Chevrolet 30 Series 1967 Service Manual page 388

CLUTCHES AND TRANSMISSIONS 7-2
Fig. 2 - C lutch Linkage (Step-Van)
CLUTCH FREE PEDAL TRAVEL ADJUSTMENT
(Mechanical Linkage)
Only one simple adjustment is necessary to maintain
clutch efficiency and assure long life.
for the amount of free clutch pedal travel before the
throwout bearing contacts the clutch fingers (fig. 2). As
clutch facings wear, the amount of free pedal travel is
reduced and in time this will result in clutch slippage.
Therefore, it is necessary to adjust pedal at periodic
intervals to provide sufficient free pedal travel (3 /4"-1")
to permit full engagement of the clutch.
1. Disconnect clutch fork return spring at fork.
2. Loosen nut "A" (fig. 5) and back off from swivel ap­
proximately inch.
1 / 2
3. Hold clutch fork push rod against fork to move
throwout bearing against clutch fingers (push rod will
slide through swivel at cross-shaft).
4. Adjust nut "B " to obtain approximately 3/16" to 1/4"
clearance between nut "B " and swivel.
5. Release push rod, connect return spring and tighten
nut "A" to lock swivel against nut "B ".
. Check free pedal clearance at pedal (3/4" to 1" is
6
VIEW A
MAINTENANCE AND ADJUSTMENTS
This adjustment is
B
CLUTCH
FORK
FULCRUM ADJUSTING
NUT
Fig. 3 - S lav e C ylin d er and C lutch Fork
Fig. 4 - Diesel Clutch - Typical
proper clearance). Readjust if necessary.
INSUFFICIENT CLUTCH RELEASE
Where complaints of first or reverse gear clash due to
insufficient clutch release are encountered, the following
may be helpful. Cut off the existing clutch pedal stop
bumper to a height of 3/8". Since shortening the bumper
increases the lash and not the usable stroke, the lash
must be reduced to specifications in order to gain the
additional stroke benefit.
CLUTCH PEDAL HEIGHT ADJUSTMENT
(Step Van)
An adustable pedal stop (on the clutch pedal arm be­
neath floor level) is provided to adjust clutch pedal to the
same height as the brake pedal.
NOTE:
Pedal free travel adjustment MUST be
made after this adjustment is made.
1. Loosen lock nut.
2. Turn adjustment bolt until clutch pedal is equal
BLEED
FITTING
SLAVE
CYLINDER
CHEVROLET TRUCK SERVICE MANUAL