Chevrolet DB90 Series, Service Manual

Page: 113 / 242

Sec. 6M-107
GumwUnb jb ie le l Srncjine,
A ll inform ation in S erv ice Manual ST 135-70 pertaining to "CUMMINS DIESEL
ENGINES” p ages 6M -36 and 6M -37, is applicable to m odels covered by this sup­
plem ent with the exception of the following:
ACCELERATOR AND THROTTLE LINKAGE ADJUSTMENT
JB MODELS
(R efer to F igure 1)
1. Adjust pedal stop "G" to 1.56" dim ension
from floor board to top of stop as shown. Rem ove
sp rin g "E."
2. D isconnect rod "A" from throttle le v e r "C."
L oosen lock nut ”B."
3. Make su re throttle pedal is against pedal
stop "G" by pushing throttle le v e r "C" rearw ard.
4. Adjust slip joint "D" until attached stud
en ters le v e r "C" fr e e ly . In stall nut attaching rod
"A" to le v e r "C" and torque 3 to 5 foot-pounds.
5. Lengthen rod "A" by turning slip joint "D"
th ree com plete turns (to provide overtravel) and
tighten lock nut "D." R eplace spring "E."
MB MODELS
(Refer to F igure 2)
1. Adjust a ccelera to r pedal stop "G" to 1.50”
dim ension from floor to head of bolt as shown.
R em ove spring " F .”
2. L oosen lock nut "B," and disconnect rod "A”
at lev er "C."
3. Make su re a c celera to r pedal is against
stop "G" pushing le v e r "C" rearw ard.
4. Adjust slip joint "D" until attaching stud
w ill enter le v e r "C" fr e e ly . Install nut and torque
to 3 to 5 foot-pounds. Lengthen rod "A" by turning
slip joint "D" three additional turns (to provide
overtravel) and lock nut "B" se c u r e ly . Install
spring "F."
MC MODELS
(Refer to Figure 3)
1. Adjust pedal stop "A" to 1.50” dim ension
from floor "B" to stop "A" as shown in figure 3.
R em ove throttle spring "I."
2. L oosen throttle le v e r "C" and se t throttle
le v e r "D" when at idle position to 18° 15' a s shown.
Tighten bolt "C."
NOTE: A protractor can be u sed for th is s e t ­
ting.
Figure 1 —A ccelerator Linkage (JB M odels)
CHEVROLET SERIES 70-90 HEAVY DUTY TRUCK SHOP MANUAL SUPPLEMENT
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