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ENGINE FUEL 6M-6
of vacuum passages and restrictions in the throttle body
and governor housing. A speed sensitive centrifugal
valve in the distributor acts as a vacuum break so that
there is no vacuum applied to the diaphragm until the
desired governed speed is reached. When the governed
speed is reached the valve is closed and vacuum is ap
plied to the diaphragm which acts to close the throttle
valves in opposition to the governor spring tension.
When power is required as load is increased, engine rpm
will drop causing distributor valve to open and allow the
governor spring to open the throttle valves further.
I I I I I Is
BATTERY
SPIN N ER VALVE
AMBER
LAMP
LAMP BURN-OUT CHECKIN G CIRCUIT
IGN ITIO N
SWITCH
-
~
£
-
OIL PRESSURE
SWITCH
DISTRIBUTOR
CARBURETOR
BUTTERFLY VALVE
ACTUATOR
AIR INLET
Fig. 4 G - G overnor and Overspeed W arning Light Cross-Section
MAJOR SERVICE OPERATIONS
CONTROL VALVE
Whenever the distributor is removed for overhaul, the
governor control valve mechanism should be disassem
bled and cleaned (see Engine Distributors in Section
6
Y).
GOVERNOR HOUSING
Removal
1. Remove the four governor cover attaching screws
and then the governor cover and gasket if used.
2. Detach and remove the governor spring.
3. Remove the eight diaphragm cover attaching screws
and then th# diaphragm cover. Hold the throttle
lever to avoid damage to the throttle valves and
loosen the nut attaching the governor lever and pin
assembly to the throttle shaft. Remove the governor
lever from the throttle shaft, then detach it from the
diaphragm rod by rotating the lever until the tang on
the rod clears the slot in the lever.
4. Remove the diaphragm assembly from the housing
and inspect for cracks or holes. If the diaphragm is
damaged in any way, it must be replaced.
5. Remove the three governor attaching screws, then
remove the leather seal retainer and leather seal.
6
. Detach the governor housing from the throttle body.
7. The throttle lever and bearing assembly can be re
moved by detaching the fast idle cam and pump rod
and removing the four attaching screws. No attempt
should be made to service the throttle lever bearing.
If the action is sticky or binding to the point that the
throttle return spring cannot overcome the binding,
the throttle lever assembly should be replaced.
CAUTION:
Since the idle ports in the throttle
body were drilled after the throttle body was
assembled, the throttle valves were nicked dur
ing the drilling operation. No attempt should be
made to remove the throttle valve or to further
disassemble the throttle body, since any slight
change in positioning of the throttle valves with
relation to the idle ports would seriously disrupt
carburetor operation.
CHEVROLET TRUCK SERVICE MANUAL
Содержание 10 Series 1967
Страница 1: ...CHASSIS V3 a n s W U gw...
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Страница 39: ...HEATER AND AIR CONDITIONING 1A 11 EVAPORATOR OUTLET Fig 20 Airflow Schematic CHEVROLET TRUCK SERVICE MANUAL...
Страница 80: ...BODY IB 18 Fig 41 Exploded View of Level Ride Seat CHEVROLET TRUCK SERVICE MANUAL...
Страница 89: ...BODY IB 27 CHEVROLET TRUCK SERVICE MANUAL...
Страница 105: ...BODY IB 43 Fig 94 Check Link Assembly Typical CHEVROLET TRUCK SERVICE MANUAL...
Страница 117: ...BODY IB 55 Fig 116 A uxiliary Seat CHEVROLET TRUCK SERVICE MANUAL...
Страница 121: ...Fig 4 1 0 3 0 Series Truck Frame...
Страница 122: ...Fig 5 4 0 6 0 Single A xle Truck Frames Exc T ilt Cab FRAME 2 4...
Страница 124: ...CHEVROLET TRUCK SERVICE MANUAL 1 Ficu 7 4 0 6 0 Series T ilt Cab Truck Frames FRAME 2 6...
Страница 128: ...CHEVROLET TRUCK SERVICE MANUAL Fig 8 Underbody Reference Points and Dimensions Chevy Van G10 and 20 FRAME 2 10...
Страница 207: ...REAR SUSPENSION AND DRIVE LINE 4 49 Fig 91 Tandem Rear Axles and Power Divider CHEVROLET TRUCK SERVICE MANUAL...
Страница 228: ...BRAKES 5 12 TD 50 60 Fig 23 Parking Brake Cables T Models CHEVROLET TRUCK SERVICE MANUAL...
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Страница 336: ...ENGINE FUEL 6M 12 CHEVROLET TRUCK SERVICE MANUAL...
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Страница 393: ...CHEVROLET TRUCK SERVICE MANUAL CLUTCHES AND TRANSMISSIONS 7 7...
Страница 452: ...FUEL TANK AND EXHAUST SYSTEMS 8 6 Fig 7 Fuel Lines and Filter CD50 60 CHEVROLET TRUCK SERVICE MANUAL...
Страница 472: ...STEERING 9 18 Fig 31 Typical Power Steering Hose Routing CHEVROLET TRUCK SERVICE MANUAL...
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Страница 502: ...l c t r iC al 12 2...
Страница 506: ...ELECTRICAL BODY AND CHASSIS 12 6 VIEW C Fig 9 Front Lighting Assemblies CHEVROLET TRUCK SERVICE MANUAL...
Страница 532: ...ELECTRICAL BODY AND CHASSIS 12 32 Fig 42 Engine Compartment PT 20 30 CHEVROLET TRUCK SERVICE MANUAL...
Страница 535: ...ELECTRICAL BODY AND CHASSIS 12 35 Fig 45 Engine Compartment CS40 50 60 MS60 CHEVROLET TRUCK SERVICE MANUAL...
Страница 561: ...ELECTRICAL BODY AND CHASSIS 12 61 18 DG 18 DG Fig 71 Instrument Panel G A 10 20 CHEVROLET TRUCK SERVICE MANUAL...
Страница 562: ...ELECTRICAL BODY AND CHASSIS 12 62 Fig 72 Engine and Tail Lamps G A 10 20 CHEVROLET TRUCK SERVICE MANUAL...
Страница 566: ...ELECTRICAL BODY AND CHASSIS 12 66 Fig 76 Engine Compartment SE50 60 CHEVROLET TRUCK SERVICE MANUAL...
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Страница 587: ...SPECIFICATIONS 7 ENGINE SECTION 6 8 25 1 on CE TE400 Series CHEVROLET TRUCK SERVICE MANUAL...
Страница 590: ...SPECIFICATIONS 10 ENGINE TORQUES CHEVROLET TRUCK SERVICE MANUAL...