Hudson 1948 - 1952 User manual

HUDSON
SHOP
SERVICE
MANUAL
1948 - 1952

This manual courtesy of
Hudson-Essex-Terraplane Club member
Drew Meyer

FORWARD
The information contained herein is to be used as a
guide and reference for servicing Hudson Motor Cars.
A group index and an alphabetical index is placed in
the front of the manual for easy reference and each
section is self-contained.
The procedures outlined herein are derived from the
procedures established in preparing flat rate time
schedules.
A thorough study of the operations necessary tools
and equipment will enable the Hudson Service dealer
to perform reliable service at reasonable cost.
Special tools that have been developed are shown in
their respective positions.
New Tools are developed only when it is found to be
essential to good workmanship and the time saving is
sufficient to warrant the cost of manufacturing.
Tools are developed in conjunction with the Kent
Moore Organization and are sold by them direct to
Hudson Distributors and Dealers.
GROUP INDEX
SECTION SECTION
1. LUBRICATION
2. ENGINE TUNE-UP
3. ENGINE
4. FUEL
5. COOLING
6. ELECTRICAL
7. CLUTCH
8. TRANSMISSION
9. OVER-DRIVE
10. PROPELLER SHAFT
11.REARAXLE
12. FRONT SUSPENSION
13.STEERINGGEAR
14. SPRINGS , SHOCK ABSORBERS, AND
STABILIZERS
15.BRAKES
16.WHEELSANDTIRES
I

II
ALPHABETICAL INDEX
Group Page Group Page
15 BRAKES
Bleeding Lines
Brake Disassembly
Front
Rear
Brake Fluid
Brake Pedal
Adjustment
Installation
Push Rod Adjustment
Removal
Cable Adjustment
Rear Brake Cable - Removal
Description and Construction
Hand Brake
Adjustment
Lubrication
Major Brake Adjustment
Trouble Shooting
Master Cylinder
Removal
Repair
Mechanical Brakes
Minor Brake Adjustment
Specifications
Wheel Cylinders:
Front
Rear
7 CLUTCH
Bell Housing
Clutch Removal from Car
Double Lever Type Transmission
Single Lever Type Transmission
Construction
Cover
Disassembly - Clutch
Draining Clutch
Engaging Spring
Flushing
Inspection - Clutch
Installation
Pedal Adjustment
Pedal Lever - Removal
Pilot Bearing
Pressure Plate
Rear Support Plate
Reassembly
Refilling Clutch
Retainers and Washers
Specifications
Throwout Bearing and Seals
Throwout Fingers
Trouble Shooting
5 COOLING SYSTEM
Anti-Freeze Chart
Anti-Freeze Solution
15-7
15-6
15-6
15-7
15-8
15-8
15-8
15-9
15-10
15-9
15-10
15-10
15-1
15-1
15-8
15-10
15-11
15-14
15-1
15-3
15-4
15-1
15-10
15-1
15-5
15-5
7-8
7-3
7-4
7-3
7-1
7-7
7-5
7-3
7-7
7-3
7-5
7-9
7-1
7-10
7-8
7-6
7-8
7-8
7-3
7-7
7-1
7-7
7-7
7-10
5-1
5-3
5 COOLING SYSTEM - Continued
Cooling System Diagnosis
Description and Operation
Diagnosis
Draining System
Fan Belt Adjustment
Flushing
Inhibitor
Operation
Radiator Removal
Reverse Flushing
Rust and Scale Deposits
Specifications
Temperature Gauge
Thermostats
Water Pump (6-Cylinder)
Assembly
Disassembly
Inspection
Installation
Water Pump (8-Cylinder)
Assembly
Disassembly
Inspection
Water Temperature Gauge
6 ELECTRICAL SYSTEM
Battery
Battery Cable Check
Battery Test
Bendix Drive
Circuit Breakers and Fuses
Coil
Condenser
Dimmer Switch
Direction Indicator Flasher
Direction Indicator Switch
Electrical Check
Installation
Mechanical Check
Removal
Distributor
Assembly, 6 and 8 Cylinder
Breaker Point Adjustment
Breaker Point Renewal
Distributor Removal
Disassembly
Installation
Electrical System
Generator
Armature Commutator Repair
Armature Ground Test
Armature Shaft End Play
Armature Short Circuit Test
Brush Holders
Brush Replacement
Disassembly
Field Coil
5-10
5-2
5-2
5-2
5-8
5-2
5-3
5-2
5-10
5-2
5-2
5-1
5-9
5-8
5-4
5-6
5-4
5-6
5-8
5-8
5-8
5-8
5-6
5-9
6-4
6-5
6-4
6-8
6-29
6-26
6-25
6-28
6-31
6-30
6-30
6-31
6-30
6-31
6-20
6-22
6-20
6-21
6-21
6-21
6-23
6-4
6-8
6-14
6-14
6-15
6-14
6-14
6-15
6-11

