1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club

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9 - 8 OVERDRIVE This grounds that portion of the circuit connected to one terminal of the relay (marked 2), and if the generator is charging the relay contacts will close. This sends battery current to the solenoid terminal No. 4 (1/4" terminal screw) energizing the windings of the solenoid, causing the solenoid plunger to move, compressing the inner spring, and urging the pawl toward engagement. Upon completion of the plunger movement, a contact within the solenoid opens, disconnecting the heavy traction-coil winding, leaving the lighter holding-coil winding energized. The solenoid parts remain in this position until the driver closes the throttle, which causes the slowing-down of the sun gear to the reversal point and permits the pawl to move into engagement under the pressure of the inner spring. The movement of the solenoid plunger also compresses the outer spring; whenever the car speed falls to a point 2 or 3 mph. below the cut-in point, the governor contacts open, releasing the relay, and opening the solenoid circuit, whereupon the outer spring withdraws the pawl from engagement. The circuit then remains inactive until the car speed again reaches the cut-in point. DRIVER CONTROLLED OPERATION When operating in overdrive, the driver may require to return to direct drive without reducing the car speed below the cut-out point. If the accelerator pedal is pressed down beyond the position corresponding to wide-open throttle, the stem of the kickdown switch is pressed, thus opening that part of the control circuit between the governor and relay, whose contact points open, de-energizing the solenoid, the outer spring of which urges the pawl toward release. Due to the fact that the engine is driving the car through the overdrive gear train, the pawl is pinched by the torque reaction and cannot release until the driving torque is removed. This is accomplished as follows: The solenoid stem is provided with a contact which closes whenever the pawl is engaged grounding the No 10-32 screw terminal of the solenoid, which is connected to one of the lower terminals of the kickdown switch; when the latter is moved to open the connection across its upper terminals, the lower terminals are connected, and this grounds the primary breaker of the ignition distributor, thus interrupting the engine torque. The pawl immediately snaps out of engagement, and this movement opens the grounding contacts of the solenoid, restoring the ignition. This entire action occurs with such rapidity that not more than 3 or 4 cylinder explosions are missed. In the event that the driver raises his foot slightly from the accelerator pedal the normal position of the throttle switch is restored, thus re-energizing the solenoid, but the pawl cannot reengage until the throttle is closed to cause the engine to slow down sufficiently to reverse the rotation of the sun gear, as previously explained. LOCKED-OUT OPERATION: When the overdrive unit is operated in the locked-out, or conventional drive condition, either by having the dash control knob pulled out, or by shifting the transmission into reverse, the shift rail is moved to the rear which also opens the control switch. Since this opens the circuit between the governor and relay, the latter cannot act to energize the solenoid. This prevents any possible attempt to engage the pawl when operating in either conventional drive or reverse. OVERDRIVE REPAIR SERVICING EXTERNAL UNITS GOVERNOR SWITCH AND PINION: Servicing of governor switch and governor switch pinion may be accomplished by disconnecting wire or wires at governor switch and then screwing governor switch out of overdrive case.
OVERDRIVE 9 - 9 CONTROL SWITCH The control switch is attached to the Overdrive housing by two 10-24 screws. Before reInstalling check for damaged gasket and defective wire terminals. SOLENOID Detach the solenoid by removing the two mounting screws and turning solenoid 1/4 turn clockwise while pulling out. To Install, reverse this procedure. After holes in flange and housing are lined up, but before Installing cap screws, pull straight out on solenoid. If it can be pulled out, the ball at the end of the solenoid rod was improperly Installed (not locked in the pawl.) OIL SEAL (OD. MAINSHAFT) 1. Disconnect universal joint at transmission companion flange. 2. Remove the bolts attaching the propeller shaft center bearing support bracket and move propeller shaft rearward to clear companion flange. 3. Remove the companion flange nut, washer, and with puller tool J-820, remove the companion flange. 4. Pry out oil seal from rear of case. NOTE: DO NOT DAMAGE overdrive case bore during this operation. To Install, reverse procedure of removal and coat outside of seal with a film of white lead and drive seal into place with a suitable driver. Tighten companion flange nut to 90100 foot pounds. OIL SEAL (OD. CONTROL SHAFT) Remove control lever and pry out seal with sharp punch. Coat outside of new seal with white lead and drive seal into place with a tubular driver having an inside diameter of 5/8" and outside diameter of 15/16" SERVICING UNITS REQUIRING REMOVAL OF OVERDRIVE HOUSING ONLY Repairs to the overdrive case, overdrive mainshaft, mainshaft ring gear, free wheeling cam, pinion cage assembly, stationary gear, shift rail and fork assembly, overdrive mainshaft rear and front bearing, overdrive main-shaft oil seal, speedometer drive gear, solenoid pawl and interlock plunger may be performed underneath the car by removing the overdrive housing without disturbing the transmission. See "Overdrive Housing Removal". However, if the transmission mainshaft, overdrive adapter, or transmission mainshaft bearing are to be replaced, it will be necessary to proceed as outlined under "Transmission and Overdrive Removal". OVERDRIVE HOUSING REMOVAL 1. Place car on stand jacks. 2. Remove drain plugs and drain transmission and overdrive cases. 3. Disconnect governor switch and overdrive solenoid and control switch wires. 4. Disconnect universal joint at overdrive companion flange. 5. Remove the bolts attaching center bearing support bracket and move propeller shaft rearward to clear companion flange. 6. Remove speedometer cable and speedometer driven gear. 7. Disconnect overdrive control cable at control shaft lever. 8. Remove the companion flange nut, washer and with puller J-820, remove the companion flange.
