ACURA TL 1995 Service Repair Manual

10. Remov e th e throttl e cabl e b y loosenin g th e locknut ,
then sli p th e cabl e en d ou t o f th e accelerato r linkag e
(see pag e 5-5 ).
11 . Remov e th e brak e booste r vacuu m hose , evaporativ e
emissio n (EVAP ) contro l caniste r hos e an d vacuu m
hose s (se e pag e 5-5 ).
12 . 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 o r spark s awa y fro m th e
wor k area . Drai n fue l onl y int o a n approve d container .
13 . Remov e th e fue l fee d hos e an d fue l retur n hos e (se e
pag e 5-6 ).
14 . Remov e th e uppe r radiato r hos e an d wate r bypas s
hoses.
WATE R BYPAS SHOSES
UPPER RADIATO R
HOS E
15. Remov e th e heate r hose s an d wir e harnes s clamps .
HEATERHOSES
ENGIN E WIR EHARNES S CLAM P
6 x 1. 0 m m12 N- m (1. 2 kgf-m , 8. 7 Ibf-ft )
16. Remov e th e breathe r hose , vacuu m hoses , wate r
bypas s hos e an d wir e harnes s holder .
BREATHE RHOSE
6 x 1. 0 m m12 N- m (1. 2 kgf-m ,
8. 7 Ibf-ft )
VACUU MHOSE
VACUU MHOSE
WATER BYPAS S
HOSE S
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Cylinder Head

Removal (cont'd)

17. Remove the spark plug wires, distributor and ground

cables from the cylinder head.

O-RING

Replace.
8 x
1.25
mm

18 N-m (1.8 kgf-m,

13 Ibf-ft)

DISTRIBUTOR

GROUND

CABLES

18. Remove the wire harness covers and positive crank-

case ventilation (PCV) hose.

6 x 1.0 mm

9.8 N-m (1.0 kgf-m,

7.2 Ibf-ft)

PCV HOSE

WIRE HARNESS

COVERS

6 x 1.0 mm

12 N-m (1.2 kgf-m, 8.7 Ibf-ft)
19. Remove the engine wire harness connectors and

wire harness clamps from the cylinder head and the

intake manifold.

• Five injector connectors

• TDC/CKP/CYP sensor connector

• CKF sensor connector

• Idle air control (IAC) valve connector

• Engine coolant temperature (ECT) sensor connec-

tor

• ECT gauge sending unit connector

• ECT switch connector

• Exhaust gas recirculation (EGR) valve lift sensor

connector

• Throttle position sensor connector

• Intake air bypass (IAB) control solenoid valve con-

nector

• Evaporative emission (EVAP) purge control sole-

noid valve connector

20. Remove the ground cable and water bypass hose.

GROUND

CABLE

6 x 1.0 mm

12 N-m (1.2 kgf-m, 8.7 Ibf-ft)

WATER BYPASS

HOSEProCarManuals.com

21. Remov e th e intak e manifold .
8 x 1.2 5 mm22 N- m (2. 2 kgf-m , 1 6 Ibf-ft )
GASKE T
Replace .
INTAKEMANIFOL D
8 x 1.2 5 mm22 N- m (2. 2 kgf-m , 1 6 Ibf-ft )
22. Remov e th e wir e harnes s covers , the n disconnec t
th e primar y heate d oxyge n (HO2S ) connector .
PRIMARY HO2 S
CONNECTO R
WIR E HARNES S
COVER S 8 x 1.2 5 m m
2 2 N- m (2. 2 kgf-m , 1 6 Ibf-ft )
23. Remov e th e self-lockin g nu t an d exhaus t manifol d
brackets .
EXHAUS T MANIFOL DBRACKETS
24. Remov e th e exhaus t manifol d (se e pag e 9-4 ).
25 . Remov e th e groun d cable s an d cylinde r hea d cover .
GROUN DCABLES
CYLINDE R HEA DCOVE R
WASHE R
SELF-LOCKIN G NU T10 x 1.2 5 mm54 N- m (5. 5 kgf-m , 4 0 Ibf-ft )
Replace .
GASKETReplace .8 x 1.2 5 mm27 N- m (2. 8 kgf-m ,20 Ibf-ft )
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Cylinder Hea d
Remova l (cont'd )
26. Remov e th e tinnin g bel t (se e pag e 6-10 ).
27 . Remov e th e CY P sensor , the n remov e th e camshaf t
pulle y (se e pag e 6-13 ).
28 . Remov e th e CK F senso r (se e pag e 6-13 ).
29 . Remov e th e bac k cover , the n remov e th e TDC/CK P
senso r (se e pag e 6-13 ).
30 . Remov e th e cylinde r hea d bolts , the n remov e th e
cylinde r head .
CAUTION : T o preven t warpage , unscre w th e bolt s
i n sequenc e 1/ 3 tur n a t a time ; repea t th e sequenc e
unti l al l bolt s ar e loosened .
CYLINDE R HEA D BOLT S LOOSENIN G SEQUENCE :
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Rocker Arm Assembly

Removal

1. Loosen the adjusting screws, then remove the bolts

and the rocker arm assembly.

NOTE:

• Unscrew the camshaft holder bolts two turns at a

time, in a crisscross pattern, to prevent damaging

the valves or rocker arm assembly.

• When removing the rocker arm assembly, do not

remove the camshaft holder bolts. The bolts will

keep the camshaft holders, the springs and the

rocker arms on the shafts.