III
ALPHABETICAL INDEX - CONTINUED
Group Page Group Page
6 ELECTRICAL SYSTEM - Continued
Generator - Continued
Ground Tests
Open Circuit Test
Removal
Replacement
Short Circuit Test
Generator Assembly
Generator Circuit Resistance
Generator Motorizing Draw
Generator Regulator
Circuit Breaker Adjustment
Circuit Breaker Check
Current Regulator Adjustment
Current Regulator Check
Voltage Regulator Adjustment.
Voltage Regulator Check
Generator Total Output Check
Wiring Check
Headlamps
Headlamp Aiming
Sealed Beam Unit
Horns
Ignition Timing
Sealed Beam Unit
Replacement
Spark Plugs
Specifications
Starting Motor
Amperage Draw Test
Cranking Voltage Test
Disassembly
Starter Removal
Starter Solenoid Test
Starter Overhaul
Armature
Assembly
Brushes
Disassembly
Field Coils
Installation
Timing
Wiring Diagram
3 ENGINE
Camshaft (8 Cylinder)
Camshaft (6 Cylinder)
Camshaft Bearings (6 & 8 Cylinder).
Connecting Rod Bushings
(6 & 8 Cylinder)
Connecting Rods (6 Cylinder)
Connecting Rods (8 Cylinder)
Connecting Rod Alignment
Crankshaft
Removal
Cylinder-Head (6 & 8 Cylinder)
Installation
Removal
6-11
6-11
6-11
6-14
6-11
6-15
6-17
6-17
6-17
6-18
6-18
6-19
6-19
6-19
6-18
6-9
6-9
6-26
6-28
6-27
6-29
6-23
6-27
6-27
6-24
6-1
6-5
6-6
6-5
6-7
6-6
6-6
6-7
6-7
6-8
6-8
6-7
6-7
6-8
6-23
6-12
3-35
3-37
3-35
3-24
3-25
3-25
3-26
3-27
3-27
3-12
3-12
3-12
6 ENGINE - Continued
Cylinder Honing
Engine Removal (8 Cylinder)
Engine Removal (6 Cylinder)
Engine Support Plate (Front)
Lubrication (8 Cylinder)
Lubrication (6 Cylinder)
Main Bearings (6 Cylinder)
Installation
Removal
Main Bearing Cap (Rear)
Installation
Main Bearings (8 Cylinder)
Installation
Removal
Main Bearing Size Code
Oil Check Valve (8 Cylinder)
Removal
Oil Check Valve (6 Cylinder)
Oil Pan (8 Cylinder)
Installation
Inspection
Removal
Oil Pan (6 Cylinder)
Installation
Inspection
Removal
Oil Pump (8 Cylinder)
Disassembly
Installation
Reassembly
Removal
Oil Pump (6 Cylinder)
Assembly
Disassembly
Inspection
Installation
Removal
Pistons, Pins and Rings
Removal
Piston Fitting
Piston Size Code (8 Cylinder)
Piston Size Code (6 Cylinder)
Piston Pins 3-19,
Piston Rings
Rod and Piston Installation
Rod and Piston Removal
Specifications
Tappets and Guides
Timing Gears
Installation
Removal
Timing Chain
Timing Cover Oil Seal Replacement
Timing Gear Cover Removal
Installation
Valve Guides
Valve Systems (6 & 8 Cylinder)
3-44
3-17
3-17
3-33
3-5
3-5
3-13
3-13
3-13
3-14
3-14
3-17
3-16
3-15
3-16
3-5
3-6
3-6
3-9
3-11
3-11
3-9
3-11
3-12
3-11
3-11
3-6
3-6
3-7
3-7
3-6
3-7
3-8
3-7
3-8
3-8
3-7
3-19
3-19
3-22
3-20
3-21
3-20
3-27
3-19
3-1
3-38
3-31
3-33
3-32
3-31
3-31
3-32
3-40
3-38
3-19, 3-23
3-32, 3-37

