power steering fluid ACURA TL 1995 Service Repair Manual

Lubrication Points

For the details of lubrication points and types of lubricants to be applied, refer to the illustrated index and various work

procedures (such as Assembly/Reassembly, Replacement, Overhaul, Installation, etc.) contained in each section.

No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21
LUBRICATION POINTS

Engine

Transmission

Brake Line (Includes Anti-lock brake line)

Power steering gearbox

Steering boots

Throttle cable end

Steering ball joints

Shift lever (Automatic transmission)

Pedal linkage

Intermediate shaft

Brake master cylinder pushrod

Fuel
fill
lid

Trunk hinges

Door hinges upper and lower

Door opening detents

Hood hinges and hood latch

Brake pipe joint (Front and rear wheel house)

Caliper Piston seal, Dust seal,

Caliper pin, Piston

Power steering system

Differential

A/C compressor
LUBRICANT

API Service Grade: Use SH "Energy Conserving II" or SJ

"Energy Conserving" grade oil.

The oil container may also display the API Certification

mark shown below. Make sure it says "For Gasoline

Engines."

SAE Viscosity: See chart below.

Genuine Honda Premium Formula Automatic

Transmission Fluid (ATF)*1

Genuine Honda DOT3 Brake Fluid*2

Steering grease P/N 08733 - B070E

Multi-purpose grease

Honda White Lithium Grease

Rust preventives

Silicone grease

Genuine Honda Power Steering Fluid-V or S*3

Hypoid gear Oil API service GL4 or GL5

Viscosity:

at above -18°C (0°F): SAE 90

at less than -18°C (0°F): SAE 80 W-90

Compressor oil:

DENSO: ND-OIL8 (P/N 38897 - PR7 - A01 AH or 38899 -

PR7-A01)

(For Refrigerant: HFC-134a (R-134a))

API SERVICE LABEL
API CERTIFICATION MARK
Recommended Engine Oil

Engine oil viscosity for ambient temperature ranges

NOTE: The following information as marked *1, *2 and *3 on above chart details for 1997 model:

*1: Always use Genuine Honda Premium Formula Automatic Transmission Fluid (ATF). Using a non-Honda ATF can affect

shift quality.

*2: Always use Genuine Honda DOT3 Brake Fluid. Using a non-Honda brake fluid can cause corrosion and decrease the

life of the system.

*3: Always use Genuine Honda Power Steering Fluid-V or S. Using any other type of power steering fluid or automatic

transmission fluid can cause increase wear and poor steering in cold weather.ProCarManuals.com

13. Remove the battery cables from the under hood fuse/

relay box, then remove the under-hood fuse/relay box.

14. Remove the engine wire harness connector.

BATTERY

CABLES

CONNECTOR
6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)

UNDER-HOOD

FUSE/RELAY

BOX

6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)

15. Raise the power steering (P/S) fluid reservoir, then

remove the vacuum hoses, vacuum tube and vacuum

tank.

NOTE: Do not disconnect the P/S hoses.

6 x 1.0 mm

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

VACUUM

TANK

VACUUM

HOSES
VACUUM

TUBE
16. Disconnect the ignition control module (ICM) con-

nector, and remove the engine ground cable.

GROUND CABLE
6 x 1.0 mm

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

6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)

ICM CONNECTOR

17. Disconnect the engine wire harness connector on

the right side of the engine compartment.

18. Remove the ground cable and wire harness clamp.

6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)
GROUND

CABLE
6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)

ENGINE WIRE

HARNESS CONNECTORProCarManuals.com

41. Disconnect the vehicle speed sensor (VSS) connec-

tor, then remove the VSS/power steering speed

sensor.

Do not disconnect the fluid hoses.

6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)
VSS CONNECTOR

VSS/POWER STEERING

SPEED SENSOR

42. Remove the heat shields from exhaust pipe A.

HEAT

SHIELDS
6 x 1.0 mm

12 N-m (1.2 kgf-m,

8.7 Ibf-ft)
43. Remove exhaust pipe A.

EXHAUST

PIPE A

GASKET

Replace.
SELF-LOCKING NUT

8 x
1.25
mm

22 N-m (2.2 kgf-m, 16 Ibf-ft)

Replace.

GASKETS

Replace.

GASKET

Replace.

