Power Rack & Pinion Acura Integra III

DESCRIPTION

The power steering system is rack and pinion type. Power assist is high at low vehicle speeds and low at high vehicle speeds. The speed sensor is a pump driven by a speedometer gear shaft, driven by a gear in the differential. When vehicle is in motion, the speed sensor pump relieves a portion of the hydraulic pressure, reducing power assist. On all models, system consists of a power rack and pinion steering gear, steering pump, fluid filter/reservoir, and cooler lines and hoses.

PUMP PRESSURE CHECK

1. Check fluid level and belt tension. Adjust as necessary. Disconnect outlet hose from pump. Install Pump Joint Adapter (07NAK-SR3011A on Integra, 07QAK-POA0110 on 2.3CL, 07GAK-SE00112 on 3.5RL) onto pump outlet fitting. (Scheme 1) On 3.0CL, install Pump Joint Adapter (07VAK-P8A011A) with Adapter Plate (07VAK-P8A012A) onto pump outlet fitting.
2. Install Hose Joint Adapter (07NAK-SSR3012A on Integra, 07QAK-POA0120 on 2.3CL, 07RAK-SO40121 on 3.0CL, 07GAK-SE00120 on 3.5RL & 3.2TL, or 07QAK-PV30120 on 2.5TL) onto outlet hose. Install Pressure Gauge Set (07406-0010001) between pump and hose joint adapters. Fully open shutoff and pressure control valves.
3. Start and idle engine. Turn steering wheel lock to lock several times to warm fluid. Completely close shutoff valve.
4. Gradually close pressure control valve until pressure gauge needle stabilizes. Read pressure. Immediately open shutoff valve. Pump pressure should be at least 924psi (65kg/cm 2 ) for Integra and 2.3CL, 1090 psi (76.5 kg/cm 2 ) for 3.0CL, or 1140 psi (80 kg/cm 2 ) for 3.5RL. Repair or replace pump if pressure is not within specification.

Scheme 1

Low-Speed Assist

1. Check fluid level and belt tension. Start and idle engine. Turn steering wheel lock to lock several times to warm fluid. Attach a spring tension scale to steering wheel at outer end of spoke.
2. Ensure vehicle is on a clean, dry surface. With engine at idle, pull tension scale. Read scale as soon as wheels begin to move. Reading should be a maximum of 7.7 lbs. (3.5 kg) for Integra, 6.6 lbs. (3.0 kg) for 2.3CL and 3.0CL, and 5.7 lbs. (2.6 kg) for 3.5RL.
3. If reading does not meet specification, stop engine and disconnect hose between control unit and speed sensor at sensor. Plug hose and sensor fitting.
4. Start and idle engine. Measure pull as described in steps 1) and 2). If scale reading is less than previously specified, replace speed sensor. If scale reading is higher, check steering rack and power steering pump.

Simulated High-Speed Assist (3.5RL)

1. Check fluid level and belt tension. Start and idle engine. Turn steering wheel lock to lock several times to warm fluid. Stop engine. To simulate speeds greater than 30 MPH, disconnect hoses at speed sensor and connect By-Pass Tube Connector (07406-0010101) to speed sensor hoses.
2. Attach spring tension scale to outer end of steering wheel spoke. With vehicle on clean, dry floor, start and idle engine. Pull on tension scale until wheels begin to move.
3. If turning force is less than 5.7 lbs. (2.6 kg), speed sensor is okay. Check for pinched or bent sensor feed. If feed line is okay, problem is in pump or control unit. If turning force is more than specified, replace faulty speed sensor.

CAPACITY

SYSTEM CAPACITY

FLUID TYPE

FLUID & OIL RESERVOIR/FILTER REPLACEMENT, SYSTEM BLEEDING &

FLUID LEVEL CHECK

Note. Replace fluid reservoir/filter when system is repaired or if fluid is contaminated.

1. Disconnect return hose from steering gear at reservoir. Place end of hose in container. Start and idle engine. Turn steering wheel lock to lock several times until fluid flow stops. Shut off engine.
2. Drain fluid, and replace reservoir/filter if necessary. Replace return hose at reservoir. Fill reservoir to upper level mark. Start and run engine at fast idle. Turn steering wheel lock to lock several times to bleed trapped air. Recheck fluid level in reservoir.

