Clutch Pedal Free Travel; Clutch Mechanism-Adjustment (H Series); Initial Ball Stud Adjustment - Pontiac TRANS AM 1977 Service Manual

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CLUTCH
7C-5
determine whether trouble is actually in the clutch.
Check the clutch linkage to be sure the clutch releases
fully as follows:
1. With engine running and brake on, hold the clutch
pedal approximately 1/2" from floor mat and move shift lever
between first and reverse several times. If this can be done
smoothly, the clutch is fully releasing. If shift is not smooth,
clutch is not fully releasing and adjustment is necessary.
2. Check clutch pedal bushings for sticking or excessive
wear.
3. Check fork for proper installation on ball stud. Lack
of lubrication on fork can cause fork to be pulled off the ball.
4. Check for bent, cracked or damaged cross shaft levers
or support bracket.
5. Loose or damaged engine mounts may allow the
engine to shift its position causing a bind on clutch linkage
at the cross shaft. Check to be sure there is some clearance
between cross shaft and both mount brackets.
6. Check clutch release bearing and clearance between
spring fingers and front bearing retainer on the transmission.
If no clearance exists, fork may be improperly installed on
ball or clutch disc may be worn out.
CLUTCH PEDAL FREE TRAVEL
A, F or X Series (Fig. 7C-5)
There is one linkage adjustment (clutch fork push rod
or pedal push rod) to compensate for all normal clutch wear.
1. Disconnect return spring at clutch fork.
2. Rotate clutch lever and shaft assembly until clutch
pedal is firmly against rubber bumper on dash brace.
3. Push outer end of clutch fork rearward until clutch
release bearing lightly contacts pressure plate fingers.
4. Install push rod in gage hole and increase length until
all lash is removed from system.
5. Remove swivel or rod from gage hole and insert into
lower hole on lever. Install retainer and tighten lock nut being
careful not to change rod length.
6. Reinstall return spring and check pedal free travel.
Pedal travel should be 3/4" to 1 5/16" for A Series or 7/8"
to 1 7/16" for F and X Series.
H Series (Fig. 7C-6, View A)
Adjustment for normal clutch wear is accomplished by
turning the clutch fork ball stud counterclockwise to give .90
f .25 lash at clutch pedal.
1. Remove ball stud cap and loosen lock nut on ball stud
end located to the right of the transmission on the clutch
housing.
2. Adjust ball stud to obtain
.90"
+
.25" free travel at
the clutch pedal.
3. Tighten lock nut to 25 lb. ft., being careful not to
change adjustment, and install ball stud cap.
4. Check operation of clutch.
RUBBER BU,MPER
CLUTCH PEDAL
SHAFT ASM.
LEVER &
SHAFT ASM.
GAGE HOLE
CLUTCH
VlEW A
VlEW B
Fig. 7C-5 Clutch Pedal Free Travel (A,
F
or
X
Series)
-
I
/
-
f
CLUTCH
\
HOUSING ASM
1
4462
Fig. 7C-6 Clutch Pedal Free Travel and Adjustment
(H
Series
CLUTCH M E C H A N I S ~ ADJUSTMENT
(H SERIES)
Initial adjustment after clutch and/or cable replacement
is accomplished at two points, at the ball stud and at the lower
end of the cable, as described in the following procedure:
Initial Ball Stud Adjustment
1. Prior to attachment of cable, place gage J 23644 so
flat end is against front face of the clutch housing and the
hooked end is located at point of cable attachment on fork
(Fig. 7C-6, View B).

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Firebird 1977

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