TWC
6 x 1.0 mm

9.8 N-m (1.0 kgf-m,

7.2 Ibf-ft)
SELF-LOCKING NUT

8 x
1.25
mm

22 N-m (2.2 kgf-m,

16 Ibf-ft)

Replace.
SELF-LOCKING NUTS

10 x
1.25
mm

54 N-m (5.5 kgf-m,

40 Ibf-ft)

Replace.

44. Remove the wire harness cover and grommet, then

remove the three way catalytic converter (TWC).

SELF-LOCKING NUT

10 x
1.25
mm

32 N-m (3.3 kgf-m,

24 Ibf-ft)

Replace.
GROMMET

WIRE HARNESS

COVERProCarManuals.com

Power Steering Hoses and Pipes

Replacement

NOTE:

• Slide each hose over the corresponding pipe up to

the stop on the pipe. Install the clamp or adjustable

clamp at the specified distance from the hose end as

shown.

• Add the power steering fluid to the specified level on

the reservoir and check for leaks (refer to the '95 - 98

Acura 2.5TL Service Manual, P/N 61SW504).
CAUTION: Check all clamps for deterioration and defor-

mation; replace the clamps with new ones if necessary.

ADJUSTABLE HOSE CLAMP:
HOSE CLAMP:

Slide the hose over the pipe until it contacts the

stop.
Slide the hose over the pipe until it contacts the

stop.

2.5
-
5.5
mm

(0.01
-
0.22
in)
2.0
-
4.0
mm

(0.08
-
0.16
in)
2.5
-
5.5
mm

(0.01- 0.22 in)

INLET HOSE
RETURN HOSE

RESERVOIR

SENSOR RETURN HOSE

RETURN HOSE

SENSOR RETURN

HOSE

VALVE BODY UNIT

16 mm FLARE NUT

28 N-m (2.9 kgf-m, 21 Ibf-ft)

12 mm FLARE NUT

13 N-m (1.3 kgf-m, 9 Ibf-ft)

RETURN LINE
FEED LINE

(OUTLET HOSE)

11 N-m

(1.1 kgf-m 8 Ibf-ft)

PUMP

SENSOR INLET

HOSE

SENSOR INLET

LINE

POWER STEERING

SPEED SENSOR
FEED LINE
11 N-m (1.1 kgf-m,

8 Ibf-ft)
SENSOR RETURN LINEProCarManuals.com

Reassembly

NOTE:

• Clean the disassembled parts with a solvent, and dry them with compressed air. Do not dip the rubber parts in a sol-

vent.

• Always replace the O-rings and rubber seals with new ones before assembly.

• Apply the recommended power steering fluid to the parts indicated in the assembly procedures.

• Do not allow dust, dirt, or other foreign materials to enter the power steering system.

• Use the appropriate special tools where necessary.

FLANGE BOLT

9 N-m (0.9 kgf-m, 6.5 Ibf-ft)
FLANGE BOLT

20 N-m (2.0 kgf-m, 14 Ibf-ft)

CAP
PINION DUST COVER

VALVE HOUSING

26 N-m (2.7 kgf-m, 20 Ibf-ft)

CYLINDER LINE A

VALVE OIL SEAL

Replace.

SHIMS

CYLINDER END

78 N-m (8.0 kgf-m, 58 Ibf-ft)

CYLINDER END SEAL

Replace.
BACKUP RING

Replace.
CAP SEAL

Replace.

PRESSURE CONTROL

VALVE
SPRING

HOUSING SEAL

Replace.

CYLINDER LINE B
VALVE BODY
ASSIST CONTROL

VALVE

VALVE SEAL RING

Replace.

ROLLER BEARING

Replace.

O-RING

Replace.

SLEEVE SEAL

RINGS

Replace.
CIRCLIP

Replace.

SLEEVE
20 N-m (2.0 kgf-m, 14 Ibf-ft)

BACKUP RING

PINION SHAFT
LOCKNUT

RACK GUIDE SCREW

O-RING

Replace.
SPRING
RACK GUIDE

STEERING RACK
CYLINDER END SEAL

Replace.
PISTON SEAL RING

Replace.
CYLINDER HOUSING

GEARBOX HOUSING
O-RING

Replace.
RUBBER STOP

Check for damage or

deterioration.
VALVE SEAL RING

Replace.
O-RING

Replace.ProCarManuals.com

Steering Gearbox

Reassembly (cont'd)

CYLINDER END SEAL

Replace.

VINYL TAPE

19. Remove the vinyl tape from the steering rack, then

push in the cylinder end seal with your finger.

NOTE:

• Remove any residue of tape adhesive.