IV
ALPHABETICAL INDEX - CONTINUED
Group Page Group Page
3 ENGINE - Continued
Valves and Seats
Valve Springs
Valve Timing
Valve Timing Check
Valve Maintenance
Vibration Dampener
2 ENGINE TUNE-UP
Air Cleaner
Amperage Draw
Anti-Percolator Adjustment
Automatic Advance
Battery
Cell Test
Load Test
Specific Gravity
Battery Cables
Breaker Arm Spring Tension
Carburetor:
Anti-PercolatorAdjustment
Climatic Control Adjustment
Fast Idle Adjustment
Float Level Adjustment
Idle Adjustment
Inlet Strainers
Metering Rod Adjustment
Pump Travel Adjustment
Unloader Adjustment
Carburetor Float Check
Carburetor Strainer Check
Coil Secondary Test
Coil Test
Climatic Control
Compression
Combustion Analysis
Condenser Test
Current Regulator Check
Cylinder Balance Test
Distributor
Adjustment
Automatic Advance
CamAngle
Condenser Test
Contact Points
Dwell Test
Point Resistance
Timing
Vacuum Advance
Fan Belt Adjustment
Fast Idle Adjustment
Fuel Pump Test
Generator:
Circuit Resistance
Fan Belt Adjustment
Output Check
IdleAdjustment
3-38
3-41
3-42
3-42
3-30
2 -21
2 -4
2 -19
2 -11
2 -2
2 -3
2 -2
2 -2
2 -4
2 -8
2 -19
2 -18
2 -20
2 -18
2 -21
2 -18
2 -19
2 -18
2 -21
2 -18
2 -18
2 -12
2 -12
2 -18
2 -5
2 -21
2 -10
2 -16
2 -5
2 -8
2 -8
2 -11
2 -9
2 -10
2 -8
2 -9
2 -9
2 -14
2 -11
2 -14
2 -20
2 -17
2 -15
2 -14
2 -14
2 -21
2 ENGINE TUNE-UP - Continued
Ignition Timing
Manifold Heat Control
Metering Rod Setting
Milliampere Test
Point Resistance
Pump Travel
Spark Plugs
Spark Plug Test
Specifications
Starter Motor
Amperage Draw Test
Battery Cables Check
Cranking Voltage
Solenoid Test
Starter Solenoid
Tappet Adjustment
Tune-Up
Unloader Adjustment
Vacuum Advance
Vacuum Booster Check
Vacuum Test
Valves and Tappets
Voltage Regulator
Circuit Breaker Check
Current Regulator Check
Voltage Regulator Check
12 FRONT SUSPENSION
Center Steering Arm
Center Steering Arm Alignment
Coil Spring Sag
Construction
Diagnosis Guide
Eccentric Bushing
Front Suspension
Installation
Removal
Front Wheel Alignment
Camber
Caster
Curb Height
Pivot Pin Inclination
Toe-In
General Inspection
Lower Support Arm Pivot and Bushing .
Lubrication
Pitman Arm Angle
Pivot Pin
Relief Valve
Riding Height and Coil Spring Sag
Specifications
Steering Arm
Steering Pivot Pin Wear
Steering Spindle 12 -1,
Steering Spindle Lower Pivot
andBushing
2 -13
2 -17
2 -19
2 -13
2 -8
2 -18
2 -6
2 -13
2 -1
2 -3
2 -4
2 -4
2 -3
2 -4
2 -4
2 -7
2 -2
2 -21
2 -11
2 -17
2 -6
2 -7
2 -15
2 -15
2 -16
2 -16
12 -10
12 -17
12 -4
12 -1
12 -2
12 -7
12 -2
12 -3
12 -2
12 -15
12 -15
12 -15
12 -16
12 -16
12 -16
12 -15
12 -5
12 -1
12 -17
12 -8
12 -8
12 -4
12 -1
12 -10
12 -8
12 -5
3-17, 3-42
12 -1, 12 -9

V
ALPHABETICAL INDEX - CONTINUED
Group Page Group Page
12 FRONT SUSPENSION - Continued
Steering Spindle Pivot Bolt Expansion
Plug & Relief Valve
Steering Spindle Support and Thrust
Ball Cup
Steering Spindle Support
Straighten Bent Parts of Front
Suspension
Tie Rod
Tie Rod Ends
Turning Pull
Upper Steering Spindle Support Pivot
and Bushing
Upper Support Arm Pivot
4 FUEL SYSTEM
Air Cleaner, Dry
Air Cleaner, Oil Bath
Carburetor - WA1:
Accelerating Pump
Adjustments
Anti-Percolator Adjustment
Anti-Percolator Valve
Assembly
Climatic Control
Disassembly
Fast Idle
Fast Idle Adjustment
Idle Adjustment
Installation
Metering Rod Setting
Pump Travel
Removal
Specifications
Unloader Adjustment
Carburetor - WGD:
Adjustments
Assembly
Disassembly
Fast Idle Adjustment
Float Adjustment
Idle Adjustment
Installation
Metering Rod Adjustment
Pump Travel Adjustment
Removal
Specifications
Unloader Adjustment
Carburetor - Twin:
Adjustments
Installation
Exhaust Manifold (8 Cylinder)
Front Exhaust Pipe (6 Cylinder)
Front Exhaust Pipe (8 Cylinder)
Fuel Level Gauge
Fuel Level Indicator
Gasket Tank Unit
Gauge Testing Equipment
12 -8
12 -9
12 -10
12 -11
12 -11
12 -11
12 -11
12 -6
12 -5
4-31
4-31
4-5
4-5
4-6
4-4
4-10
4-4
4-8
4-5
4-7
4-7
4-6
4-5
4-7
4-7
4-16
4-20
4-18
4-17
4-16
4-17
4-26
4-16
4-16
4-17
4-15
4-17
4-30
4-27
4-40
4-42
4-42
4-38
4-38
4-39
4-39
4 FUEL SYSTEM - Continued
Fuel Level Gauge - Continued
Gauge Trouble Diagnosis
Method of Checking
Panel Indicator Check
Voltage Regulator
Fuel Pump
Pump Assembly (AC)
Pump Assembly (Carter)
Pump Disassembly (AC)
Pump Disassembly (Carter)
Pump Overhaul
Pump Test
Inspection
Removal (8 Cylinder)
Removal (6 Cylinder)
Vacuum Booster Test
Gasoline Tank
Heat Control Valve
Intake Manifold (8 Cylinder)
Twin Carburetor:
Adjustment
Installation
1 LUBRICATION
Break-In Oil
Capacities
Checking Engine Oil Level
Crankcase Ventilator
Dilution
Engine Oil
Engine Oil Capacities
Engine Oil Level
Engine Oiling Circuit
Lubrication Schedules
Oil Dilution
Oil Change
Oiling Circuit (6 Cylinder)
Oil Filters
Oil Level
Proper Engine Oil To Use
Types of Oil
Heavy-Duty Motor Oil
Premium Motor Oil
Regular Motor Oil
Ventilator
Water Resistant Lubricant
When to Change Engine Oil
9 OVERDRIVE
Control Switch
Governor Switch and Pinion
Oil Seal (OD Control Shaft)
Oil Seal (OD Mainshaft)
Operation, Electrical
Lockout
Driver Control
Speed Control
4-39
4-39
4-39
4-38
4-31
4-36
4-34
4-34
4-32
4-32
4-32
4-36
4-32
4-32
4-32
4-39
4-41
4-40
4-30
4-27
1 - 6
1 - 10
1 - 8
1 - 10
1 - 10
1 - 5, 1 -9
1 - 8
1 - 8
1 - 7
1 - 1
1 - 10
1 - 9
1 - 7
1 - 6
1 - 8
1 - 9
1 - 9
1 - 9
1 - 9
1 - 9
1 - 10
1 - 5
1 - 9
9-9
9-9
9-9
9-9
9-6
9-8
9-8
9-6
4-10, 4-26
4-1, 4-15

