Chevrolet 30 Series 1967 Service Manual page 391

2. Install tapered lock pin (from lower side), lock
washer and nut.
3. Install clutch pedal over pivot pin, then flat washer
and lock ring.
4. Connect pedal pull rod at pedal and at cross-shaft.
5. Install upper pedal arm into lower arm and install
washer and nut.
. Adjust pedal height and free travel as previously
6
outlined.
TILT CAB CLUTCH PEDAL LINKAGE (Fig. 10)
Removal
1. Tilt cab forward and block in place.
2. Remove upper to lower clutch pedal arm bolt and
slide upper arm through floor boards.
3. Disconnect clutch pedal return spring and over­
center assist spring.
4. Remove clutch push rod lever locking bolt and nut
and remove lever from clutch pedal pivot shaft. Re­
move push rod and lever from dust boot.
5. Slide clutch pedal lower arm out of mounting bracket
sleeve.
. If necessary, remove sleeve by first removing
6
grease fitting and retaining screws and slide sleeve
2
from mounting bracket.
Fig. 11 - C lutch Slave C ylin d er
1. Bleeder V a lv e
2. Fluid Entry Port
3. C ylin d er Body
4. Push Rod Boot
Inspection
1. Check clutch pedal shaft and sleeve for excessive
wear.
2. Check clutch pedal shaft for alignment and, if bent,
straighten or replace.
Installation
1. Reverse removal procedure to install (upper and
lower pedal arms are serrated for alignment during
assembly).
2. Adjust pedal free travel as outlined under Mainte­
nance and Adjustments.
SLAVE CYLINDER
Removal
1. Remove return spring from clutch fork.
5. Push Rod
6. Piston Retaining Ring
7. Piston
8. Piston Seals
CLUTCHES AND TRANSMISSIONS 7-5
2. Disconnect slave cylinder hydraulic line, at slave
cylinder.
3. Remove retaining bolts from slave cylinder and re­
move slave cylinder.
Disassembly
Refer to Figure 11.
1. Remove slave cylinder push rod, push rod boot, and
fulcrum as a unit.
2. Remove snap ring from slave cylinder, using a small
screwdriver blade, as shown in Figure 12, be careful
not to scratch the slave cylinder bore.
3. Remove piston and rubber seal assembly from slave
cylinder bore.
4. Wash all parts in clean alcohol.
NOTE:
Since the clutch hydraulic system on
vehicles equipped with a dual master cylinder,
use the same hydraulic fluid and reservoir as
the brake system, it is essential that the system
Fig. 12 - Removing Slave C ylin d er Snap Ring
be clean. Before washing parts, hands must be
clean and free of all oil.
gasoline or oil before cleaning parts. Use soap
and water to clean hands.
Inspection
1. Inspect slave cylinder bore, making sure that it is
smooth. A scored or damaged cylinder must be
replaced.
2. Check rubber cup for damage or swelling due to im­
proper brake fluid. Replace cup if necessary.
3. Check fit of the piston in the cylinder bore, using a
feeler gauge. This clearance should be from .002"
to .004".
Assembly
1. Install seals (new, preferably) on piston with lip edge
of seals to solid end of piston.
2. Lubricate piston and seal assembly with brake fluid
then install in cylinder as shown in Figure 11.
Do not wash hands in
CHEVROLET TRUCK SERVICE M ANUAL