Instruction Manual

ManualsBrandsTilton ManualsCar77-Series (98-1234)

Description

The TB&C 77-Series master cylinders oer the latest in racing master cylinder technol-

ogy in very lightweight and compact design. The rear spherical bearing mount and

one-piece piston/pushrod eliminate side thrust into the master cylinder bore, providing

consistent and repeatable braking. 77-Series master cylinders are designed specically

for use with 900-Series pedal assemblies or balance bar P/N 72-280.

Master cylinDer Fittings

The inlet port is a 9/16-18 Thread (–6AN) designed for a crush washer seal. Use Tilton P/N

77-015 to adapt to a –4AN straight Male tapered seat tting. Alternately, you may use a

banjo bolt and swivel tting by ordering Goodridge P/N 776-04-M14 (Fitting), 77S-06

(Banjo bolt), and two CW901-6 (crush washers). If you choose alternate ttings, the maxi-

mum thread engagement into the master cylinder is .375".

Note: –4 inlet hose should be used to ensure adequate uid ow.

Note: The outlet port is -3AN Female tapered seat.

altering cutoFF port travel

As delivered, the Tilton 77-Series master cylinder has been blueprinted for a cuto port

travel within the range of .030" to .050". The cuto port travel is set by the thickness of

the large copper crush washer between the master cylinder body and the hex end cap

(visible from the outside). The actual cuto port travel and the thickness of the crush

washer is noted on a label on the bottom of each individual master cylinder.

You may alter the master cylinder cuto port travel by changing the thickness of the

crush washer. Increasing crush washer thickness increases the cuto port travel an

equal amount. Reducing the crush washer thickness reduces cuto port travel an equal

amount. Five dierent thickness crush washers in .010" increments are available from Til-

ton. Use the table to choose the appropriate shim for the master cylinder bore diameter.

Shim

Thickness

SHIM P/N FOR MASTER CYLINDER SIZE

5/8", 7/10",

3/4" Bore

13/16", 7/8"

Bore

15/16",1"

Bore

.020 in 77-412-20 77-414-20 77-416-20

.030 in 77-412-30 77- 414-30 77-416-30

.040 in 77-412-40 77-414-40 77-416-40

.050 in 77- 412-50 77-414 -50 77-416-50

.060 in 77-412- 60 77-414- 60 77-416-60

77 Series Master Cylinders

INSTALLATION INSTRUCTIONS

98-1 234

3/8-24 UNF

2.84

2.82

1.81 (1 BORE)

1.57 (5/8 BORE)

1.20

O .312

AN-3 FEMALE

AN-6 FEMALE

Summary of content (2 pages)

PAGE 1
98-1234 INSTALLATION INSTRUCTIONS 77 Series Master Cylinders Description The TB&C 77-Series master cylinders offer the latest in racing master cylinder technology in very lightweight and compact design. The rear spherical bearing mount and one-piece piston/pushrod eliminate side thrust into the master cylinder bore, providing consistent and repeatable braking. 77-Series master cylinders are designed specifically for use with 900-Series pedal assemblies or balance bar P/N 72-280.
PAGE 2
How to Change the Crush Washer Figure 1 NOTE: During this procedure, it is EXTREMELY important to keep the piston shaft installed in the hex end cap. If you remove the piston shaft from the hex end cap, the threads of the shaft will damage the factory installed external seal and you will have to send the assembly to Tilton for rebuilding . 1. In a vice with aluminum soft jaws, firmly clamp the parallel flat sides of the master cylinder body around the spherical bearing. 2.