VI
ALPHABETICAL INDEX - CONTINUED
Group Page Group Page
9OVERDRIVE - Continued
Operation, Electrical - Continued
Wiring Diagram
Operation, Mechanical
City Traffic
Downshift - Kick Down
Free Wheeling
Highway Driving
Overdrive Adapter
Disassembly
Assembly
Overdrive Housing
Installation
Removal
Removal of Parts from Rear of Adapter.
Disassembly
Interlock Plunger
Overdrive Mainshaft
Pinion Cage Assembly
Sun Gear
Shift Rail
Solenoid
Assembly
Cleaning and Inspection
Servicing External Units
Servicing Units Requiring Removal of
Overdrive Housing Only
Servicing Units that Require Removal
of Complete Assembly
Single Lever Type
Assembly
Disassembly
Inspection
Installation
Removal
Double Lever Type
Assembly
Disassembly
Inspection
Installation
Removal
Shift Rail (Single Lever Type)
Shift Rail (Double Lever Type)
Trouble Shooting, Electrical
Trouble Shooting, Mechanical
Unit Checks:
Governor Check
Connector Plug Check
Control Switch Check
kickdown Switch Check
Harness Check
Relay Check
Solenoid Check
Wiring Diagram
10 PROPELLER SHAFT
Center Bearing Replacement
Center Bearing Support Cushions
9-17
9-14
9-13
9-15
9-14
9-13
9-17
9-19
9-15
9-9
9-10
9-10
9-10
9-10
9-11
9-11
9-11
9-13
9-12
9-8
9-9
9-15
9-15
9-19
9-17
9-12
9-22
9-15
9-16
9-22
9-17
9-12
9-22
9-16
9-12
9-13
9-124
9-27
9-23
9-24
9-24
9-24
9-24
9-23
9-23
9-7
10-4
10 PROPELLER SHAFT - Continued
Construction
Removal and Installation
Specifications
Support Cushions Identification
Trouble Shooting
Universal joints
Axle Installation
Axle Shaft:
Removal
Installation
Description
Differential Assembly:
Assembly
Back-lash Checking
Disassembly
Installation
Removal
Runout Checking
Drive Pinion:
Installation
Pinion Checking Gauge
Removal
Inspection
Lubrication
Removal of Axle
Shims
Specifications
11 REAR AXLE (WELDED COVER TYPE)
Assembly
Axle Noise
Axle Shaft
Installation
Removal
Axle Shaft Thrust Button
Construction
Differential .
Differential Carrier
Disassembly
Assembly
Inspection
Differential Gears
Disassembly
Drive Pinion
Installation
Removal
Drive Pinion Oil Seal
Inspection
Installation
Removal
Lubrications
Maintenance
Oil Seals:
Axle Shaft
Pinion Shaft
Wheel Bearing
10-2
10-2
10-1
10-4
10-4
10-3
11-26
11-20
11-26
11-17
11-23
11-26
11-21
11-23
11-20
11-20
11-24
11-23
11-22
11-22
11-17
11-20
11-17
11-17
11-4
11-16
11-14
11-5
11-7
11-1
11-12
11-7
11-7
11-12
11-10
11-8
11-5
11-9
11-10
11-9
11-8
11-10
11-11
11-8
11-15
11-16
11-7
9,11, 9-12
9,11, 9-12
11 REAR AXLE (REMOVABLE COVER TYPE)
11-5, 11-14
11-7, 11-15
11-8, 11-9

