
Remove th e eigh t driv e plat e bolts , the n separat e th e
driv e plat e fro m th e crankshaf t flange . Afte r installation ,
tighte n th e bolt s i n a crisscros s pattern .
RING GEA R HOLDE R
07LA B-PV0010 0
ENGINEBLOCK
RING GEA R
Inspec t rin g gea r
teet h fo r wea r o r
damag e
Connectin g Ro d an d
Crankshaf t
End Pla y
Connectin g Ro d En d Play :
Standar d (New) : 0.1 5 - 0.3 0 m m
(0.00 6 - 0.01 2 in )
Servic e Limit : 0.4 0 m m (0.01 6 in )
• I f out-of-tolerance , instal l a ne w connectin g rod .
• I f stil l out-of-tolerance , replac e th e crankshaf t (se e
page s 7-1 0 an d 7-24 ).
Pus h th e crankshaf t firml y awa y fro m th e dia l indicator ,
an d zer o th e dia l agains t th e en d o f th e crankshaft . The n
pul l th e crankshaf t firml y bac k towar d th e indicator ; th e
dia l readin g shoul d no t excee d servic e limit .
SCREWDRIVE R
Crankshaft En d Play :
Standar d (New) : 0.1 0 - 0.2 9 m m
(0.00 4 - 0.01 1 in )
Servic e Limit : 0.4 5 m m (0.01 8 in )
• I f en d pla y i s excessive , inspec t th e thrust washer s
an d thrus t surfac e o n th e crankshaft . Replac e part s a s
necessary .
NOTE: Thrus t washe r thicknes s i s fixe d an d mus t no t b e
change d eithe r b y grindin g o r shimming .
Thrus t washer s ar e installe d wit h th e groove d sid e fac -
ing outward .
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Main Bearing s
Clearanc e
1. T o chec k mai n bearing-to-journa l oi l clearance ,
remov e th e mai n cap s an d bearin g halves .
2 . Clea n eac h mai n journa l an d bearin g hal f wit h a
clea n sho p towel .
3 . Plac e on e stri p o f plastigag e acros s eac h mai n jour -
nal.
NOTE : I f th e engin e is stil l i n th e vehicl e whe n yo u
bol t th e mai n ca p dow n t o chec k clearance , th e
weigh t o f th e crankshaf t an d flywhee l will flatte n
th e plastigag e furthe r tha n jus t th e torqu e o n th e
ca p bolts , an d giv e yo u a n incorrec t reading . Fo r a n
accurat e reading , suppor t th e crankshaf t wit h a jac k
unde r th e counterweight s an d chec k onl y on e bear -
ing a t a time .
4. Reinstal l th e bearing s an d caps , the n torqu e th e 9
m m cap bolts to 3 9 N- m (4. 0 kgf-m , 2 9 Ibf-ft) . Torqu e
th e 1 1 m m ca p bolt s to 7 6 N- m (7. 8 kgf-m , 5 7 Ibf-ft) .
5. Torqu e th e sid e bolt s to 4 9 N- m (5. 0 kgf-m , 3 6 Ibf-ft) .
6 . Remov e th e cap s an d bearings , an d measur e th e
wides t par t o f th e plastigage .
Mai n Bearing-to-Journa l Oi l Clearance :
Standar d (New) : 0.02 0 - 0.04 4 m m
(0.000 8 - 0.001 7 in )
Servic e Limit : 0.0 5 m m (0.00 2 in )
PLASTIGAG E STRI P
Selectio n
CAUTION : I f th e code s ar e indecipherabl e becaus e o f a n
accumulatio n o f dir t an d dust , d o no t scru b the m wit h a
wir e brus h o r scraper . Clea n the m onl y wit h solven t o r
detergent .
Crankshaf t Bor e Cod e Location s
Letters o r bar s hav e bee n stampe d o n th e en d of the
cylinde r bloc k a s a cod e fo r th e siz e o f eac h o f th e fou r
mai n journa l bores . Us e them , an d th e number s o r bar s
stampe d o n th e crankshaf t (code s fo r mai n journa l size) , t o
choos e th e correc t bearings .
No. 4 JOURNA L(DRIVE PLAT E END )
No. 1 JOURNA L(PULLEY END )
Main Journa l Cod eLocation s (Number s o r Bars )
Bearin g Desig n
COLO R
No. 1 JOURNA L(PULLEY END )No. 4 JOURNA L(DRIVE PLAT E EN D
Bearin g Identificatio nColor cod e i s o n th eedg e o f th e bearing .
LOWER BEARIN G
GROOVE
UPPER BEARIN G
NOTE: Whe n usin g bearin g halve s o f differen t colors , i t
