LARES INSTRUCTION BOOKLET
Do Not Add Grease
All manual steering gears, power steering control valves, power steering cylinders, power steering gears with manual sections (Offset Saginaw, Co-axial, Hydraguide, Rotary valve) have been properly lubricated at our factory. Do not add grease.
Manual Steering Gears
Your steering gear has been centered to the optimal position at our factory. A yellow alignment mark has been drawn on the sector shaft and the case. It is important that these marks line up or you will have excessive play. Adjust your steering wheel and/or pitman arm and tie rod ends as necessary so the marks line up.
If you sent in your steering column, the upper column bushing has been replaced. New configuration with Long Life Nylon bushing. Spring & retaining ring are no longer required.
Important Return Instructions
- Assure core is drained of fluid.
- Reinstall plugs in core so it does not leak.
- Use return bag included in box to wrap the core before shipping to keep it dry.
- Reinstall core in original packing material.
- Make sure the return box is taped and secured properly.
- If you have questions, call Lares Corporation at 800-555-0638.
Important Instructions - Please Read.
Flushing and Bleeding Instructions
- Disable ignition system using recommended procedure in your service manual.
- Raise front wheels until just clear of ground.
- Place drain pan under power steering pump return port. Disconnect return line from power steering pump and place it in drain pan. Flush the power steering pump reservoir by pouring new fluid into the reservoir until the fluid runs clear. Be sure to use the fluid recommended for your vehicle. NOTE: DIRTY FLUID WILL VOID THE WARRANTY.
- Leave return line in drain pan. Cap the pump reservoir return port to prevent leakage.
- Fill power steering pump with new fluid recommended for your vehicle
- While having someone watch the fluid level and adding fluid to the pump (Keep fluid above top of pump casting) crank the engine over using the ignition switch. (To prevent excessive starter wear; crank engine over for less than 20 second intervals.) Continue to add new fluid until return line runs clear. Reconnect pump return line.
- This completes the flushing procedure. Now begin bleeding the system.
- Fill power steering pump with new fluid recommended for your vehicle.
- While having someone watch the fluid level and adding fluid to the pump (Keep fluid above top of pump casting) crank the engine over using the ignition switch. (To prevent excessive starter wear; crank engine over for less than 20 second intervals.)
- While you are cranking the engine over, turn the steering wheel lock to lock slowly at least 4 times to bleed the system. If you see any bubbles and/or foam enter the pump; stop and let the system rest until all of the bubbles and/or foam has dissipated. Repeat steps 8-10 until bubbles and/or foam no longer enter the pump.
- Reconnect ignition system. Lower wheels to the ground. Start engine and test drive car. If assist is smooth, bleeding is complete. If assist is erratic, whines or fluid is foaming; repeat steps 8-10.
- Drain core and using plugs provided, return core in original packaging and box.
Power Steering Pump Installation
- Use a suitable puller to remove a pressed on pulley from the pump. DO NOT hammer the pulley to free it from the shaft.
- Install brackets, hoses and other parts on replacement pump.
- Use enclosed installation kit to install pulley. Use of any other tool will void the warranty.
- Tighten hex nut until pulley is flush with the shaft. Put pressure and return lines in a drain pan and using fluid approved for your car, fill reservoir flushing both lines until fluid runs clear.
- Install pump and tighten belt to correct tension.
- Bleed system (see page 1).
- If you have questions, call our tech line at 1-800-555-0638
Changing the Pump Reservoir
- If the replacement pump was supplied without the reservoir, remove and save all bolts and nuts. Then remove pressure fitting.
- Using a wooden block, carefully tap around the edges of the reservoir until it separates from the pump.
- Clean the reservoir thoroughly.
- Change all O-rings. Install new O-rings using a small amount of grease. Make sure the new O-rings are the same size as the old ones.
- Remove pressure fitting from new pump being careful not to let the flow control valve and spring to fall out.
- Line reservoir up with mounting holes and install bolts and pressure fitting finger tight.
- Press reservoir down until it seats on the pump. Tighten bolts and pressure fitting to correct torque specification.
- Install pulley using enclosed installation tool.
Auto Poppet Adjustment for TAS, THP, Sheppard M-Series w/Auto Poppets (Part Number Ending in 3) and ZF Series Steering Gear
This remanufactured steering gear has had the poppet valves reset. DO NOT turn the steering gear more than 1-1/2 turns right or left of venter until step one is completed.
- The axle stops and all steering linkage must be set according to vehicle manufacturer's specifications, and the pitman arm must be correctly aligned on the sector shaft and draglink installed for poppets to be set correctly.
- Raise front end so tires are just off the ground. Make sure pump reservoir is full of fluid.
- With the engine at idle, turn the steering wheel to full travel in one direction until axle stop contact is made. Pull steering wheel to the stop hard. Maximum input torque applied during this procedure is 40 lb. rim pull on a 20 in. diameter steering wheel.
- Follow the same procedure while turning the steering wheel in the other direction. The poppets are now positioned to trip and reduce pressure as the steered wheels approach the axle stops in either direction.
Manual Relief Valve Poppet Adjustment for HF, HFB, Sheppard 292, 392, 492, 592, M-Series with Manual Poppets
Should you need to adjust MANUAL relief valve plungers, use the following procedures:
- Allow engine to operate at idle speed. With full weight of vehicle on all wheels, turn steering wheel in one direction until a high pressure hiss is heard or axle stops contact. Return tires to straight ahead position.
- Turn relief valve plunger in or out until the high pressure hiss is heard when there is 1/8" to 3/16" clearance between axel stops. Do not adjust plunger with pressure on the steering wheel. Seal damage can result.
- Repeat this procedure for the opposite direction of steer.
- Turning plunger in will increase space between axle stops. Turning plunger out will decrease clearance between axle stops. Do not turn slotted plunger out beyond flush with plunger boss or a leak will occur.
- After relief valve plunger adjustment, always check that wheels and tires have adequate clearance between suspension, brake and frame components.
Chevrolet Power Steering Control Valve
This control valve has been tested and balanced in our factory. However, if hard steering in one direction or steering turns by itself, the control valve will need to be balanced. With the piston rod disconnected from the frame bracket and the engine running, the piston rod will be fully extended or retracted if the control valve is out of balance. If piston rod remains retracted, turn adjusting nut (located under metal cap) clockwise until rod begins to move out, then turn nut counter-clockwise until rod begins to move in. (If rod remains extended, turn nut counter-clockwise.) Then turn the nut exactly one-half the rotation needed to change direction of the shaft movement. CAUTION: Do not turn nut back and forth more than absolutely necessary to balance the valve. THIS UNIT HAS BEEN PROPERLY LUBRICATED AT OUR FACTORY. DO NOT ADD GREASE.