BELT TENSION

BELT ADJUSTMENT SPECIFICATIONS

RACK GUIDE

1. Using Lock Nut Wrench (07916-SA50001), loosen rack guide screw lock nut. (Scheme 2)or (Scheme 3). Tighten rack guide screw until spring is compressed against guide.
2. Loosen rack guide screw, and retighten it to 36 INCH lbs. (4 N.m). Back off rack guide screw 10-20 degrees for Integra and 3.5RL, or 15-25 degrees for 2.3CL and 3.0CL. Holding rack guide screw in place, tighten lock nut to 18 ft. lbs. (24 N.m). Measure steering effort. See «STEERING WHEEL TURNING FORCE»(/acura/integra/iii-1993-2001/remont/manual-power-steering/#power-rack-pinion) under TESTING.

Scheme 2

Scheme 3

Removal (Integra, 2.3CL & 3.0CL)

1. Remove steering joint cover. Remove steering shaft joint pinch bolt. Disconnect steering shaft from steering gear. Drain power steering fluid. Remove steering gear shield.
2. Thoroughly clean area around valve body. Raise and support front of vehicle. Remove front wheels. Separate tie rod ends from steering knuckles. On M/T models, remove shift rod from transaxle case. Slide shift retaining pin cover back away from transaxle. Using a drift, drive shift rod retaining pin from shift rod. Disconnect shift rod from transaxle.
3. On A/T models, remove shift cable holder and cable clamp. Remove shift cable from transaxle.
4. On all models, remove exhaust pipe between exhaust header pipe and converter. Remove steering fluid tubes from valve body. Plug fluid connections.
5. Remove steering gear mounting bolts. Slide assembly to right until left tie rod clears frame. Lower steering gear, and remove it through left side.

Installation (Integra, 2.3CL & 3.0CL)

To install, reverse removal procedure. Tighten steering gear mounting bolts to specification. See TORQUE SPECIFICATIONS . Use NEW self-locking nuts on exhaust pipe bolts. Use new exhaust gaskets. Fill reservoir with power steering fluid, and check for leaks.

Removal (3.5RL)

1. Ensure wheels are pointing straight-ahead. Disconnect battery cables. Drain power steering fluid. Raise and support front of vehicle. Remove front wheels. Separate tie rod ends from steering knuckles.
2. Loosen steering shaft joint pinch bolt and remove. Disconnect steering shaft from steering gear. Remove engine splash guard. Thoroughly clean area around valve body and lines. Remove hose clamp from right side of steering gear. Disconnect lines from valve body. Remove hydraulic line clamps. Disconnect speed sensor line. Plug all hydraulic lines to exclude foreign matter.
3. Remove steering gear mounting bolts and steering gear.

Installation (3.5RL)

To install, reverse removal procedure. Fill reservoir with power steering fluid, and check for leaks. Tighten steering gear mounting bolts to specification. See TORQUE SPECIFICATIONS .

Removal & Installation

Drain fluid. On 3.5RL, remove air cleaner cover and duct. On all models, remove power steering belt. Disconnect inlet and outlet hoses at pump. Remove pump retaining bolts. Remove pump. To install, reverse removal procedure. Adjust belt tension. Fill reservoir with new fluid. Check for leaks.

Disconnect VSS connector from power steering speed sensor. Remove speed sensor mounting bolt and speed sensor. Disconnect sensor inlet and outlet hoses and plug fittings.

Install in reverse of removal. After replacing sensor, turn steering wheel lock to lock several times with engine idling to bleed air from system. Check power steering fluid, and top off if necessary. Check for leaks.

Drain power steering fluid.Remove steering gear. See POWER RACK & PINION under REMOVAL & INSTALLATION. Disconnect fluid lines from valve body, and remove flange bolts. (Scheme 4)or (Scheme 5). Remove valve body from gear box. To install, reverse removal procedure. Check for leaks.

