HEATER AND AIR CONDITIONING 1A-16
The vacuum pump (fig. 28) is a component part of
Charging Station J-8393, described previously. The fo l
lowing precautions should be observed relative to the
operation and maintenance of this pump.
•
Make sure dust cap on discharge outlet of vacuum
pump is removed before operating.
®
Keep all openings capped when not in use to avoid
moisture being drawn into the system,
e
Oil should be changed after every 250 hours of
normal operation.
To change oil, simply unscrew hex nut located on back
side of pump, tilt backward and drain out oil (fig. 28).
Recharge with 8 ounces of vacuum pump oil Frigidaire
150 or equivalent (fig. 28). If you desire to flush out the
pump, use this same type clean oil. Do not use solvent.
NOTE:
Improper lubrication will shorten the
life of pump.
•
If this pump is subjected to extreme or prolonged
cold, allow it to remain indoors until oil has reached
approximate room temperature. Failure to warm
oil will result in a blown fuse.
•
A five ampere time delay cartridge fuse has been
installed in the common line to protect the windings
of the compressor. The fuse will blow if an ex
cessive load is placed on the pump. In the event the
fuse is blown, replace with a five ampere time delay
fuse - do not use a substitute fuse as it will result in
damage to the starting windings.
•
If the pump is being utilized to evacuate a burnt-out
system, a filter must be connected to the intake
fitting to prevent any sludge from contaminating the
working parts, which will result in malfunction of the
pump.
•
Do not use the vacuum pump as an air compressor.
LEAK TESTING THE SYSTEM
Whenever a refrigerant leak is suspected in the system
or a service operation performed which results in dis
turbing lines or connections, it is advisable to test for
leaks. Common sense should be the governing factor in
performing any leak test, since the necessity and extent
of any such test will, in general, depend upon the nature
of the complaint and the type of service performed on
the system. It is better to test and be sure, if in doubt,
than to risk the possibility of having to do the job over
again.
NOTE:
The use of a leak detecting dye within
the system is not recommended because of the
following reasons:
1. Refrigerant leakage can exist without any oil leakage.
In this case the dye will not indicate the leak, how
ever, a torch detector will.
2. The addition of additives, other than inhibitors, may
alter the stability of the refrigeration system and
cause malfunctions.
3. Dye type leak detectors which are insoluble form a
curdle which can block the inlet screen of the ex
pansion valve.
Leak Detector
Tool J-6084 (fig. 29) is a propane gas-burning torch
which is used to locate a leak in any part of the system.
Refrigerant gas drawn into the sampling tube attached to
the torch will cause the torch flame to change color in
proportion to the size of the leak. Propane gas fuel
cylinders used with the torch are readily available
commercially throughout the country.
CA U TIO N :
Do not use lighted detector in any
place where combustible or explosive gases,
dusts or vapors may be present.
Fig . 28—Vacuum Pump
O perating Detector
1. Determine if there is sufficient refrigerant in the
system for leak testing.
2. Open control valve only until a low hiss of gas is
heard, then light gas at opening in chimney.
C O R D TO
PUMP
PUMP D IS C H A R G E
110 A C S O U R C E
INLET
OUTLET
FIVE AMP
TIME D ELA Y
FUSE
CHEVROLET TRUCK SERVICE MANUAL
Содержание 10 Series 1968
Страница 1: ...ST 1 3 3 SB...
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Страница 52: ...HEATER AND AIR CONDITIONING 1A 21 Fig 32 Charging Schematic CHEVROLET TRUCK SERVICE MANUAL...
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Страница 128: ...BODY IB 61 Fig 135 A uxiliary Seat CHEVROLET TRUCK SERVICE MANUAL...
Страница 132: ...Fig 4 1 0 3 0 Series Truck Frame...
Страница 133: ...Fig 5 4 0 6 0 Single A xle Truck Frame E x c Tilt Cab...
Страница 135: ...Fig 7 4 0 6 0 Series Tilt Cab Truck Frames...
Страница 138: ...CHEVROLET TRUCK SERVICE MANUAL Fig 8 Underbody Reference Points and Dimensions Chevy Van G10 and G20 J FRAME 2 9...
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Страница 169: ...fit w...
Страница 223: ...REAR SUSPENSION AND DRIVE LINE 4 54 Fig 101 Forward Rear Axle Assembly Exploded View CHEVROLET TRUCK SERVICE MANUAL...
Страница 233: ...I...
