Steering System - Power Mazda MPV V

DESCRIPTION

Steering system is a power-assisted rack and pinion. The system consists of a rack and pinion steering gear and power assist pump/reservoir. The steering gear and pump/reservoir are connected by flexible hoses.

Pump Fluid Pressure Test

1. Disconnect pressure hose and connect pressure gauge/valve between steering pump and steering gear. (Scheme 1) Bleed any air from system. Open valve fully. Start engine and idle. NOTE: Place gauge set valve on gear housing side.
2. Turn steering wheel lock-to-lock to increase fluid temperature to 122-140°F (50-60°C). To measure pump fluid pressure, completely close gauge valve for 15 seconds and increase engine speed to 1000-1500 RPM. See «HYDRAULIC SYSTEM FLUID PRESSURE SPECIFICATIONS»(/mazda/mpv/v-1986-1991/remont/manual-power-steering/#steering-system-power). If pump pressure is not to specification, pump overhaul/replacement is necessary.

Gear Fluid Pressure Test

1. Ensure pump pressure is within specification. To measure steering gear fluid pressure, open gauge/valve completely.
2. Increase engine speed to 1000-1500 RPM. Turn steering wheel from lock-to-lock. See «HYDRAULIC SYSTEM FLUID PRESSURE SPECIFICATIONS»(/mazda/mpv/v-1986-1991/remont/manual-power-steering/#steering-system-power) . If steering gear fluid pressure is less than specification, steering gear is defective.

HYDRAULIC SYSTEM FLUID PRESSURE SPECIFICATIONS (1)

Scheme 1

CAPACITY

See POWER STEERING FLUID CAPACITY .

POWER STEERING FLUID CAPACITY

FLUID TYPE

Dexron-II is recommended for all vehicles.

FLUID LEVEL CHECK

Fluid level should be checked before engine is started with fluid still cool. Remove fluid level gauge on oil pump or reservoir. Check fluid level. Fluid should be between "L" and "H" marks on level gauge dipstick. If fluid is needed, fill through gauge tube. Recheck fluid level. DO NOT overfill.

HYDRAULIC FLUID BLEEDING

1. Raise and support front of vehicle. With ignition off, turn steering wheel completely lock-to-lock several times. Add fluid as required. Repeat this procedure until fluid level no longer decreases.
2. Start engine and let idle. Turn steering wheel completely lock-to-lock five times. Check fluid level. Add fluid as necessary. Continue this procedure until fluid is clear and does not decrease in level.

ADJUSTMENTS

Note. Any adjustments are made during the reassembly procedure. Procedure not available from manufacturer.

POWER STEERING BELT ADJUSTMENT

See POWER STEERING BELT DEFLECTION .

POWER STEERING BELT DEFLECTION (1)

Removal & Installation

1. Disconnect negative battery cable. Raise and support front of vehicle. Remove front wheels. Remove cotter pins and castle nuts from tie rod ends. Remove tie rods from steering knuckles with suitable puller.
2. Remove steering column intermediate shaft-to-steering gear pinion shaft bolt. Mark reference lines on pressure pipe fittings. Remove pressure and return hose connections from steering gear.
3. Remove 2 steering bracket-to-frame mounting through bolts. Remove steering gear and linkage with steering bracket from under the vehicle.
4. To install, reverse removal procedure. Fill and bleed system. Tighten bolts to specification. Tighten 4 steering gear-to-mounting bracket bolts in order: left front, right front, left rear, right rear.

Removal

1. Raise and support front of vehicle. Remove belt, alternator and hydraulic lines from pump.
2. Cap lines to prevent contamination. Remove bracket-to-pump bolts.

Installation

To install, reverse removal procedure. Adjust belt tension. See POWER STEERING BELT DEFLECTION . Bleed air from system. Check for leaks.

Disassembly & Reassembly

Procedure not available from manufacturer.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

See also:
• HYDRAULIC SYSTEM FLUID PRESSURE SPECIFICATIONS