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HUDSON SHOP SERVICE MANUAL 1948 - 1
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FORWARD I The information contained
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ALPHABETICAL INDEX - CONTINUED III
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ALPHABETICAL INDEX - CONTINUED V Gr
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ALPHABETICAL INDEX - CONTINUED VII
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LUBRICATION 1 - 1 The present day h
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LUBRICATION 1 - 3
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LUBRICATION 1 - 5 WATER RESISTANT L
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LUBRICATION 1 - 7 ENGINE OILING CIR
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LUBRICATION 1 - 9 cylinder engines.
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ENGINE TUNE-UP 2 - 1 SECTION 2 ENGI
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ENGINE TUNE-UP 2 -3 If a starter-ba
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ENGINE TUNE-UP 2 -5 5. After comple
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ENGINE TUNE-UP 2 -7 Connect one lea
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ENGINE TUNE-UP 2 -9 BREAKER ARM SPR
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ENGINE TUNE-UP 2 -11 VACUUM ADVANCE
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ENGINE TUNE-UP 2 -13 3. Turn tester
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ENGINE TUNE-UP 2 -15 FIGURE 22 CAUT
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ENGINE TUNE-UP 2 -17 2. Connect a s
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ENGINE TUNE-UP 2 -19 3. Pump travel
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ENGINE TUNE-UP 2 -21 2. Hold thrott
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ENGINE 3 - 1 ENGINE: Arrangement Co
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ENGINE 3 - 3 VALVES: Intake Angle o
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ENGINE 3 - 5 LUBRICATION 8 CYLINDER
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ENGINE TUNE-UP 3 - 7 2. Inlet conne
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ENGINE 3 - 9 NOTE: The #2 crossmemb
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ENGINE 3 - 11 INSPECTION: 1. Remove
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ENGINE 3 - 13 CAUTION: If the threa
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ENGINE 3 - 15 NOTE: When Installing
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ENGINE 3 - 17 When assembling new o
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ENGINE 3 - 19 CAUTION: Be sure the
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ENGINE 3 - 21 A code letter and the
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ENGINE 3 - 23 a 3 to 4 pound pull.