• Take care not to damage the cylinder end seal

with the threads and burrs at the staked position

of the gearbox.

20. Install special to the steering gearbox, then clamp

the tool in a vise with soft jaws as shown.

CAUTION: Do not clamp the cylinder housing.

PULLER YOKE:

(Commercially available)

Snap-On® T/N CJ123-1

OTC® T/N 7372

or equivalent
21. Coat the inside surface of the cylinder end with

power steering fluid, then install the cylinder end by

screwing it into the cylinder housing.

22. Remove the puller yoke from the steering gearbox.

23. After tightening the cylinder end, stake the point of

the cylinder housing shown below.

NOTE: Stake the cylinder in the position opposite

from where the stake was removed during disas-

sembly.

CYLINDER END

CYLINDER END

78 N-m (8.0 kgf-m, 58 Ibf-ft)
BUSHING

Be careful not to damage

the bushing when inserting

the cylinder end.
Grooved side.,
Stake point. Depth: 1.0 mm (0.04 in)

CYLINDER HOUSING

4.0 mm
(0.16
in)

STEERING GEARBOX
16. Wrap vinyl tape around the rack end edges, and

coat the surface of the tape with the power steering

fluid.

NOTE: Make sure that the vinyl tape is wrapped care-

fully so that there is no stepped portion.

17. Coat the inside surface of the new cylinder end seal

with power steering fluid.

18. Install the cylinder end seal onto the steering rack

with its grooved side toward the piston.

CAUTION: When installing the cylinder end seal,

be careful not to damage the sealing lip face of the

seal with the edges of the steering rack.

Staked position.

Make sure the spring

is in the cylinder end seal.,ProCarManuals.com

System Descriptio n
This powe r steerin g syste m is speed-sensitive . It s mai n component s ar e a mechanica l spee d sensor , a rotar y valve-typ e
gearbox, an d a constan t volume , vane-typ e pump . Th e syste m regulate s th e powe r assis t accordin g to vehicl e speed , roa d
conditions , an d drivin g style . Th e amoun t o f powe r assis t change s linearl y fro m hig h assist , whe n drivin g a t lo w speed s o r
parking , t o lo w assist , whe n drivin g a t hig h speeds .
Fluid Flo w Diagra m
The flui d volum e fro m th e pump , whic h i s drive n b y th e cran k pulley , i s regulate d b y th e flo w contro l valv e buil t int o th e
pump . Th e regulate d flui d i s fe d t o th e valv e bod y uni t locate d outsid e th e pinio n shaf t o f th e steerin g gearbox . Th e flui d i s
regulate d t o th e prope r pressur e b y th e valve s i n th e valv e bod y uni t an d b y th e powe r steerin g spee d senso r befor e it
flow s t o th e powe r cylinder . Th e directio n o f th e flo w is determine d b y th e rotar y valve . Th e flui d the n returns to th e reser -
voi r throug h th e retur n passag e an d i s fe d t o th e pum p again .
To RESERVOI R
VALVE BOD Y UNI T
TORSIO N BA R
INPU T SHAF T
VALVE (SLEEVE )
RIGHT CYLINDE R PASSAG E
POWE R CYLINDE R
Steering Gearbo xLOW SPEE D FEE D PASSAG E
The steerin g gearbo x i s th e rack-and-pinio n type . Th e valv e bod y uni t consist s o f th e valv e bod y unit , wher e th e flui d pas -
sag e i s regulate d b y th e flui d pressure , an d th e assis t contro l valv e uni t whic h regulate s th e flui d passag e t o th e rotar y
valv e accordin g t o vehicl e speed .
ASSIST CONTRO L VALV E UNI T
STEERIN G RAC K VALV
E BOD Y UNI T
ToRESERVOI R
From PUM P
POWE R CYLINDE RCYLINDE
R LINE S ASSIS
T CONTRO L VALV E UNI T
PUM P
To POWE R STEERIN G
SPEE D SENSO R
PUM
P OUTLE T
HIGH-PRESSUR E
HIGH SPEE D
FEE D PASSAG E
POWER STEERIN G
SPEE D SENSO R
RESERVOI R
LEFT CYLINDE R
PASSAG E
ProCarManuals.com

One-way Valve (In Power Steering Speed

Sensor)

When the vehicle is moving at high speed, negative

pressure develops at the sensor inlet because the power

steering speed sensor is pumping faster than the fluid

can be supplied. To compensate for this, the outlet and

inlet ports are connected internally by a passage con-

taining a one-way valve that lets output fluid recirculate

to the inlet port to equalize pressure.

