Important Instructions – Please Read.

Important Instructions – Please Read.
Important Instructions – Please Read.
FLUSHING AND BLEEDING INSTRUCTIONS
1. Disable ignition system using recommended procedure in your service manual.
2. Raise front wheels until just clear of ground.
3. 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.
4. Leave return line in drain pan. Cap the pump reservoir return port to
prevent leakage.
5. Fill power steering pump with new fluid recommended for your vehicle.
6. 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.
7. This completes the flushing procedure. Now begin bleeding the system.
8. Fill power steering pump with new fluid recommended for your vehicle.
9. 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.)
10. 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.
11. 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.
12. Drain core and using plugs provided, return core in original packaging and box.
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POWER STEERING PUMP INSTALLATION
1. Use a suitable puller to remove a pressed on pulley from the pump. DO NOT
hammer the pulley to free it from the shaft.
2. Install brackets, hoses and other parts on replacement pump.
3. Use enclosed installation kit to install pulley. Use of any other tool will void the
warranty.
4. 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.
5. Install pump and tighten belt to correct tension.
6. Bleed system (see page 1).
7. If you have questions, call our tech line at 1-800-555-0638
CHANGING THE PUMP RESERVOIR
1. If the replacement pump was supplied without the reservoir, remove and save all bolts
and nuts. Then remove pressure fitting.
2. Using a wooden block, carefully tap around the edges of the reservoir until it separates
from the pump.
3. Clean the reservoir thoroughly.
4. 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.
5. Remove pressure fitting from new pump being careful not to let the flow control valve
and spring to fall out.
6. Line reservoir up with mounting holes and install bolts and pressure fitting finger
tight.
7. Press reservoir down until it seats on the pump. Tighten bolts and pressure fitting to
correct torque specification.
8. 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 11⁄2 turns right or left of center until step one is completed.
1. 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.
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2. Raise front end so tires are just off the ground. Make sure pump reservoir is full of
fluid.
3. 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.
4. 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:
1. 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.
2. 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.
3. Repeat this procedure for the opposite direction of steer.
4. 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.
5. 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.
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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.
TECH TIPS AT WWW.LARESCORP.COM
For installation questions about our products, check out our Tech Tips at
www.larescorp.com. If you have more questions, call us toll free at
800-555-0638.
MANUAL STEERING GEARS
If you sent in your steering column,
the upper column bushing has
been replaced.
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.
New configuration with Long Life
Nylon bushing. Spring & retaining
ring are no longer required.
IMPORTANT RETURN INSTRUCTIONS
1. Assure core is drained of fluid.
2. Reinstall plugs in core so it does not leak.
3. Use return bag included in box to wrap the core before shipping to
keep it dry.
4. Reinstall core in original packing material.
5. Make sure the return box is taped and secured properly.
6. If you have questions, call Lares Corporation at 800-555-0638.
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