Scheme 4

Scheme 5

Scheme 6

1. Remove air hose. Remove tie-rod end, lock nut and boot. On 2.3CL and 3.0CL, unbend lock washer and remove steering rack end, lock washer and stop washer. On other models, remove steering rack end and lock washer. (Scheme 6)
2. Remove lock nut, rack guide screw, "O" ring, spring and rack guide. Disconnect cylinder lines "A" and "B" from gearbox and from valve body. (Scheme 2)or (Scheme 3). Move steering rack back and forth to drain fluid from cylinder fittings.
3. Remove valve body from gearbox. (Scheme 4)or (Scheme 5). Using a 1/8" (3 mm) drill, drill out staked point to 0.10-0.14" (2.5-3.5 mm) depth on cylinder end. DO NOT allow metal shavings to enter cylinder housing.
4. Install a puller yoke to steering gearbox. Clamp puller in a soft-jawed vise. Loosen and remove cylinder end nut. Set gearbox facing upward on press.
5. On Integra, 2.3CL and 3.0CL, assemble a 12 x170 mm flange bolt with a nut installed on bolt. Install flange bolt into the end of steering rack until it threads into rack hole. Back out flange bolt about 1/4 turn and tighten flange nut against rack by hand.
6. On 3.5RL, assemble 3/8" x6" drive extension and Cylinder End Seal Remover (07NAD-SR3020A).
7. Press cylinder end seal and steering rack out of gearbox. Remove flange bolt or end seal remover from steering rack. Install a 3/8" x24" drive extension and cylinder end seal remover into cylinder from gear box side. Press out cylinder end seal and backup ring from gearbox. Remove rubber stop from gearbox on 3.5RL only. Remove piston seal ring and "O" ring from rack piston.

Reassembly

1. On 3.5RL only, use Driver (07749-0010000) and Attachment (07746-0010100) to press rubber stop into gearbox.
2. For all models, coat Pistion Seal Ring Guide (07GAG-SD40100 on Integra, 07HAG-SF1010A on 2.3CL, 3.0CL, or 07LAG-SM4010A on 3.5RL) with power steering fluid, and slide it onto rack, big end first. Position NEW "O" ring and piston seal ring on seal ring guide big end. Push NEW seal into piston seal ring guide groove so it sits on top of "O" ring.
3. Coat piston seal ring and Piston Seal Ring Sizer (07GAG-SD40200 on Integra, 07HAG-SF1020A on 2.3CL, 3.0CL, or 07LAG-SM4020A on 3.5RL) with power steering fluid. Slide ring sizer onto rack and over piston seal ring. Rotate ring sizer while moving it up and down to seat piston seal ring. Coat sliding surface of Cylinder End Seal Slider (07974-689080A) and cylinder end seal with power steering fluid. Position seal on slider with grooved side facing out.
4. Grease sliding surface of steering rack. Install cylinder end seal on steering rack with grooved side facing piston. Remove seal slider from steering rack. Install backup ring on steering rack, behind cylinder end seal. Grease steering rack teeth, then insert steering rack into gear housing. (Scheme 2)or (Scheme 3).
5. Position gear box in press facing upwards. Install flange bolt (Integra, 2.3CL and 3.0CL) or 3/8" x6" drive extension with Cylinder End Seal Attachment (07NAD-SR3020A for 3.5RL) on end of steering rack. Install cylinder end seal into bottom of cylinder by using press. DO NOT push on bolt or drive extension with excessive force, as it may damage cylinder end seal.
6. Remove flange bolt or drive extension and center steering rack. Install vinyl tape or Cylinder End Seal Guide (07GAG-SD40400) onto end of steering rack. Coat guide or vinyl tape and new cylinder end seal with power steering fluid. Install cylinder end seal onto steering rack with grooved end facing piston.
7. Install Puller Yoke (CJ123-1) to steering gearbox, then clamp puller yoke to a soft-jawed vise. Grease inside surface of cylinder end, then install cylinder end by screwing it into cylinder housing. Remove puller yoke. Stake the end of cylinder housing after tightening cylinder end nut. Reinstall valve body assembly to steering gear.
8. Fill pump reservoir with Honda power steering fluid. Start and run engine at fast idle. Rotate steering wheel lock to lock several times to bleed air from system. Add fluid as necessary. Check for leaks.