ADJUSTING SCREW

ADJUSTING SCREW

CAMSHAFT HOLDER BOLTS LOOSENING SEQUENCE:

6 mm BOLTS

8 mm BOLTSProCarManuals.com

Disassembly/Reassembly
NOTE:
• Identif y part s a s the y ar e remove d t o ensur e reinstallatio n i n origina l locations .
• Inspec t rocke r shaft s an d rocke r arm s (se e pag e 6-24 ).
• Rocke r arm s mus t b e installe d i n th e sam e positio n i f reused .
• Whe n removin g o r installin g th e rocke r ar m assembly , d o no t remov e th e camshaf t holde r bolts . Th e bolt s wil l kee p th e
holders , spring s an d rocke r arm s o n th e shaft .
• Whe n reassembling , fi t th e projectio n o f th e intak e rocke r shaf t t o th e notc h i n th e camshaf t holder .
Prio r t o reassembling , clea n al l th e part s i n solvent , dr y the m an d appl y lubrican t t o an y contac t points .
Letter "B " i s stampe don rocke r arm .Lette r "A " i s stampe don rocke r arm .
No. 6CAMSHAF THOLDER
INTAKE ROCKE RSHAFT A(short , 2 places )
No. 7CAMSHAF THOLDER
No. 5CAMSHAF THOLDER
INTAKE ROCKE RSHAFT B(long , 4 places )
SPRING a SPRIN G b
(short , 2 places ) (long , 4 places )
No. 1CAMSHAF THOLDER
EXHAUS T ROCKE R AR M
(1 0 places )
EXHAUS T ROCKE R SHAF T
WAV
E WASHE R
( 6 places )
No. 2CAMSHAF THOLDER
No. 3CAMSHAF THOLDER
No. 4CAMSHAF THOLDER
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Camshaft

Inspection

NOTE:

• Do not rotate the camshaft during inspection.

• Remove the rocker arms and rocker shafts.

1. Put the camshaft and the camshaft holders on the

cylinder head, then tighten the bolts to the specified

torque.

Specified torque:

8 mm bolts: 22 N-m (2.2 kgf-m, 16 Ibf-ft)

Apply engine oil

6 mm bolts: 12 N-m (1.2 kgf-m, 8.7 Ibf-ft)

Apply engine oil

6 mm bolts:

2. Seat the camshaft by pushing it toward the distributor

end of cylinder head.

3. Zero the dial indicator against the end of the distrib-

utor drive, then push the camshaft back and forth

and read the end play.

Camshaft End Play:

Standard (New): 0.05 - 0.15 mm

(0.002 - 0.006 in)

Service Limit: 0.5 mm (0.02 in)
4. Remove the bolts, then remove the camshaft hold-

ers from the cylinder head.

— Lift the camshaft out of the cylinder head, wipe it

clean,
then
inspect
the
lift
ramps.
Replace
the

camshaft if lobes are pitted, scored, or excessively

worn.

— Clean the camshaft bearing surfaces in the cylin-

der head, then set the camshaft back in place.

— Insert a plastigage strip across each journal.

5. Install the camshaft holders, then tighten the bolts

to the specified torque shown in the left column of

this page.

6. Remove the camshaft holders. Measure the widest

portion of plastigage on each journal.

Camshaft-to-Holder Oil Clearance:

Standard (New): 0.050 - 0.089 mm

(0.0020 - 0.0035 in)

Service Limit: 0.15 mm (0.006 in)

PLASTIGAGE STRIPProCarManuals.com

7. If the camshaft-to-holder oil clearance is out of tol-

erance:

— 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.

Camshaft Total Runout:

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

Service Limit: 0.04 mm (0.002 in)

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.
8. Check the cam lobe height wear.

Cam Lobe Height Standard (New):

INTAKE: 39.203 mm (1.5434 in)

EXHAUST: 38.875 mm (1.5305 in)

Check this area for wear.ProCarManuals.com

Rocker Arms and Shafts

Clearance Inspection

Measure both the intake rocker shafts and the exhaust

rocker shaft.

1. Measure diameter of shaft at first rocker location.

Inspect rocker arm

face for wear.

MICROMETER

2. Zero gauge to shaft diameter.

CYLINDER BORE

GAUGE

MICROMETER
3. Measure the inside diameter of the rocker arm, and

check for out-of-round condition.

Rocker Arm-to-Shaft Clearance:

Standard (New):

Intake: 0.017-0.050 mm

(0.0007 - 0.0020 in)

Exhaust: 0.018 - 0.054 mm

(0.0007 - 0.0021 in)

Service Limit: 0.08 mm (0.003 in)

Inspect rocker arm

face for wear.

Repeat for all rockers.

— If over limit, replace rocker shaft and all overtol-

erance rocker arms.ProCarManuals.com

Valves, Valv e Spring s an d Valv e Seal s
Remova l
NOTE: Identif y valve s an d valv e spring s a s the y ar e
remove d s o tha t eac h ite m ca n b e reinstalle d i n it s origina l
position .
1. Usin g a n appropriate-size d socke t an d plasti c mal -
let , lightl y ta p th e valv e retaine r t o loose n th e valv e
keeper s befor e installin g th e valv e sprin g compres -
sor.
PLASTI C MALLE T
SOCKE T
2. Instal l th e valv e sprin g compressor . Compres s th e
sprin g an d remov e th e valv e keeper .
VALVE SPRIN G
COMPRESSO R
ATTACHMENT07757-PJ1010 A
VALVE SPRIN G COMPRESSO R
(Commerciall y available )
3. Instal l th e specia l too l a s shown .
VALVE GUID E SEA L REMOVE R
LISL E P/ N 5790 0 o r KD335 0
(Commerciall y available )
SEALREMOVE R
VALV E SEA L
4. Remov e th e valv e seal .
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