1996 ACURA RL KA9 lock

4. Remove the bolts, then remove the camshaft hold-

ers from the cylinder head.

5. Lift the camshaft out of the cylinder head, wipe it

clean, then inspect the lift ramps. Replace the

camshaft if any lobes are pitted, scored, or excessively

worn.

6. Clean the camshaft bearing surfaces in the cylinder

head, then set the camshaft back in place.

7. Place a plastigage strip across each journal.

8. Install the camshaft holders, then tighten the bolts

to the specified torque shown on the previous page.

9. Remove the camshaft holders. Measure the widest

portion of plastigage on each journal.

PLASTIGAGE STRIP
If camshaft-to-holder oil clearance is out of toler-

ance:

And the camshaft has already been replaced,

you must replace the cylinder head.

If the camshaft has not been replaced, first check

the total runout with the camshaft supported on

V-blocks.

Rotate camshaft

while measuring.

If the total runout of the camshaft is within toler-

ance, replace the cylinder head.

If the total runout is out of tolerance, replace the

camshaft and recheck. If the oil clearance is still

out of tolerance, replace the cylinder head.

11. Check cam lobe height wear.

Check this area for wear.
Cam Lobe Height Standard (New):

INTAKE 40.175 mm (1.5817 in)

EXHAUST 37.878 mm (1.4913 in)
Camshaft Total Runout:

Standard (New): 0.03 mm (0.001 in) max.

Service Limit: 0.04 mm (0.002 in)

Camshaft-to-Holder Oil Clearance:

Standard (New): 0.050 - 0.089 mm

(0.0020 - 0.0035 in)

Service Limit: 0.10 mm (0.004 in)ProCarManuals.com

Valve Guides
Reaming
NOTE: Fo r ne w valv e guide s only .
1 . Coa t bot h th e reame r an d valv e guid e wit h cuttin g
oil.
2. Rotat e th e reame r clockwis e th e ful l lengt h o f th e
valv e guid e bore .
REAME R HANDL EVALVE GUID EREAMER , 5. 5 m m
07HAH-PJ7010 B
Tur n reame r i n
clockwis e directio nonly.
3. Continu e t o rotat e th e reame r clockwis e whil e
removin g i t fro m th e bore .
4 . Thoroughl y was h th e guid e i n detergen t an d wate r
t o remov e an y cuttin g residue .
5 . Chec k th e clearanc e wit h a valv e (se e pag e 6-31 ).
Verif y tha t th e valv e slide s i n th e valv e guid e with -
ou t exertin g pressure .
ProCarManuals.com

Cylinder Heads

Installation (cont'd)

4. Install the cylinder heads on the cylinder block.

5. Tighten the cylinder head bolts sequentially in 2 or

3 steps.

Specified Torque:

76 N-m (7.8 kgf-m, 56 Ibf-ft)

NOTE:

We recommend using a beam-type torque wrench.

When using a preset-type torque wrench, be sure

to tighten slowly and not to overtighten.

If a bolt makes any noise while you are torquing

it, loosen the bolt and retighten it.

CYLINDER HEAD BOLTS TORQUE SEQUENCE

CYLINDER HEAD BOLTS

Apply engine oil to the bolt

threads.
6. Install the head cover gasket in the groove of the

cylinder head cover. Seat the recesses for the cam-

shaft first, then work it into the groove around the

outside edges.

NOTE:

Before installing the cylinder head cover gasket,

thoroughly clean the seal and the groove.

When installing, make sure the head cover gasket

is seated securely in the corners of the recesses

with no gap.

CORNERS OF

THE RECESS
HEAD COVER

GASKET

Clean.
CORNERS OF

THE RECESS

CYLINDER

HEAD COVER

7. Apply liquid gasket to the head cover gasket at the

four corners of the recesses.

NOTE:

Use liquid gasket, Part No. 08718 - 0001 or 08718

- 0003.

Check that the mating surfaces are clean and dry

before applying liquid gasket.

Do not install the parts if five minutes or more have

elapsed since applying liquid gasket. Instead, reap-

ply liquid gasket after removing old residue.

After assembly, wait at least 30 minutes before

filling the engine with oil.

Apply liquid gasket to

the shaded areas.ProCarManuals.com

Illustrated Index

Lubricate all internal parts with engine oil during reassembly.

NOTE: Use liquid gasket, Part No. 08718 - 0001 or 08718 - 0003.

BALANCER

SHAFT

O-RING

Replace.

DOWEL

PIN

BALANCER GEAR

CASE

Apply liquid gasket to

the block mating

surface.
BALANCER SHAFT

HOLDER

Apply liquid gasket around

the oil hole to the block

mating surface.

O-RING

Replace.
6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)
BALANCER SHAFT

REAR COVER

6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)

8 x
1.25
mm

25 N-m (2.5 kgf-m,

18 Ibf-ft)

REAR BALANCER

WEIGHT

O-RING

Replace.

OUTER PIPE

O-RING

Replace.
ENGINE OIL PRESSURE

SWITCH

18 N-m (1.8 kgf-m, 13 Ibf-ft)

1/8 in. BSPT (British

Standard Pipe Taper)

28 threads/inch. Use

proper liquid sealant.
6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)
O-RING

Replace.ProCarManuals.com

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
ProCarManuals.com

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 .
ProCarManuals.com

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