service ACURA TL 1995 Service Manual PDF

According t o stat e an d federa l regulations , failur e t o perfor m maintenanc e o n th e item s marke d wit h a n asteris k (* ) wil l no t voi d customer' s emissio n war -
ranties . However , Acur a recommend s tha t al l maintenanc e service s b e performe d a t th e recommende d tim e o r mileag e perio d t o ensur e long-ter m reliability .
Fo r 199 8 Canad a Model : Follo w th e Sever e Condition s Maintenanc e Schedul e fo r 199 8 Mode l o n page s 4-1 4 an d 4-15 .
17-22
16-3
19-3 0
10-5, 14-105 ,15-4, 19- 7
10- 3
9-5
11-11 8
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According t o stat e an d federa l regulations , failur e t o perfor m maintenanc e o n th e item s marke d wit h a n asteris k (* ) wil l no t voi d customer' s emissio n war -
ranties . However , Acur a recommend s tha t al l maintenanc e service s b e performe d a t th e recommende d tim e o r mileag e perio d t o ensur e long-ter m reliability .
Sever e Drivin g Conditions :
• Drivin g les s tha n 5 mile s ( 8 km ) pe r tri p or , i n freezin g temperatures , drivin g les s tha n 1 0 mile s (1 6 km ) pe r trip .
• Drivin g i n extremel y ho t [ove r 90° F (32°C) ] conditions .
• Extensiv e idlin g o r lon g period s o f stop-and-g o driving .
• Traile r towing , drivin g wit h a car-to p carrier , o r drivin g i n mountainou s conditions .
• Drivin g o n muddy , dusty , o r de-ice d roads .
NOTE: I f th e vehicl e is drive n OCCASIONALL Y unde r a "severe " condition , you shoul d follo w th e Norma l Condition s Maintenanc e Schedul e fo r 199 8 Mode l o n
page s 4-1 2 an d 4-13 .
17-2 2
16-3
19-3 0
10-5, 14-105 ,15-4, 19- 7
10- 3
9-5
11-11 8
23-16 8
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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

Valve Guides

Valve Movement

Measure the guide-to-stem clearance with a dial indica-

tor while rocking the stem in the direction of normal

thrust (wobble method).

Intake Valve Stem-to-Guide Clearance:

Standard (New): 0.04 - 0.09 mm

(0.002 - 0.004 in)

Service Limit: 0.15 mm (0.006 in)

Exhaust Valve Stem-to-Guide Clearance:

Standard (New): 0.10 - 0.16 mm

(0.004 - 0.006 in)

Service Limit: 0.20 mm (0.008 in)

Valve extended 10 mm out from seat.

If
measurement exceeds
the
service
limit,

recheck using a new valve.

If measurement is now within the service limit,

reassemble using a new valve.

If measurement still exceeds limit, recheck using

alternate method in the next column, then replace

valve and guide, if necessary.
NOTE: An alternate method of checking guide to

stem clearance is to subtract the O.D. of the valve

stem, measured with a micrometer, from the I.D. of

the valve guide, measured with an inside microme-

ter or ball gauge. Take the measurements in three

places along the valve stem and three places inside

the valve guide. The difference between the largest

guide measurement and the smallest stem mea-

surement should not exceed the service limit.

Intake Valve Stem-to-Guide Clearance:

Standard (New): 0.020 - 0.045 mm

(0.0008-0.0018 in)

Service Limit: 0.075 mm (0.0030 in)

Exhaust Valve Stem-to-Guide Clearance:

Standard (New): 0.05 - 0.08 mm

(0.002 - 0.003 in)

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

Main Bearings

Clearance

1. To check main bearing-to-journal oil clearance,

remove the main caps and bearing halves.

2. Clean each main journal and bearing half with a

clean shop towel.

3. Place one strip of plastigage across each main jour-

nal.