doe s no t matte r whic h colo r i s use d in th e to p o r bottom .
Smallermainjourna l
Smalle rbearing(thicker )
7. I f th e plastigag e measure s to o wid e o r to o narrow ,
remov e th e crankshaft , an d remov e th e uppe r hal f
o f th e bearing . Instal l a new , complet e bearin g wit h
th e sam e colo r cod e (selec t th e colo r a s show n i n
th e righ t colum n o f thi s page) , an d rechec k th e
clearance .
CAUTION: D o no t file , shim , o r scrap e th e bearing s
or th e cap s t o adjus t clearance .
8. I f th e plastigag e show s th e clearanc e is stil l incor -
rect, tr y th e nex t large r o r smalle r bearin g (th e colo r
liste d abov e o r belo w tha t one) , an d chec k again .
NOTE : I f th e prope r clearanc e canno t b e obtaine d
b y usin g th e appropriat e large r o r smalle r bearings ,
replac e th e crankshaf t an d star t over .
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6. I f th e plastigag e measure s to o wid e o r to o narrow ,
remov e th e uppe r hal f o f th e bearing , instal l a new ,
complet e bearin g wit h th e sam e colo r cod e (selec t
th e colo r a s show n i n th e righ t colum n o f thi s page) ,
an d rechec k th e clearance .
CAUTION : D o no t file , shim , o r scrap e th e bearing s
o r th e cap s to adjus t clearance .
7 . I f th e plastigag e show s th e clearanc e i s stil l incor -
rect , tr y th e nex t large r o r smalle r bearin g (th e colo r
liste d abov e o r belo w tha t one) , an d chec k clear -
anc e again .
NOTE : I f th e prope r clearanc e canno t b e obtaine d
b y usin g th e appropriat e large r o r smalle r bearings ,
replac e th e crankshaf t an d star t over . NOTE
: Whe n usin g bearin g halve s o f differen t colors , i t
doe s no t matte r whic h colo r i s use d i n th e to p o r bottom .
Connectin g Ro d Bearing s
Clearanc e
1. Remov e th e connectin g ro d ca p an d bearin g half .
2 . Clea n th e crankshaf t ro d journa l an d bearin g hal f
wit h a clea n sho p towel .
3 . Plac e a plastigag e acros s stri p th e ro d journal .
4 . Reinstal l th e bearin g hal f an d cap , an d torqu e th e
nut s t o 4 4 N- m (4. 5 kgf-m , 3 3 Ibf-ft) .
NOTE : D o no t rotat e th e crankshaf t during inspec -
tion.
5. Remov e th e ro d ca p an d bearin g half , an d measur e
th e wides t par t o f th e plastigage .
Connectin g Ro d Bearing-to-Journa l Oi l Clearance :
Standar d (New) : 0.02 2 - 0.04 6 m m
(0.000 9 - 0.001 8 in )
Servic e Limit : 0.0 5 m m (0.00 2 in )
PLASTIGAG E STRI P
Selectio n
CAUTION : I f th e code s ar e indecipherabl e becaus e o f
a n accumulatio n o f dir t an d dust , d o no t scru b the m
wit h a wir e brus h o r scraper . Clea n the m onl y wit h sol -
ven t o r detergent .
Connectin g Ro d Cod e Locatio n
Number s o r bar s hav e bee n stampe d o n th e sid e o f eac h
connectin g ro d a s a cod e fo r th e siz e o f th e bi g end . Us e
them , an d th e letter s o r bar s stampe d o n th e cran k
(code s fo r ro d journa l size) , t o choos e th e correc t bear -
ings.
Half o f numbe r i sstampe d o n bearin gcap an d th e othe rhalf i s stampe d o nconnectin g rod .
Connectin g Ro d Journa l Cod e Location s (Letter s o r Bars )
Bearin g Identificatio nColor cod e is o n th eedg e o f th e bearing .
Smallerrodjourna l
Smalle rbearing(thicker )
Small bearin g (thicker )
Larger bi g en d bor e
No. 6 JOURNA L(DRIVE PLAT E END )
No. 1 JOURNA L(PULLEY END )
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Pistons and Crankshaft