VII
ALPHABETICAL INDEX - CONTINUED
Group Page Group Page
11 REAR AXLE (WELDED COVER TYPE) - Cont'd.
Ratios
Installation
Removal
Specifications
14 SPRINGS, SHOCK ABSORBERS & STABILIZERS
Front Coil Springs
Installation
Removal
Front Lateral Stabilizer
Removal
Lubrication
Rear Lateral Stabilizer
Riding Height and Coil Spring Sag
Rear Springs
Assembly
Installation
Rear Spring Shackle Identification .
Shock Absorbers
Specifications
13 STEERING GEAR
Adjustments
Steering Gear
Worm Bearing
Center Steering Arm
Installation
Removal
Construction
Drag Link
Adjustment
Installation
Removal
Gear Shaft
Horn Ring:
Installation
Removal
Jacket Tube and Bearing
Lubrication
Pitman Arm:
Installation
Removal
Specifications
Steering Gear:
Adjustments
Disassembly
Inspection
Installation
Removal
Steering Gear Alignment
Steering Wheel
Installation
Removal
Trouble Diagnosis
8 TRANSMISSION (MANUAL TYPE-SINGLE
SHIFT LEVER)
Cover Baffle
Disassembly
Gear Shift
Gear Shift Control Lever Push Rod
11-1
11-15
11-4
11-1
14-2
14-2
14-2
14-6
14-6
14-5
14-7
14-2
14-3
14-3
14-4
14-4
14-5
14-1
13-9
13-9
13-10
13-11
13-11
13-11
13-1
13-8
13-9
13-8
13-8
13-8
13-2
13-2
13-5
13-2
13-8
13-7
13-1
13-9
13-6
13-9
13-7
13-6
13-10
13-2
13-2
13-2
12 -12
8-9
8-17
8-18
8 TRANSMISSION (MANUAL TYPE-SINGLE
SHIFT LEVER) - Continued
Inspection and Repair
Installing Transmission
Lubrication
Reassembly
Assembly of Synchronizer
Countershaft
Countershaft Gear Cluster
Main Drive Gear
Main Shaft Assembly
Reverse Idler Gear and Gear
Cluster
Selector and Shift Shaft Levers
Shifter Rails and Forks
Reverse Idler Gear
Selector and Shift Shafts
Specifications
Speedometer Gear Housing Seal
Transmission Ball Bearings
Transmission Case Breather
Transmission Removal from Car
Trouble Shooting, Servicing the
Transmission
Construction
Countershaft Gear Cluster
Countershaft Installation
Disassembly
Drive Gear Bearing Retainer
Inspection
Mainshaft Assembly
Mainshaft Drive Gear Assembly
Mainshaft Rear Bearing Retainer
Removal & Installation of Handy-Shift
Control Tube & Fulcrum Bracket
Assembly and Adjustment
Reverse Idler Gear
Shift Shafts & Interlock
Specifications
Transmission Installation
Transmission Reassembly
Transmission Removal
16 WHEELS AND TIRES
Balancing the Wheel and Tire
Brakes
Decimal Equivalents
Dismounting Tires
Front Wheel Bearing Adjustment
Minimizing Tire Wear
Mounting Tires
Specifications
Tightening Wheel Hub Bolts
Tire Inflation
Tire Wear
Wheel Bearings
Wheel and Tire Balance
Wheel and Tire Run-Out
8-8
8-13
8-4
8-10
8-11
8-12
8-9
8-11
8-11
8-10
8-10
8-12
8-10
8-10
8-1
8-10
8-9
8-8
8-4
8-14
8-19
8-25
8-26
8-22
8-27
8-24
8-26
8-26
8-27
8-29
8-26
8-25
8-19
8-27
8-25
8-22
16-1
16-4
16-6
16-4
16-4
16-3
16-5
10-1
16-5
16-3
16-3
16-4
16-1
16-4
8-4, 8-8
8 TRANSMISSION (MANUAL TYPE-DOUBLE
SHIFT LEVER)