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ENGINE 3 - 25 The connecting rod be
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ENGINE 3 - 27 Figure 32. On the 8 c
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FIGURE 33 ENGINE 3 - 29
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ENGINE 3 - 31 TIMING GEAR COVER OIL
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ENGINE 3 - 33 TIMING GEAR Installat
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ENGINE 3 - 35 REMOVAL: CAMSHAFT (8
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ENGINE 3 - 37 18. Replace coolant a
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FIGURE 44 ENGINE 3 - 39
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ENGINE 3 - 41 Valve guides can be r
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SECTION 4 FUEL SYSTEM & EXHAUST CAR
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SECTION 4 FUEL SYSTEM & EXHAUST ENG
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FUEL SYSTEM & EXHAUST 4 - 5 An anti
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FUEL SYSTEM & EXHAUST 4 - 7 UNLOADE
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FUEL SYSTEM & EXHAUST 4 - 9 6. Remo
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FUEL SYSTEM & EXHAUST 4 - 11 5. Ins
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FUEL SYSTEM & EXHAUST 4 - 13 18. In
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FUEL SYSTEM & EXHAUST 4-15 CARBURET
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FUEL SYSTEM & EXHAUST 4 - 17 2. Wit
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FUEL SYSTEM & EXHAUST 4 - 19 6. Rem
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FUEL SYSTEM & EXHAUST 4 - 21 7. Ins
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FUEL SYSTEM & EXHAUST 4 - 23 FIGURE
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FUEL SYSTEM & EXHAUST 4 - 25 NOTE:
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TWIN CARBURETOR Installation INSTRU
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FUEL SYSTEM & EXHAUST 4 - 29 pipe a
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FUEL SYSTEM & EXHAUST 4 - 31 AIR CL
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FUEL SYSTEM & EXHAUST 4 - 33 FIGURE
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FIGURE 106 FUEL SYSTEM & EXHAUST 4
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FUEL SYSTEM & EXHAUST 4 - 37 4. Dri
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FUEL SYSTEM & EXHAUST 4 - 39 GAUGE
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FUEL SYSTEM & EXHAUST 4 - 41 MANIFO
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COOLING SYSTEM 5 - 1 SECTION 5 COOL
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COOLING SYSTEM 5 - 3 2. Install rad
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COOLING SYSTEM 5 - 5 WATER PUMP - 6
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COOLING SYSTEM 5 - 7 1. Cover bolt
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COOLING SYSTEM 5 - 9 Continue heati
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ELECTRICAL SYSTEM 6 - 1 Models GENE
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ELECTRICAL SYSTEM 6 - 3 IAT-4009 IA
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ELECTRICAL SYSTEM 6 - 5 a heavy shu
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ELECTRICAL SYSTEM 6 - 7 STARTER REM
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ELECTRICAL SYSTEM 6 - 9 The generat
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ELECTRICAL SYSTEM 6 - 11 6. Remove
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ELECTRICAL SYSTEM 6 - 13
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ELECTRICAL SYSTEM 6 - 15 BRUSH REPL
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ELECTRICAL SYSTEM 6 - 17 GENERATOR
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ELECTRICAL SYSTEM 6 - 19 3. Run eng
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ELECTRICAL SYSTEM 6 - 21 screw (D)
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ELECTRICAL SYSTEM 6 - 23 Installati
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ELECTRICAL SYSTEM 6 - 25 FIGURE 23
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ELECTRICAL SYSTEM 6 - 27 FIGURE 26
Page 165 and 166: ELECTRICAL SYSTEM 6 - 29 Weather Co
Page 167 and 168: ELECTRICAL SYSTEM 6 - 31 6. If swit
Page 169 and 170: CLUTCH 7 - 1 Driving Plate Diameter
Page 171 and 172: CLUTCH 7 - 3 DRAIN AND REFILL CLUTC
Page 173 and 174: CLUTCH 7 - 5 2. Loosen the propelle
Page 175 and 176: CLUTCH 7 - 7 ENGAGING SPRINGS If cl
Page 177 and 178: CLUTCH 7 - 9 3. Tighten the cap scr
Page 179 and 180: TRANSMISSION 8 - 1 SECTION 8 TRANSM
Page 181 and 182: TRANSMISSION 8 - 3 1. Gear Pilot Be
Page 183 and 184: TRANSMISSION 8 - 5 3. Remove govern
