Balance bar adjustment, Ports, Cutoff port travel – Tilton Floor-Mount (98-1207) User Manual

Page 3

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2.225

MOUNTING BOLT PATTERN

INTERCHANGABLE WITH

72-680 PEDAL ASSEMBLY

CUSTOMER SUPPLIES

5/16" OR 8MM

SOCKET HEAD BOLTS

MASTER CYLINDER
SPHERICAL BEARINGS
POSITIVELY RETAINED
WITH CIRCLIPS

SEALED BALL BEARINGS

ON ALL PEDAL PIVOTS

.90

6.150

11.0

+.0

-.75

ALL 3 PEDALS, .580 TOTAL

3.2

ADJUSTABLE CLUTCH

PEDAL STOP

7.9 ±1.5 ADJUSTABLE PEDAL POSITION

THROTTLE

9.6 ±1.5 ADJUSTABLE PEDAL POSITION

CLUTCH AND BRAKE

-3 AN FEMALE OUTLET PORT

-4 AN MALE INLET FITTING
(TILTON ENGINEERING P/N 77-015)

ADJUSTABLE
TOE CLIP POSITIONING

2.60

8.2

THROTTLE

RETURN

SPRING

BRAKE RETURN SPRING FOR
RAPID RETURN OF BRAKE PEDAL.

-4 AN MALE INLET BANJO

FITTING: GOODRIDGE P/N 776-04-M14

BANJO BOLT: GOODRIDGE P/N 775-06

CRUSH WASHER (2 REQUIRED): GOODRIDGE P/N CW901-6

AVAILABLE FROM ANY GOODRIDGE DEALER

BLUEPRINTED MASTER CYLINDER CUT-OFF PORT
TRAVEL CUTOFF PORT DISTANCE MAY BE ALTERED
FOR INCREASED/DECREASED PEDAL FREE PLAY
USING VARIABLE THICKNESS SHIMS AVAILABLE
SEPERATELY.

JAM NUT SECURES BIAS BAR SETTING. FOR
REMOTE CABLE ADJUSTER, REMOVE JAM NUT AND
SECURE CABLE DIRECTLY INTO END OF BIAS BAR
WITH PROVIDED SET SCREW.

INLET FITTINGS ARE NOT INCLUDED WITH MASTER

CYLINDERS. SUITABLE FITTINGS FOR YOUR PARTICULAR

INSTALLATION MUST BE PURCHASED SEPARATELY.

NEEDLE BEARINGS ON ALL BIAS BAR PIVOTS

LONG CLEVIS FOR LONGER STROKE FRONT MASTER

CYLINDER AT REST, LONG CLEVIS ROTATES BIAS BAR AS

SHOWN. THIS ALLOWS BIAS BAR TO RUN SQUARE

UNDER BRAKING

BIAS BAR DATA:

9 TURNS OF TOTAL ADJUSTMENT

FRONT TO REAR BIAS FROM 59/41% TO 41/59%

1 TURN - 1.9% CHANGE

balance bar aDjustMent

Fixed position
If a remote adjuster will not be used remove the set screw in the right end of the balance
bar and snug the balance bar locking nut up against the right clevis pivot.
Only one locking nut is required.

Remote Cable Adjuster
The right end of the balance bar has been drilled to accept the remote adjuster cable
directly. No coupler is required. Slip the end of the cable into the end of the balance bar
and tighten the setscrew.

Right Angle Adjuster
To solve cable routing problems use right angle adjuster part number 72-561. This is a
small protected bevel gear drive unit that will allow the cable to approach the balance
bar at a 90 degree angle.

ports

Inlet:
–6AN, crush washer seal. Connection fittings (-6AN crush washer to -4AN male taper)
are sold spearately, avilable from Tilton (P/N 77-015). Comparable Goodridge fittings are
acceptable as well.

Outlet:
–3AN, crush washer or tapered seat seal.

cutoff port travel

As delivered, the Tilton 77 Series master cylinder has been blueprinted for a cutoff port
travel distance within the range of .030" to .050". This can by altered by changing the
thickness of the sealing ring located between the master cylinder body and the end cap
(visible from outside). Increasing the thickness of this seal increases the cutoff port travel
an equal amount. Reducing the thickness reduces it by an equal amount. Seal kits of
varying thicknesses are available from Tilton. It is recommended not to reuse the shims
since work hardening of the shim material can prevent proper sealing in the future.

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