VIII

LUBRICATION 1 - 1
SECTION 1
LUBRICATION
The present day high speed driving, fast acceleration,
and precision fitted engine parts have placed engine and
chassis lubrication in the category of highly specialized
services.
A definite plan of application is necessary to provide
the various working surfaces with the right amount of the
correct lubricant at the proper time.
Contrary to general belief, one type of lubricant will not
suffice to all applications.
Varying load demands and operating conditions call for
different types of lubricants.
Authorized Hudson Dealers have been provided with a
Lubrication Chart covering correct factory lubrication
speci
specifications, and a definite plan of application. Observance
of this chart and its requirements will be definite assurance
of customer satisfaction and goodwill.
A copy of the Lubrication Chart is also included in this
manual. Additional helpful information regarding the lubri-
cation requirements are given in the Lubrication Schedules
and the following paragraphs.
NOTE: The lubricants used at the time of assembly are of
the best quality and need not be changed until the recom-
mended change period shown in the Lubrication Schedule.
LUBRICATION SCHEDULES
500 Miles
Drain the original engine oil at 500 miles and refill with a good grade of oil of the viscosity rating shown in the
temperature and viscosity illustration, Figure 3, Page 6. For engine oil capacities of six and eight cylinder engines refer to
Figure 1 - -Lubrication Chart and Capacities-- Page 10.
1,000 Miles
Viscous Chassis Lubricant
Points
Drag Link 2
Upper Support Arm Eccentric Bushing. 2
Upper Support Arm Pivot Bushing 4
Lower Support Arm Pivot Bushing. 4
Lower Support Arm Support Bushing 2
Center Steering Arm Pivot Bearing 1
Tie Rod End 4
Points
Steering Spindle Pivot Pins 2
Gear Shift Bell Crank Pivot 1
Clutch Pedal Bearing 1
Clutch Throwout Bearing 1
Universal Joint Spline 1
Rear Spring Shackle Bushing 4
Engine Oil
Points
Engine Check Oil Level
Door Hinge 4 or 8
Gasoline Tank Filler Door Hinge
and Spring 3
Points
Rear Compartment Door Striker 4
Rear Compartment Latch Rod 2
Hood Hinge 8
Windshield Wiper Pulleys 4

1 - 2 LUBRICATION
FIGURE 1

LUBRICATION 1 - 3

1 - 4 LUBRICATION

LUBRICATION 1 - 5
WATER RESISTANT LUBRICANT
Windshield Cables at Pulleys
Door Check Arms
Courtesy Light Switch
Door Lock Bolt and Slide
Door Striker
Rear Compartment Door Hinge
Points
4
2 or 4
2 or 4
2 or 4
2 or 4
2
Rear Compartment Door Latch and
Striker
Hood Prop
Hood Upper Lock
Hood Lower Lock
Hood Lower Lock and Control Wire
Points
2
2
1
1
2
GEAR LUBRICANT
Transmission
Overdrive Check Level
Steering Gear Check Level
Rear Axle Check Level
Multi -Purpose Gear Lubricant-S.A.E. 90
Universal Joint Needle Rollers - 3 Points
Gear Oil - S.A.E. 140
Check Battery Electrolyte level and gravity.
Water or Anti-Freeze
Check Coolant Level and Anti-Freeze strength.
Hudson Hydraulic Brake Fluid
Check Brake Master Cylinder fluid level.
Hydra-Matic Transmission - Check Level
2,000 Miles
Perform operations included in 1,000 mile lubrication, in
addition to the following: FIGURE 3
Hydra-Matic transmission fluid level should be checked when a chassis lubrication is being performed.
The procedure for checking fluid level is included on pages 41 and 42 in Hydra-Matic Section No. 11.
Engine Oil
Engine
Generator
Distributor
Air Cleaner - Standard
Air Cleaner - Oil Bath
Throttle Operating Linkage
Oil Filler Pipe Cap
Brake Operating Linkage
Hydra-Matic Linkage
Drain Oil and Refill
2 Points
4 Points
Wash and re-oil
Clean and add new oil
All Joints
Wash and re-oil
All Joints
Lubricate using light engine oil
S.A.E. 80 Winter
S.A.E. 90 Summer
Check Level
Check Level
Check Level
Check Level

1 - 6 LUBRICATION
5,000 Miles
Perform operations included in 1,000 mile and 2,000 mile lubrications, in addition to the following:
Hudsonite Clutch Compound
Clutch Drain and Refill
E.P. Gear Lubricant--S.A.E. 80 Winter, S.A.E. 90 Summer
Transmission Drain and Refill Overdrive Drain and Refill
Multi-Purpose Gear Lubricant--S.A.E. 90
Rear Axle Drain and Refill
Viscous Chassis Lubricant
Brake Cables Clean and Lubricate Oil Filter Renew Cartridge
10,000 Miles
Perform operations included in 1,000 mile, 2,000 mile, and 5,000 mile lubrications, in addition to the following:
Hydra-Matic Oil Level Indicator
Air cleaner in oil level indicator cap should be cleaned every 10,000 miles or twice a year.
Viscous Chassis Lubricant
Rear Spring Covers Inject lubricant with special lubricating clamp
Sodium Soap Base Lubricant
Front Wheel Bearings Remove, Clean, and Repack
Rear Wheel Bearings Remove, Clean, and Repack
15,000 Miles
Hydra - Ma t i c transmission fluid should be changed every 15,000 miles, instructions for draining and refilling are
shown on Pages 55 and 56 of the Hydra-Matic Manual.
IMPORTANT: When checking the level of the lubricant in rear axles and transmissions, make sure that the lubricant
has stopped foaming. When car has been run for a considerable length of time, it should be permitted to stand long
enough to allow the oil to reach the true level before checking.
OIL FILTERS
On cars equipped with oil filters the cartridge should be replaced
at 5,000 mile intervals or when the oil shows evidence of becoming
dirty.Whenreplacing thecartridge, besureto use anew covergasket
andseethatitseats properly to preventoil leaks.
BREAK-IN OIL
If a tune-up oil or break-in oil is used make sure it is made by
a reputable manufacturer, who will guarantee his product as
containing no harmful ingredients.

