Paragraph 124
CASE/INTERNATIONAL
to a torque of 115-130 ft.-lbs. (156-176 N-m). Check
condition of piston, brake disc and brake rings and
renew as necessary.
When reassembling, install new
'*0*'
ring on brake
piston and lubricate
**0*'
ring with petroleum jelly.
Install piston in rear frame, being careful not to dam-
age the ''0'* ring.
Reassemble by reversing the disassembly proce-
dure.
When assembly is complete, check pedal free
height and adjust as outlined in paragraph
121,
then
start engine and bleed brakes as in paragraph 122.
BRAKE MASTER CYLINDERS
All Models
124.
R&R AND OVERHAUL. Tb remove brake
master cylinders, remove hood and rear side panels.
On models equipped with cab, remove battery cables,
remove instrument panel front cover and raise instru-
ment panel as necessary. On models without cab, dis-
connect battery cables and remove battery. On all
models, loosen hose clamps and remove brake reser-
voir. Remove equalizer pipe from master cylinders,
then remove the outlet tubes from master cylinders.
On models not equipped with cab, remove locknuts
and eccentric pivot bolts (Fig. 141). On models with
cab,
loosen clevis locknuts and remove clevis pins
(Fig. 142). On all models, unbolt and remove master
cylinders.
Ib disassemble master cylinders, first remove cle-
vis and locknut from push rod on models with cab.
Then, on all models, remove boot (13—Fig. 145). Re-
move snap ring (15) and push rod (14 or 16). Remove
gland seal (12), piston
(11),
spring (10) with retainer,
wave washer
(9),
valve stem (8) and seal
(7).
Unscrew
connector
(1)
with seal ring
(2),
then remove equaliz-
er flow valve (3), seal (4) and ball (5).
Clean and inspect all parts and renew complete
master cylinder if piston
(11)
or body (6) is excessively
worn or badly scored. A service seal kit is available
for the master cylinder. The kit consists of seal ring
(2),
seal (4), ball (5), seal (7), wave washer
(9),
gland
seal (12) and snap ring
(15).
Reassemble by reversing
disassembly procedure.
Reinstall master cylinders by reversing removal
procedure. Adjust pedal height as outlined in para-
graph
121
and bleed air from brake system as in para-
graph 122.
POWER TAKE OFF
The power take off used on all models is an in-
dependent type. The pto is available as a single
speed (540 rpm) unit on Models 385 and 485 or
as a dual speed (540 and 1000 rpm) unit on Models
585,
685 and 885. Oil for the pto unit on all models
Fig. 144—Use special tool IH7847A and slide hammer to
remove brake piston.
Fig.
145—Exploded view
of a
brake master
cylinder.
Other
master cylinder Is Identical. Push rod (14) Is used on
models without cab and push rod (16) Is used on models
with cab.
1.
Connector
2.
Seal ring 9. Wave washer
3.
Equalizer flow 10, Spring
valve 11. Piston
4.
Seal 12.
5.
Ball 13.
6. Body 14.
7.
Seal 15.
8. Valve stem
Gland seal
Boot
Push rod
Snap ring
16.
rush rod
82
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