Chevrolet 10 Series 1970 Service Manual page 434

CLUTCHES AND TRANSMISSIONS 7-4
DUST]
b o o t
CLUTCH
FORK
FULCRUM ADJUSTING
NUT
F ig . 3 —S lave C y lin d e r and C lu tc h Fork
CLUTCH FREE PEDAL TRAVEL ADJUSTMENT
(M echanical Linkage)
Only one sim ple adjustment is n ecessary to maintain
clutch e ffic ie n c y and assure long life . This adjustment is
fo r the amount of fr e e clutch pedal tra v e l b efo re the
throwout bearing contacts the clutch fin g ers . A s clutch
facin gs w ear, the amount of fr e e pedal tra v e l is reduced
and in tim e this w ill resu lt in clutch slippage. T h e refo re,
it is n ecessa ry to adjust pedal at p erio d ic in terva ls to
provid e sufficien t fr e e pedal tra v e l (3 / 4 " - l" ) to p erm it
fu ll engagem ent of the clutch.
1. D isconnect clutch fo rk return spring at fork.
NOTE: On CG 500
equipped with 6 -cylin d er D ie s e l engines, loosen
adjusting nuts on v e r t ic a l rod (F ig . 1). Adjust
nuts to e ffe c tiv e ly shorten rod length until there
is at least 3 / 8 "-l/ 2 " clearan ce between clutch
interm ediate le v e r and o il filt e r (fig. 15).
" A"
2. Loosen nut (fig . 6) and back off from s w iv e l ap­
pro x im a tely 1/2 inch.
3. Hold clutch fo rk push rod against fo rk to m ove
throwout bearin g against clutch fin gers (push rod w ill
slid e through sw iv e l at cro ss -sh a ft).
4. Adjust nut " B " to obtain approxim ately 3/16" to 1/4"
clearan ce between nut " B " and sw ivel.
5. R elea se push rod, connect return spring and tighten
nut " A" to lock s w iv e l against nut " B" .
6. Check fr e e pedal clearan ce at pedal (3/4" to 1" is
p ro p er clearan ce). Readjust if necessary.
INSUFFICIENT CLUTCH RELEASE
W here com plaints of fir s t o r r e v e r s e gear clash due to
insu fficien t clutch re le a s e are encountered, the follow in g
may be helpful. Cut off the existin g clutch pedal stop
I
BLEED
FITTING
SLAVE
CYLINDER
MAINTENANCE AND ADJUSTMENTS
and MG 600 m odels
FLYW HEEL
F ig . 4 —D iesel C lu tc h —T y p ic a l
bumper to a height of 3/8". Since shortening the bumper
in crea ses the lash and not the usable stroke, the lash
must be reduced to sp ecification s in o rd e r to gain the
additional stroke benefit.
CLUTCH PEDAL ADJUSTMENT (H yd rau lic)
Two adjustments can be
(bumper adjustment) and pedal fr e e tra v el.
CLUTCH
RELEASE
Y O K E
TR A N SM ISSIO N
ASM .
made; pedal
total tra v e l
CHEVROLET TRUCK SERVICE MANUAL