LUBRICATION 1 - 7
ENGINE OILING CIRCUIT
8 CYLINDER
Engine lubrication is by the Duo-Flow system which
delivers oil in direct ratio to engine speed to bearing surfaces
immediately from the first turn of the crankshaft. The oil is
drawn from the oil pan by the double acting oscillating
plunger type pump driven by the camshaft.
The oil is drawn from the sump and forced through oil
lines to the front and rear of the engine where it is delivered
to the front and rear troughs in the oil pan upper tray.
The oil is then picked up by the connecting rod dippers
and distributed to the interior working surfaces through
splash and a system of channels which convey it into wells
over the crankshaft and camshaft bearings and timing gear
compartment. Overflow oil running down the crankcase
walls is diverted by drains in the oil pan tray into adjacent
splash troughs until it reaches the center of the engine.
At this point, it is returned through the opening in the
tray, then to the main oil supply where it is cooled and
screened before again being used. The new design oil pan
with sump at rear is provided with a floating type screened
intake. This permits only the cleanest oil to be drawn off by
the pump.
Both rear and front main bearing caps are packed to
prevent oil leakage and a large oil retainer collects oil from
the outside of the rear main bearing and returns it to the oil
pan. The oil return tube leading from the rear main bearing
to oil pan has a floating disc or "flapper valve", pinned on
the lower end to prevent any loss of oil on extreme grades
or on quick stops.
An oil check valve is mounted at the rear right side of
crankcase, through which the oil from rear lead pipe of oil
pump flows and controls a light on the instrument panel. A
spring loaded, movable cup shaped plunger lies in the path
of the oil flow. When oil pressure is too low, the plunger
completes an electric circuit and lights the red dash signal.
oil pres
Normal oil pressure causes the plunger to recede and the
circuit is broken.
FIGURE 4
OILING CIRCUIT
6 CYLINDER
Full pressure lubrication to bearings of the engine is
maintained by a rotor type oil pump mounted on the right
side of lower crankcase and driven from a worm gear on the
camshaft. Oil is drawn by the suction side of the pump
through a pipe connecting with a floating screen in the
sump, Figure 4.
The oil pump parts consist of an inner and outer rotor, a
shaft, and the body and cover. Outstanding characteristics
of the pump are longer life and high pressure maintained at
low speeds.
Oil pressure is regulated by a built-in nonadjustable re-
lease valve and spring accessible through a plug at the left
rear side of the engine.

1 - 8 LUBRICATION
When starting the engine the release valve has moved to a
position that closes the oil passageway to the oil filter and
allows full pump flow direct through the main oil gallery
extending the full length of the crankcase. This oil gallery is
intersected by drilled leads to main and camshaft bearings
and valve lifters.
Oil pressure is supplied to the connecting rod bearings
through the drilled crankshaft.
The angular hole drilled through the upper half of the
connecting rod bearing shell seat is for the purpose of lubri-
cating the cylinder walls. A tube fitted in the front end of
main oil gallery directs a small pressure stream of oil at the
point where chain meshes with crankshaft sprocket. Re-
turned oil flows over the wide shallow portion of the oil pan
where it is cooled before reaching the sump.
The oil measuring gauge seats on a tube pressed in the
crankcase at left rear side. A sealed pressure type oil signal
switch mounted just above the oil pump and connected with
the main oil gallery, is wired to the dash oil signal light.
Should oil pressure drop below approximately 13 pounds,
the circuit is completed and lights the red dash oil pressure
signal. Capacity of the oil pan is 7 quarts for refill and 7-1/2
quarts when pan is removed for cleaning.
The total engine oil capacity is 7-1/2 quarts for six
cylinder and 8 quarts for eight cylinder engines. When the
oil is drained in the conventional manner, the refilling quan-
tity is 7 quarts for both six and eight cylinder engines.
When the oil pan is removed for cleaning or during
service work, two quarts should be placed in the oil pan tray
of eight cylinder engines before the pan is Installed. The
remaining seven quarts should then be placed in the pan
through the crankcase filler opening. In six cylinder engines
the entire quantity is poured through the crankcase oil filler
pipe.
An engine in normal operating condition is expected to
use some oil, and it is therefore not unusual to add oil
between change periods. Its rate of usage is governed by the
individual engine and is dependent on operating speeds,
temperatures, and the viscosity and quality of the oil used.
The oil level should be checked each time fuel is added.
The gauge is located on the left side of the engine and is
markedto show the"OilLevel Range" andthe"Low Mark",
Figure 5.
FIGURE 5
For normal operation the oil level is satisfactory when it
is within the "Oil Level Range". For high speed operation
the level should be maintained at the full mark which is the
top line on the "Oil Level Range".
To make an accurate check, wait a minute or two after
shutting off the engine to permit the oil to drain back into
the oil pan. Approximately three and one-half quarts of oil
are required to bring the level from low to full in both six
and eight
CHECKING ENGINE OIL LEVEL
ENGINE OIL CAPACITIES

