Tilton 700-Series Hydraulic Release Bearing (98-1115) - Manual (Page 3)

Bearing
Piston
Main Seal
(Black)
Bearing
Base
Diagram 5
CLUTCH PEDAL STOP
A positive clutch pedal stop must be used to prevent over-stroking the
hydraulic release bearing piston and the clutch. For access reasons, in
many cars it is not easy to determine how far the master cylinder is being
stroked.
The method listed below provides a very effective method for adjusting
the pedal stop:
1. Lift the drive wheels off the ground and support the car on jack
stands.
2. With the engine off, place the gearbox in first gear and have someone
attempt to rotate the drive wheels.
3. Depress the clutch pedal slowly until the clutch disengages and the
drive wheels can be rotated.
4. Adjust pedal stop to allow another 1/4" of pedal travel. This should
provide clean release of the clutch. Do not stroke the pedal any
further than this point throughout this procedure, otherwise you will
over-stroke the clutch.
MAINTENANCE
A few basic procedures will help to ensure that your hydraulic release
assembly will provide a long and dependable life.
1. Spin the bearing race and check how it feels. If it has a higher than
normal resistance or feels rough, replace the bearing.
2. The piston can be removed and replaced without breaking the
hydraulic seal or requiring bleeding. Periodically, remove the piston
and check for any scores in the bore or on the piston surface. Wipe
the piston and orange dust wiper seal before reinstalling. You may
find that the piston is not dry. This could be the rubber grease used
when installing the new seal. Do not mistake this for brake fluid.
3. If the seal needs replacing, order Tilton’s replacement seal kit (P/N
62-905). Instructions and the correct installation grease are included
in the kit. We also recommend the use of a seal installation tool (P/N
96-002) to prevent damaging the seal during installation.
SERVICE INFORMATION
1. Contact Tilton’s Repair Department (805-688-2353) and describe the
problem or the service that is required.
2. If the bearing assembly needs to be sent in, a Returned Merchandise
Authorization (RMA) number is required and will be provided by a
Tilton representative.
3. Write the RMA number on the outside of the package and ship to:
Tilton Engineering
25 Easy Street
Buellton CA 93427 hydraulic seal. Inspect the piston and
hydraulic assembly bore for scratches. To remove the hydraulic seal
from the release bearing assembly block one hydraulic port and
apply 5 PSI of air pressure to the other port. Wear safety glasses and
point the seal exit path away from you! Never try to pry the seal out
of the assembly. Refer to Diagram 7 when installing the new seals and
ensure that the flat side of the main hydraulic seal rides against the
piston. Always use rubber grease, such as Tilton part number RG-17,
when installing the seal. Take care not to damage the seals during
installation.
FI
RE
W
ALL
Adjustable
Pedal stop
Pedal position where
clutch breaks free.
1/4" additional travel
(exaggerated for clarity)
Pedal position where
pedal stop should be set.
Never travel clutch
pedal past this point!
Diagram 4