Chevrolet 70 1969 Series, Shop Manual

Page: 343 / 913

ENGINE FUEL SYSETEM 6M -16
from cam while engine is running, stop mecha­
nism will shut off air supply to engine.
IM PO RTANT
This stop is provided for emergency
use only and should not be used indiscri­
minately since the high vacuum produced
may eventually damage blower seals,
necessitating blower overhaul.
If emergency stop is used it can be reset by
rotating cam away from the spring loaded latch
until cam is held securely in the open position
by the latch.
To adjust emergency stop proceed as follows:
with spring loaded latch engaged in cam and stop
knob pushed in, position adjusting trunnion on wire
approximately 1/4 inch from latch. Check action
of emergency stop after adjustment is made.
Check should be made with engine stopped. When
emergency stop knob is pulled, spring loaded latch
should allow free movement of cam.
AIR CLEANERS
W A R N IN G
USE E X T R E M E C A U T IO N T O BE SURE
T H A T A L L C O M B U S T IB L E C L E A N IN G FLU ID
(G A SOLINE , S O L V E N T , K E R O S E N E , E T C .) IS
R E M O V E D F R O M AIR C L E A N E R A T T IM E O F
C L E A N IN G . U N C O N T R O L L E D F U E L E N T E R ­
ING T H E C O M B U S T IO N C H A M B E R O F A
D I E S E L
E N G IN E C A N CAUSE T H E EN G IN E T O " R U N
A W A Y ” A N D P O S S IB L Y D E S T R O Y IT S E L F
A N D /O R CAUSE IN JU RY T O P E R S O N N E L .
Connections between air cleaner and intake
FUEL
Fuel filter elements on Diesel engines should
be replaced at regular intervals established by
the operator. Element replacement intervals are
dependent on the cleanliness of the fuel and on
storage facilities.
IM P O R T A N T : Neglect of fuel filters can
lead to eventual damage to certain fuel system
components.
manifold or blower must be kept tight to prevent
unfiltered air from entering the engine and caus­
ing damage.
If air cleaner becomes clogged, restricted air
flow will cause power loss and possible engine
damage.
If vehicle is operated in dust storm area,
air cleaner should be cleaned immediately after
such storms occur.
Refer to “ L U B R IC A T IO N ” (SEC. 0) in this
manual for service of air cleaners.
FILTERS
TWO-CYCLE ENGINES
P R I M A R Y F I L T E R
Prim ary
fuel filter (fig. 3) is bracket-
mounted at frame side rail as shown, or on some
vehicles
on fuel
tank
support bracket.
Filter is
equipped
with drain cock and must
be drained periodically to remove any water and
sediment which may accumulate in filter. No
Stamped ,
T-65 !
Figure 3 — Primary Fuel Filter (6V53 Engines)
Figure
4— Secondary
Fuel Filter
(6 VS3
Engines)
CHEVROLET SERIES 70*80 H EAVY DUTY TRUCK SH O P M A N U A L