Removal

1. Remove the balancer gear case.

O-RING

Replace.
3. Hold the balancer shaft as shown below, then

remove the rear balancer weight.

REAR BALANCER

WEIGHT

4. Pull out the balancer shaft.

NOTE: Take care not to damage the journals when

removing the balancer shaft.
BALANCER GEAR

CASE
DOWEL

PIN

2. Remove the balancer shaft rear cover.

BALANCER SHAFT

REAR COVER

O-RING

Replace.

BALANCER

SHAFTProCarManuals.com

5. Remov e th e balance r shaf t holde r (se e pag e 7-3 ).
6 . Remov e th e oi l pa n assembly .
7 . Remov e th e rea r cover .
DOWE LPIN
9. I f yo u ca n fee l a ridg e o f meta l o r har d carbo n aroun d
the to p o f an y cylinder , remov e it wit h a ridg e reamer .
Follow th e reame r manufacturer' s instructions .
CAUTION : I f th e ridg e is no t removed , i t ma y damag e
th e piston s a s the y ar e pushe d out .
10 . Remov e th e connectin g ro d cap s afte r settin g th e
cran k pi n a t BD C fo r eac h cylinder . Remov e th e pis -
ton assembl y b y pushin g o n th e connectin g rod .
CAUTION : Tak e car e no t t o damag e th e cran k pi n o r
cylinde r wit h th e connectin g rod .
CORREC TRIDG
E REAME R
(Commerciall yavailable)
PISTON
INCORREC T
PISTON
OIL PUM P
DOWE LPIN
O-RING SReplace .
O-RINGReplace .
REA R COVE R
8. Remov e th e oi l pump .
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Pistons and Crankshaft

Removal (cont'd)

11. Remove the bearing from the cap. Keep all caps/bear-

ings in order.

12. Remove the upper bearing halves from the connecting

rods, and set them aside with their respective caps.

13. After removing each piston/connecting rod assem-

bly, reinstall the cap on the rod.

14. To avoid mixup during reassembly, mark each pis-

ton/connecting rod assembly with its cylinder num-

ber.

NOTE: The existing number on the connecting rod

does not indicate its position in the engine, it indicates

the rod bore size.

15. Remove the bearing cap bolts and bearing cap side

bolts, then remove the bearing cap.

RUBBER

CAP
MAIN BEARING

CAP
To help with removal of the caps, install the cap bolts in

the outside bolt holes.

CAP BOLT

MAIN BEARING CAPS

16. Lift the crankshaft out of the cylinder block, being

careful not to damage the journals.

CRANKSHAFT

17. Reinstall the main caps and bearings on the cylin-

der block in proper order.ProCarManuals.com

Crankshaft

Inspection

• Clean the crankshaft oil passages with pipe cleaners

or a suitable brush.

• Check the keyway and threads.

Alignment

• Measure runout on all main journals to make sure the

crankshaft is not bent.

• The difference between measurements on each journal

must not be more than the service limit.

Crankshaft Total Runout:

Standard (New): 0.020 mm (0.0008 in) max.

Service Limit: 0.030 mm (0.0012 in)

DIAL INDICATOR

Rotate two complete

revolutions.

Support with lathe-

type tool or V-blocks.
Out-of-Round and Taper

• Measure out-of-round at the middle of each rod and

main journal in two places.

• The difference between measurements on each journal

must not be more than the service limit.

Journal Out-of-Round:

Standard (New): 0.004 mm (0.0002 in) max.

Service Limit: 0.010 mm (0.0004 in)

Measure taper

at edges.

Measure out-of-

round at middle.

• Measure taper at the edges of each rod and main

journal.

• The difference between measurements on each journal

must not be more than the service limit.

Journal Taper:

Standard (New): 0.005 mm (0.0002 in) max.

Service Limit: 0.010 mm (0.0004 in)ProCarManuals.com