Chevrolet 70 Series 1970, Service Manual

Page: 641 / 841

TRANSMISSIONS AND CLUTCHES 7-42
Figure 3 —Spicer Clutch (Typical)
SERIES 90 EQUIPPED WITH LIPE-ROLLWAY
14-INCH DUAL DISC CLUTCH (R efer to F ig. 2)
1. Block clutch pedal in fully engaged position
(against stop bumper) and hold rea r id ler le v e r
again st stop (as shown).
2. Rotate upper adjusting nut until it contacts
upper rod. Tighten upper lock nut again st upper
adjusting nut.
3. D iscon n ect clutch le v e r return sp rin g from
r e le a s e le v e r .
4. L oosen low er lock nut. Adjust p osition of
low er adjusting nut to provide 1 / 4 - inch clea ra n ce
betw een wedge and adjusting nut, with the r e le a s e
le v e r held rearw ard until the r e le a s e bearing is
ju st contacting the r e le a s e fin g e rs.
5. Tighten low er lock nut against low er ad­
justing nut and connect clutch le v e r return spring.
R em ove block from clutch pedal.
SERIES 90 ALUM. TILT EQUIPPED WITH SPICER
14-INCH OR 15-1/2-IN C H DUAL DISC CLUTCH
Follow ing is a b r ie f explanation why this
clutch m ust be adjusted internally:
CAUTION
DO NOT ADJUST THE EX T ER N A L
LINKAGE OF TH E SP IC ER 15/2-INCH
CLU TCH TO COMPENSATE FOR W EAR.
THE EX TER N A L LINKAGE SHOULD
ONLY BE R E S E T TO PROVIDE PRO PER
F R E E -T R A V E L A F T E R TH E INTERNAL
CLU TCH ADJUSTMENT HAS B EEN MADE.
M ost m aintenance person n el u se the clutch
p edal " free-travel" o r "free-pedal" m ovem ent as
CHEVROLET SERIES 70-90 HEAVY DUTY TRUCK SHOP MANUAL