1956 AMC Hudson Technical Service Manual Supplement

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18 WATER PUMP COOLING SYSTEM The water pump is a centrifugal type utilizing a non-adjustable packless type seal. The impeller housing is cast integrally with the water distribution manifold and the engine front cover. A separate cylinder head water outlet manifold which houses the thermostat is mounted to the impeller housing at the by-pass port and sealed by means of a rubber "0" ring seal (Fig. 1). FIGURE 2—Cross Sectional View of Water Pump be added to the radiator only when the system is cool. Coolant should be added to barely cover the tubes of the core. This precaution will prevent constant loss of coolant due to expansion when heated. The Weather-Eye valve should be fully open when refilling or flushing the system. The engine must be idling during the refilling operation to prevent trapped air interfering with the circulation or Weather-Eye operation. A drain cock is provided on the lower tank of the radiator as well as two drain cocks located approximately in the center of the side of each cylinder bank. 1. Thermostat Housing 4. Water Pump Housing 2. Water Outlet Manifold 5. Outlet Manifold By-pass 3. Water Pump Seal FIGURE 1—Water Pump and Manifold Assemblies The water pump discharges coolant into the distribution manifold where dual outlets supply a balanced flow of coolant into both cylinder banks. The coolant flows through the block and back through the cylinder head to the radiator inlet. RADIATOR The radiator is a conventional vertical flow type with the expansion tank located on top of the tube section. Although the capacities remain essentially the same, radiators with increased fin area are used on models equipped with air conditioning. On models equipped with Hydra-Matic transmission, an oil cooler is incorporated in the bottom of the radiator core to facilitate cooling Hydra-Matic oil. Water or anti-freeze solution should, whenever possible, Cooling System Capacity The cooling system capacity is 22 quarts including heater and oil cooler. Radiator Filler Cap The cooling system radiator filler cap is an atmospheric vented cap. The atmospheric vent valve closes only if there is a coolant vapor flow through the vent valve of .4 to .7 cubic feet per minute. When the vent valve closes, the system will become pressurized 61/4 to 73/4 pounds per square inch. Pressurizing the cooling system increases the boiling point of the coolant. On models equipped with air conditioning, the pressure cap pressurizes the cooling system 12 to 15 pounds per square inch. THERMOSTAT A thermostat is located in the cylinder head water outlet manifold to insure proper engine operating temperatures for maximum economy and engine life. A restricted passage permits the coolant to circulate through the water pump and cylinder block when the thermostat is closed, thus by-passing the radiator core.
COOLING 19 shaft. When equipped with air conditioning, a five-blade fan is used. FAN BELT FIGURE 3—Cross Section Radiator Filler Cap FAN ASSEMBLY An "X" type fan is attached to a hub on the water pump The cooling system fan, generator, and water pump are driven by a "V" type fan belt from a pulley on the vibration damper. The fan belt is adjusted by moving the generator on its mounting bracket to obtain a deflection of approximately 1/2" inward at a point midway between the water pump and generator pulleys. It is important that the proper tension of the fan belt be maintained to insure efficient operation of the cooling and electrical systems. Too much tension will cause excessive wear on the fan and generator bearings.
Page 3: FOREWORD The following product info
Page 6 and 7: 4 TECHNICAL SERVICE MANUAL ENGINE I
Page 8 and 9: 6 TECHNICAL SERVICE MANUAL The valv
Page 10 and 11: 8 TECHNICAL SERVICE MANUAL TIMING C
Page 12 and 13: 10 TECHNICAL SERVICE MANUAL the gro
Page 14 and 15: 12 TECHNICAL SERVICE MANUAL If the
Page 16 and 17: 14 TECHNICAL SERVICE MANUAL Figure
Page 18 and 19: 16 TECHNICAL SERVICE MANUAL 1. Main
Page 22 and 23: 20 ELECTRICAL SECTION The twelve-vo
Page 24 and 25: 22 TECHNICAL SERVICE MANUAL ignitio
Page 26 and 27: 24 CLUTCH SECTION This series with
Page 28 and 29: 26 TECHNICAL SERVICE MANUAL GENERAL
Page 30 and 31: 28 TECHNICAL SERVICE MANUAL it up f
Page 32 and 33: 30 TECHNICAL SERVICE MANUAL mately
Page 34 and 35: 32 TECHNICAL SERVICE MANUAL FIGURE
Page 40 and 41: 38 TRANSMISSION AND OVERDRIVE below
Page 42: 40 TECHNICAL SERVICE MANUAL NEUTRAL
Page 46: 44 SECOND SPEED D-4 RANGE As car sp
Page 50: 48 FOURTH SPEED D-4 RANGE When the
Page 54: FOURTH SPEED 4-3 DETENT DOWNSHIFT 5
Page 58: 56 THIRD SPEED D-3 RANGE D-3 range
Page 62: REVERSE 60 When the selector lever
Page 65 and 66: HYDRA-MATIC TRANSMISSION 63 REMOVIN
Page 67 and 68: HYDRA-MATIC TRANSMISSION 65 FIGURE
Page 69 and 70: HYDRA-MATIC TRANSMISSION 67 l. Spec
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HYDRA-MATIC TRANSMISSION 69 Remove
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HYDRA-MATIC TRANSMISSION 73 assembl
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HYDRA-MATIC TRANSMISSION 79 1. Rear
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HYDRA-MATIC TRANSMISSION 81 1. Rear
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HYDRA-MATIC TRANSMISSION 83 drive t
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HYDRA-MATIC TRANSMISSION 85 Install
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HYDRA-MATIC TRANSMISSION 87 NOTE: R
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HYDRA-MATIC TRANSMISSION 89 While h
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HYDRA-MATIC TRANSMISSION 91 ASSEMBL
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HYDRA-MATIC TRANSMISSION 97 Rotate
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HYDRA-MATIC TRANSMISSION 99 FIGURE
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HYDRA-MATIC TRANSMISSION 101 TESTIN
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HYDRA-MATIC TRANSMISSION 103 power
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HYDRA-MATIC TRANSMISSION 105 GENERA
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HYDRA-MATIC TRANSMISSION 107 Revers
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REAR AXLE 109 REAR AXLE The rear ax
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REAR AXLE 111 Roll the gears around
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REAR AXLE 113 used to determine the
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1956 AMC Hudson Technical Service Manual Supplement

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