Driving at High Speed:

ONE-WAY VALVE
RESERVOIR

ROTORS
Relief Valve (In Power Steering Speed Sensor)

When the vehicle is moving in reverse, the power steer-

ing speed sensor also turns backward and pumps fluid

in the opposite direction. To avoid building up pressure

in the reaction chambers that would increase steering

effort while driving in reverse, the inlet and outlet-ports

are connected by a second internal passage containing a

relief valve that allows the fluid to recirculate.

Driving in Reverse:

RESERVOIR

RELIEF VALVEProCarManuals.com

System Description

System Operation (cont'd)

Hydraulic Control at Each Speed Range

When stopped:

When the vehicle is stopped with the engine idling, the fluid flow is shut off because the power steering speed sensor

rotor is not rotating. The standard pressure generated by the pressure control valve is applied to the assist control valve to

move the valve to the left. When the assist control valve is in this position, the orifice valve is closed. Therefore, the fluid

discharged from the pump is fed to the low speed valve of the valve body unit. Because the low speed valve has the small

chamfer and thereby the small opening angle, the large hydraulic pressure (steering rack thrust) results in the smallest

steering force (high assist).

HIGH SPEED FEED PASSAGE

LOW SPEED FEED PASSAGE
ASSIST CONTROL VALVE UNIT

POWER STEERING SPEED

SENSOR SIGNAL PRESSURE

HIGH SPEED

VALVE

SLEEVE

TORSION BAR

INPUT SHAFT

VALVE BODY UNIT

SENSOR ORIFICE

ASSIST VOLUME: LIGHT

STEERING WITH VEHICLE PARKED

ROAD SURFACE RESISTANCE

SMALL
LARGE
FLOW: O (ZERO)

LOW SPEED

VALVE

POWER STEERING SPEED

SENSOR AT A STOP
RESERVOIR
PUMP
FULL CLOSE

PRESSURE CONTROL VALVE
(HIGH)
ASSIST CONTROL

VALVEProCarManuals.com

Middle speed range:

When the vehicle starts to move, the power steering speed sensor rotor starts to rotate as well, reducing the standard

pressure and generating the power steering speed sensor signal pressure. The valve returns to the right point where the

pressure of the power steering speed sensor signal equals the spring force of the assist control valve. When the assist

control valve is in this position, the orifice of the valve slightly opens.

Therefore, the fluid pressure from the pump is applied to the high speed valve of the valve body unit. Because the high

speed valve has a larger chamfer and the compound opening area with the low speed valve is larger than that when the

vehicle is stopped, the fluid pressure (steering rack thrust) is not generated unless the displacement angle is large (large

steering torque), resulting in moderately heavy steering (medium assist).

FLOW: MIDDLE
ASSIST CONTROL VALVE UNIT

POWER STEERING SPEED

SENSOR SIGNAL PRESSURE (MEDIUM)

MIDDLE POWER STEERING SPEED

SENSOR ROTATION SPEED

MODERATELY HEAVY STEERING

IN MIDDLE SPEED RANGE
SMALL
ROAD SURFACE

RESISTANCE LARGE

High speed range:

When the vehicle is driven at high speed, the power steering speed sensor rotor rotates at a high speed, greatly reducing

the standard pressure. The pressure of the power steering speed sensor signal is at the lowest value, and the assist con-

trol valve is at the right end position.

When the assist control valve is in this position, the orifice of the valve opens fully. Therefore, the fluid pressure applied to

the high speed valve is larger than when the engine speed is at the middle speed range. The compound opening area with

the low speed valve is the largest this time, and the fluid pressure (steering rack thrust) is not generated unless the dis-

placement angle is very large (low assist).

FLOW: LARGE
ASSIST CONTROL VALVE UNIT

POWER STEERING SPEED

SENSOR SIGNAL PRESSURE (LOW)

HIGH POWER STEERING SPEED

SENSOR ROTATION SPEED

LOW ASSIST: ADEQUATELY HEAVY

STEERING IN HIGH SPEED RANGE
SMALL
-ROAD SURFACE

RESISTANCE LARGE
PRESSURE CONTROL VALVE

SENSOR ORIFICE
HALF OPEN
ASSIST CONTROL

VALVE

VALVE BODY UNIT

ASSIST CONTROL

VALVE

FULL OPEN

SENSOR ORIFICE
PRESSURE CONTROL VALVEProCarManuals.com