NOTE: If the engine is still in the car when you bolt

the main cap down to check clearance, the weight

of the crankshaft and flywheel will flatten the plasti-

gage further than just the torque on the cap bolt

and give you an incorrect reading. For an accurate

reading, support the crankshaft with a jack under

the counterweights and check only one bearing at a

time.

4. Reinstall the bearings and caps, then torque the

bolts.

1st step: 29 N-m (3.0 kgf-m, 22 Ibf-ft)

Final step: 74 N-m (7.5 kgf-m, 54 Ibf-ft)

NOTE: Do not rotate the crankshaft during inspec-

tion.

5. Remove the caps, and bearings again, and measure

the widest part of the plastigage.

Main Bearing-to-Journal Oil Clearance:

Standard (New): 0.018 - 0.048 mm

(0.0007 - 0.0019 in)

Service Limit: 0.053 mm (0.0021 in)

6. If the plastigage measures too wide or too narrow,

remove the crankshaft, and remove the upper half

of the bearing. '95 and '96 only: Install a new, com-

plete bearing with the same color (select the color

as shown in the right column of this page), and

recheck the clearance.

CAUTION: Do not file, shim, or scrape the bearings

or the caps to adjust clearance.

7. If the plastigage shows the clearance is still incor-

rect, try the next larger or smaller bearing (the color

listed above or below that one), and check again.

NOTE: If the proper clearance cannot be obtained

by using the appropriate larger or smaller bearings,

replace the crankshaft and start over.ProCarManuals.com

Connecting Rod Bearings

Clearance

1. Remove the connecting rod cap and bearing half.

2. Clean the crankshaft rod journal and bearing half

with a clean shop towel.

3. Place the plastigage across the rod journal.

4. Reinstall the bearing half and cap, and torque the

nuts to 32 N-m (3.3 kgf-m, 24 Ibf-ft).

NOTE: Do not rotate the crankshaft during inspec-

tion.

5. Remove the rod cap and bearing half, and measure

the widest part of the plastigage.

Connecting Rod Bearing-to-Journal Oil Clearance:

Standard (New): 0.015 - 0.043 mm

(0.0006 - 0.0017 in)

Service Limit: 0.05 mm (0.002 in)

PLASTIGAGE STRIP

6. If the plastigage measures too wide or too narrow,

remove the upper half of the bearing, install a new,

complete bearing with the same color code (select

the color as shown in the right column of this page),

and recheck the clearance.

CAUTION: Do not file, shim, or scrape the bearings

or the caps to adjust clearance.

7. If the plastigage shows the clearance is still incor-

rect, try the next larger or smaller bearing (the color

listed above or below that one), and check clear-

ance again.

NOTE: If the proper clearance cannot be obtained

by using the appropriate larger or smaller bearings,

replace the crankshaft and start over.ProCarManuals.com

The numbers in the middle of the API Service label tell

you the oil's SAE viscosity or weight. Select the oil for

your car according to this chart:

An oil with a viscosity of 5W - 30 is preferred for

improved fuel economy and year-round protection in the

car. You may use a 10W - 30 oil if the climate in your area

is limited to the temperature range shown on the chart.

4. Fill the engine with oil up to the specified level, run

the engine for more than three minutes, then check

for oil leakage.ProCarManuals.com

Component Location s
Index (cont'd )
PRIMARY HEATE D OXYGE N SENSO R (PRIMAR Y HO2S )
SECONDAR Y HEATE D OXYGE N SENSO R (SECONDAR Y HO2S )
SERVICE CHEC K CONNECTO R (2P )
Troubleshootin g procedures , pag e 11-3 2
PGM-F I
MAI N RELA Y
Rela y Testing , pag e 11-13 1
Troubleshooting , pag e 11-13 2
TCM
ENGIN E CONTRO L MODUL E (ECM )
Troubleshooting , pag e 11-5 2
DAT
A LIN K CONNECTO R (16P )
Troubleshootin gprocedures, pag e 11-3 2
For Troubleshooting of DTC related components, see chart on page 11-44.
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