Disassembly (Integra & 3.5RL)

1. Remove power steering pump from vehicle. See «POWER STEERING PUMP»(/acura/integra/iii-1993-2001/remont/manual-power-steering/#power-rack-pinion) under REMOVAL & INSTALLATION. Using Universal Holder (07725-0030000) to hold pump pulley, remove pulley bolt. Pulley bolt has left-hand threads. Remove pump pulley. Remove control valve cap, control valve and spring. Remove "O" ring from control valve. (Scheme 7)
2. Remove inlet joint and "O" ring. Remove pump cover and cover seal. Remove outer side plate, pump cam ring, rotor, vanes, side plate and "O" rings. Remove circlip from drive shaft. Using a plastic mallet, remove drive shaft assembly with bearing from pump housing. Remove pump seal spacer and pump seal.

Disassembly (2.3CL & 3.0CL)

1. Remove power steering pump from vehicle. See «POWER STEERING PUMP»(/acura/integra/iii-1993-2001/remont/manual-power-steering/#power-rack-pinion) under REMOVAL & INSTALLATION. Using Universal Holder (07725-0030000) to hold pump pulley, remove pulley bolt. Pulley bolt has left-hand threads. Remove pump pulley and pump front cover. Remove control valve and spring. Remove "O" ring from control valve. (Scheme 8)
2. Remove snap ring and sub-valve from outlet port. Remove inlet joint and "O" ring. Remove pump cam ring, rotor, vanes, side plate and preload spring. Remove "O" rings from side plate. Remove circlip from drive shaft. Using a plastic mallet, remove drive shaft assembly with bearing from pump housing. Remove pump seal spacer and oil seal.

Scheme 7

Scheme 8

Reassembly (Integra & 3.5RL)

1. Inspect pump bearing for excessive play. Replace bearing if it is defective. Use Bearing Assembly Base (07GAF-SD40700) and a press to install new bearing with shielded side facing down. Coat new pump seal with Power Steering Grease (08733-B070E). Using hand pressure, install pump seal. Install pump seal spacer and pump drive shaft.
2. Install drive shaft circlip. Lubricate pump cover and new cover seal and install seal. Install outer side plate over rollers. Install cam ring over rollers with "o" mark facing down. Install rotor and vanes. Rounded ends of vanes face toward cam ring.
3. Coat "O" ring with power steering fluid and install in side plate. Install side plate with rollers in roller set holes. To complete reassembly, reverse disassembly procedure. Ensure pump turns smoothly when rotating pump pulley.

Reassembly (2.3CL & 3.0CL)

1. Inspect pump bearing for excessive play. Replace bearing if it is defective. Use Bearing Assembly Base (07GAF-SD40700) and a press to install new bearing with shielded side facing down. Coat new oil seal with Power Steering Grease (08733-B070E). Using hand pressure, install oil seal. Install pump seal spacer and pump drive shaft.
2. Install drive shaft circlip. Lubricate and install new "O" rings onto side plate. Install preload spring into pump housing. Install one roller into hole in pump housing. Align hole in side plate with roller, and install side plate. Install remaining roller into side plate.
3. Install pump rotor onto drive shaft with "o" mark on rotor facing upward. Install vanes into rotor grooves. Install pump cam ring over rollers with "oo" mark on cam ring facing upward. Rounded ends of vanes face toward cam ring. To complete reassembly, reverse disassembly procedure. Ensure pump turns smoothly when rotating pump pulley.

Disassembly & Reassembly

1. Remove valve body flange bolts. (Scheme 4)or (Scheme 5). Remove valve body from gear box. Wrap pinion shaft with vinyl tape. Press out pinion shaft from valve housing. Check valve housing inner wall for ridges. Replace valve housing if ridges are present.
2. If valve housing is replaced, install NEW 44-mm shim(s) on bearing surface of housing to adjust thickness. Check for signs of wear, burr or other damage to edges of sleeve groove. If necessary, replace both pinion shaft and sleeve as a set.
3. Remove pinion shaft sleeve from pinion shaft. Remove seal rings and "O" rings from sleeve. Press out oil seal and bearing from valve body. Inspect all parts for wear or damage. Always replace "O" rings and seals before assembly. To reassemble, reverse disassembly procedure. Coat all parts with Power Steering Grease (08733-B070E) before reassembly.

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

See also:
• STEERING WHEEL TURNING FORCE
• TORQUE SPECIFICATIONS