Chevrolet 30 Series 1967 Service Manual page 425

PERIODIC LOW BAND ADJUSTMENT (Fig. IPG )
Low band adjustment should be periodically performed
at mile intervals, or sooner, as necessary if op­
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erating performance indicates low band slippage.
1. Raise vehicle and place selector lever in neutral.
2. Remove protective cap from transmission adjusting
screw.
3. On some models: To gain clearance between under­
body and transmission, it may be necessary to re­
move rear mount bolts from crossmember, and move
transmission slightly
vehicle.
4. Loosen adjusting screw lock nut 1/4 turn and hold in
this position with wrench.
5. Using Special Tool J - 21848 adjust band to 70 in. lbs.
and back off four (4) complete turns for a band which
has been in operation for
three (3) turns for one in use less than 6,000 miles.
CAUTION: Be sure to hold the adjusting screw
lock nut at l / 4 turn loose with a wrench during
the adjusting procedure.
. Tighten the adjusting screw lock nut to specified
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torque.
CAUTION: The amount of back-off is not an
approximate figure, it must be exact.
Fig. I P G - Adjusting Low Band Using J — 21848
MANUAL SHIFT LINKAGE CHECK & ADJUST
1. The shift tube and lever assembly must be free in the
mast jacket. See Section 9 for alignment of steering
column assembly if necessary.
To check for proper shift linkage adjustment, lift the
2.
transmission selector lever towards the steering
toward passenger side of
miles or more, or
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CLUTCHES AND TRANSMISSIONS 7-39
wheel. Allow the selector lever to be positioned in
drive (D) by the transmission detent.
NOTE:
Do_ not use the indicator pointer as a
reference to position the selector lever. When
performing linkage adjustment, pointer is ad­
justed last.
3. Release the selector lever.
hibited from engaging low range unless the lever is
lifted.
4. Lift the selector lever towards the steering wheel,
and allow the lever to be positioned in neutral (N) by
the transmission detent.
5. Release the selector lever. The lever should now be
inhibited from engaging reverse range unless the
lever is lifted.
. A properly adjusted linkage will prevent the selector
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lever from moving beyond both the neutral detent,
and the drive detent unless the lever is lifted to pass
over the mechanical stop in the steering column. See
schematic diagram.
7. In the event that an adjustment is required, place the
selector lever in drive (D) position as determined by
the transmission detent. See Steps 2 and 3.
. Loosen the adjustment swivel at the mast jacket
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lever, and rotate the transmission lever so that it
contacts the drive stop in the steering column.
9. Tighten the swivel and recheck the adjustment. See
Steps 2 and .
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10. Readjust indicator needle if necessary to agree with
the transmission detent positions. See Section 9.
11. Readjust neutral safety switch if necessary to pro­
vide the correct relationship to the transmission
Fig. 2 P G - Powerglide Control Rod Linkage
The lever should be in­
CHEVROLET TRUCK SERVICE MANUAL