Page 185 and 186: TRANSMISSION 8 - 7 washer, and two
Page 187 and 188: TRANSMISSION 8 - 9 open, clean and
Page 189 and 190: TRANSMISSION 8 - 11 towards gear th
Page 191 and 192: TRANSMISSION 8 - 13 2. Place second
Page 193 and 194: TRANSMISSION 8 - 15 Worn, rough mai
Page 195 and 196: TRANSMISSION 8 - 17 NOTE: Check shi
Page 197 and 198: TRANSMISSION 8 - 19 SECTION 8 TRANS
Page 199 and 200: TRANSMISSION 8 - 21 1. Synchronizer
Page 201 and 202: TRANSMISSION 8 - 23 8. Make a dummy
Page 203 and 204: TRANSMISSION 8 - 25 center of the c
Page 205 and 206: TRANSMISSION 8 - 27 case, entering
Page 207 and 208: TRANSMISSION 8 - 29 REMOVAL AND Ins
Page 209 and 210: OVERDRIVE 9 - 1
Page 211 and 212: OVERDRIVE 9 - 3 NOTE: Unless otherw
Page 213 and 214: OVERDRIVE 9 - 5 speed of the latter
Page 215: FIGURE 10 OVERDRIVE 9 - 7
Page 219 and 220: OVERDRIVE 9 - 11 4. Remove the reta
Page 221 and 222: OVERDRIVE 9 - 13 Installation OF AD
Page 223 and 224: OVERDRIVE 9 - 15 3. Install the rin
Page 225 and 226: OVERDRIVE 9 - 17 8. Remove the gove
Page 227 and 228: OVERDRIVE 9 - 19 8. Install synchro
Page 229 and 230: OVERDRIVE 9 - 21 NOTE: Assemble syn
Page 231 and 232: OVERDRIVE 9 - 23 UNIT CHECKS OVERDR
Page 233 and 234: OVERDRIVE 9 - 25 4. Connect test la
Page 235 and 236: OVERDRIVE 9 - 27 ELECTRICAL CONDITI
Page 237 and 238: OVERDRIVE 9 - 29 B. Occasionally, t
Page 239 and 240: PROPELLER SHAFT 10 - 1 Front Shaft
Page 241 and 242: PROPELLER SHAFT 10 - 3 5. Tap on th
Page 243 and 244: REAR AXLE 11 - 1 SECTION 11 REAR AX
Page 245 and 246: REAR AXLE 11 - 3 FIGURE 2 31. Diffe
Page 247 and 248: REAR AXLE 11 - 5 8. Loosen nuts (1)
Page 249 and 250: REAR AXLE 11 - 7 3. Place the head
Page 251 and 252: REAR AXLE 11 - 9 3. Remove the thre
Page 253 and 254: REAR AXLE 11 - 11 FIGURE 24 2. Plac
Page 255 and 256: REAR AXLE 11 - 13 6. Install bearin
Page 257 and 258: REAR AXLE 11 - 15 9. Place axle sha
Page 259 and 260: REAR AXLE 11 - 17 DESCRIPTION This
Page 261 and 262: REAR AXLE 11 - 19 FIGURE 36 LEGEND
Page 263 and 264: REAR AXLE 11 - 21 4. Remove bolt s
Page 265 and 266: REAR AXLE 11 - 23 5. If drive gear
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REAR AXLE 11 - 25 18. If the microm
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FRONT SUSPENSION 12 - 1 Curb height
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FRONT SUSPENSION 12 - 3 FIGURE 2 1.
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FRONT SUSPENSION 12 - 5 LOWER SUPPO
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FRONT SUSPENSION 12 -7 plus not mor
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FRONT SUSPENSION 12 - 9 the relief
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FRONT SUSPENSION 12 - 11 Figure 17,
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FRONT SUSPENSION 12 - 13 CAUSE: EXC
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FRONT SUSPENSION 12 - 15 NOTE: Whee
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FRONT SUSPENSION 12 - 17 PITMAN ARM
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STEERING GEAR 13 - 1 Type Ratios -
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STEERING GEAR 13 - 3 FIGURE 1 Steer
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STEERING GEAR 13 - 5 5. Apply a sma
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STEERING GEAR 13 - 7 install worm a
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STEERING GEAR 13 - 9 FIGURE 8 ADJUS
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STEERING GEAR 13 - 11 5. Tighten ro
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SPRINGS, SHOCK ABSORBERS, & STABILI
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BRAKES 15 - 1 SECTION 15 BRAKES SPE
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BRAKES 15 - 3 It is necessary that
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BRAKES 15 - 5 WHEEL CYLINDERS (FRON
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BRAKES 15 - 7 DISASSEMBLING REAR BR
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BRAKES 15 - 9 To adjust; remove the
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BRAKES 15 - 11 Check parking brake
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BRAKES 15 - 13 NOTE: To reduce the
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BRAKES 15 - 15 Remedy - 1. Replace
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WHEELS AND TIRES 16 - 1 Tire Size 7
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WHEELS AND TIRES 16 - 3 then anothe
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WHEELS AND TIRES 16 - 5 Stand wheel
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DECIMAL EQUIVALENTS 64ths 32nds 16t
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1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club

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