Tilton Brake Proportioning Valve (98-1261) - Manual (Page 2)

InstallatIon
Select either the frame or bulkhead mounting style and follow the steps below:
Frame mountIng
1. Select a location for frame mounting the proportioning valve that allows
easy access to the adjusting handle/knob.
2. Make sure that the location allows room for the hydraulic lines and access
for servicing.
3. Locate and mark the location of the mounting holes on the frame refer-
ring to Diagram 4.
4. Drill two 9/32" (7mm) diameter holes in the marked locations. Debur both
of the drilled holes.
5. Test fit the valve in the prepared location and select the proper mounting
hardware. Use two 1/4" (6mm)
diameter socket head cap screws with locknuts. The length will be deter-
mined by your application.
6. Select the routing of the hydraulic lines carefully and avoid any heat
sources such as the exhaust pipes and
manifolds.
7. Refer to Diagram 2 and connect the outlet of the master cylinder to the
inlet of the proportioning valve. The outlet of the proportioning valve is
connected to the line leading to the caliper(s).
BulkHead mountIng
1. Select the location for bulkhead mounting the proportioning valve that
allows easy access to the adjusting handle (knob).
2. Make sure that the location allows room for the hydraulic lines and access
for servicing.
3. Locate and mark the location of the mounting hole on the frame referring
to Diagram 1.
4. Cut, drill or punch a 3/4" (19mm) diameter hole in the marked location.
Debur the hole.
5. Refer to Diagram 1 and loosen the B-nut on the valve body and carefully
remove the handle assembly (adjusting knob) from the valve body.
6. Refer to Diagram 1 and loosen and remove the jam nut.
7. Test fit the valve in the prepared location by sliding the valve body
through the hole in the bulkhead.
8. Secure the jam nut and insert the handle assembly (adjusting knob) into
the valve body.
9. Rotate the handle assembly into the desired position (Lever-type). Tighten
the B-nut and verify the location is suitable for ease of adjustment and
servicing. Make sure that the B-nut does not touch the jam nut. Other-
wise, the valve handle may not be held in its proper position in the valve
body.
10. Select the routing of the hydraulic lines carefully and avoid any heat
sources such as the exhaust pipes and manifolds.
11. Refer to Diagram 2 and connect the outlet of the master cylinder to the
inlet of the proportioning valve. The outlet of the proportioning valve is
connected to the line leading to the caliper(s).
Diagram 2 - Flow Diagram
Diagram 4 - Overall Dimensions
(Handle shown in Position 1, referring to Chart 1)
3.98"
(102mm)
.50" (12.8mm)
3.00" (122mm)
1.00"
(25.4mm)
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Diagram 3 - Typical Applications
Diagram 1 - Mounting Diagram
Tilton Engineering, Inc. 25 Easy Street • PO Box 1787 • Buellton, CA 93427 • www.tiltonracing.com
Reduced front
• Rally
• Dirt
• Off road
• Stadium racing
Used when the front tire
needs more adhesion for
steering, as well as in loose
gravel conditions.
Reduced rear
• Road racing
• Street rods
• Trucks
• Oval Track
Used to compensate for fuel
load or weight changes, de-
teriorating rear tire adhesion,
and brake systems with only
one master cylinder
Reduced right front
• Dirt
• Asphalt
Used to decrease out- side
front corner braking, which
increases turn in and reduces
understeer. Used to compen-
sate for track conditions or
deteriorating chassis setup.
Reduced left, no right
front
• Dirt racing
• Midget
• Sprint
Used to decrease in- side
front corner braking, which
decreases turn in and reduces
oversteer. Usually used on the
inside front with twin calipers
on the rear.
Front
Rear
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