Страница 248: ...BRAKES 5 15 TD 50 60 Fig 26 Parking Brake Cables T Models CHEVROLET TRUCK SERVICE MANUAL...
Страница 299: ...BRAKES 5 56 Fig 88 Frame Mounted Vacuum Single Diaphragm Power Brake Installation CHEVROLET TRUCK SERVICE MANUAL I...
Страница 331: ...BRAKES 5 88 Fig 126 Stopmaster Brake Components Automatic Adjuster with Fail Safe CHEVROLET TRUCK SERVICE MANUAL...
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Страница 398: ...ENGINE FUEL 6M 5 Fig 7 C Throttle Linkage GS100 200 Fig 8C Throttle Linkage GE100 200 CHEVROLET TRUCK SERVICE MANUAL...
Страница 409: ...ENGINE FUEL 6M 16 Fig 12A CM KM 250 CM350 Fig 13A CM KM 250 CM350 CHEVROLET TRUCK SERVICE MANUAL...
Страница 410: ...ENGINE FUEL 6M 17 Fig 14A PE200 300 TE400 500 600 Fig 15A PT200 300 CHEVROLET TRUCK SERVICE MANUAL...
Страница 411: ...ENGINE FUEL 6M 18 Fig 18A V 8 Typical CHEVROLET TRUCK SERVICE MANUAL...
Страница 412: ...ENGINE FUEL 6M 20 ENGINE FUEL 6M 19 Fig 21 A CE100 200 With Heat Stove CHEVROLET TRUCK SERVICE MANUAL...
Страница 413: ...ENGINE FUEL 6M 20 Fig 2 2 A C S K A 1 00 200 CS300 With Heat Stove CHEVROLET TRUCK SERVICE MANUAL...
Страница 414: ...ENGINE FUEL 6M 21 Fig 25A CS PS SS400 CS M S SS500 CS600 TSOOO With Heat Stove CHEVROLET TRUCK SERVICE MANUAL...
Страница 470: ...CLUTCHES AND TRANSMISSIONS 7 7 Fig 14 Clutch Linkage Exploded View CHEVROLET TRUCK SERVICE MANUAL...
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Страница 549: ...STEERING 9 16 KA 10 20 CE ME SE 50 CE SE 60 Fig 29 Typical Power Steering Hose Routing CHEVROLET TRUCK SERVICE MANUAL...
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Страница 583: ...CHASSIS SHEET METAL 11 12 Fig 20 Designation and Name Plate CHEVROLET TRUCK SERVICE MANUAL...
Страница 585: ...CHASSIS SHEET METAL 11 14 SPECIAL TOOLS Fig 24 J 5544 1 Hood Spring Remover CHEVROLET TRUCK SERVICE MANUAL...
Страница 587: ...ELECTRICAL BODY AND CHASSIS 12 2 Fig 1 Fuse Panel CHEVROLET TRUCK SERVICE MANUAL...
Страница 591: ...ELECTRICAL BODY AND CHASSIS 12 6 CA SA MA 50 60 CHEVY VAN Fig 9 Front Lighting Assemblies CHEVROLET TRUCK SERVICE MANUAL...
Страница 596: ...ELECTRICAL BODY AND CHASSIS 12 11 Fig 15 Electrical Components Conv Cab CHEVROLET TRUCK SERVICE MANUAL...
Страница 611: ...r ELECTRICAL BODY AND CHASSIS 12 26 9 CHEVROLET TRUCK SERVICE MANUAL...
Страница 622: ...ELECTRICAL BODY A N D CHASSIS 12 37 IGNITION SWITCH Fig 44 Engine Compartment PA20 30 CHEVROLET TRUCK SERVICE MANUAL...
Страница 623: ...ELECTRICAL BODY A N D CHASSIS 12 38 Fig 45 Engine Compartment PS40 CHEVROLET TRUCK SERVICE MANUAL...
Страница 633: ...ELECTRICAi BODY A N D CHASSIS 12 48 Fig 55 Engine Compartment SE50 60 02 62 CHEVROLET TRUCK SERVICE MANUAL...
Страница 634: ...YJ ELECTRICAL CHASi V 49 4 Fig 56 Engine Compartment C D C G CD60 CHEVROLET TRUCK SERVICE MANUAL...
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Страница 698: ...SPECIFICATIONS 12 ENGINE TORQUES CHEVROLET TRUCK SERVICE MANUAL...
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