LUBRICATION 1 - 9
cylinder engines. If the level happens to be low and the
speedometer indicates that the oil change period is near at
hand, it is more economical to have the oil changed at that
time.
WHEN TO CHANGE ENGINE OIL
The oil which is placed in the engine at the factory is sat-
isfactory for the first 500 miles of operation and should
then be changed.
Thereafter, at intervals of 2,000 miles, the oil pan should
be drained and refilled. If the car is operated in dusty areas
or for short distances at low speeds during cold weather,
foreign matter and sludge will accumulate and the oil
should be changed more frequently. However, the actual
change period is largely dependent on the individual driv-
ing circumstances.
The oil is drained by removing the plug at the rear of the
oil pan. To insure complete draining, it is important that
the operation be performed while the engine is warm.
Recommend to your customer that it is a good practice
to remove the oil pan at least twice a year, preferably in the
spring and fall to permit thorough cleaning of the screens
and pan.
CAUTION: The use of flushing oil or compounds is not
recommended. However, in the event they are used, it
will be necessary to remove the oil reservoir and thor-
oughly clean it out before Installing the new oil.
THE PROPER ENGINE OIL TO USE
The use of high-grade engine oil of the correct type is of
the greatest importance in obtaining maximum engine per-
formance. Always select oils from well-known and depend-
able brands, and of the proper viscosity to suit the seasonal
and customer driving requirements.
Theoilrefinersormarketerssupplyingengineoilsareresponsiblefor
the quality of their products and their reputation, is the car owners
best assurance of receiving high-grade lubricants.
TYPES OF OIL
The various types of oil marketed for engine lubrication
have been defined by the American Petroleum Institute as
follows:
REGULAR MOTOR OIL - This term is used to designate
a straight mineral oil. Oils of this type are generally suitable
under moderate driving conditions.
PREMIUM MOTOR OIL - This term is used to designate
an oil having proved oxidation, stability, and bearing corro-
sion preventative properties. Oils of this type are generally
suitable for use where operating conditions are such that
regular oils do not give satisfactory service.
HEAVY-DUTY MOTOR OIL - This term is used to desig-
nate an oil having proved oxidation, stability, bearing corro-
sion preventative properties and detergent characteristics.
Oils of this type are generally suitable for use in both high-
speed diesel and gasoline engines under heavy-duty service
conditions.
It is most important that the oil should have the ability to
flow at low temperatures to permit easy starting, and at the
same time afford adequate lubrication when the engine is at
normal operating temperatures. The oil selected should be
based on its ability to perform these two functions at the
lowest anticipated temperatures expected before the next oil
change period. The illustration, Figure 3, will be helpful in
making this selection.
NOTE: Kerosene should be added only when temperatures
below -10° are expected for long periods.

1 - 10 LUBRICATION
OIL DILUTION
The lubricating oil in the crankcase is sometimes
thinned or diluted due to gasoline leaking by pistons and
rings and mixing with the oil. This leakage usually occurs
during the "warming-up" period when the fuel is not
thoroughly vaporized and burned.
The Hudson engines are equipped with automatic
devices that are designed to reduce oil thinning caused by
raw fuel dilution.
In order to assist the engine to warm up as quickly as
possible the water temperature is controlled by a thermo-
stat which prevents complete water circulation for cool-
ing until a predetermined temperature has been reached.
Another thermostat automatically controls the open-
ing of a valve mounted inside the exhaust manifold to
vary the amount of heat applied to the walls of the intake
manifold. This item combined with the previously men-
tioned features greatly reduces the cold running periods.
As a further safeguard, the Hudson crankcase ventilat-
ing system is utilized to expel from the crankcase any
ordinary collection of water or fuel vapors. In this system
the rotating crankshaft acts as a blower to force such
vapors from the case via the breather tubes on the valve
chamber cover.
CRANKCASE VENTILATOR
Inlet:
The crankcase ventilator inlet is part of the crankcase
oil filler cap assembly on the 6 cylinder engines. This filler
cap contains copper gauze which filters the air passing
into the crankcase.
The cap should be inspected every time oil is added
and should be thoroughly cleaned at least every 5,000
miles. Clean in gasoline and blow dry. Re-oil the filter
element gauze.
Outlet:
The crankcase outlet ventilator is mounted at the rear
valve cover on both 6 and 8 cylinder engines.
In cases of excessive oil usage or leaks at rear main bearing,
check the outlet breather pipe. This pipe may be plugged
with dirt, and on the 8 cylinder engines, it may be restricting
at the valve cover baffle. DO NOT tighten the breather
outlet pipe attaching bolt more than 2 -3/4 to 3-1/4 torque
pounds.
CAPACITIES
Engine Oil - Dry
U.S. Quarts
Imperial Quarts
Engine Oil-Refill
U.S. Quarts
Imperial Quarts
Clutch
U.S. Pint
Imperial Pint
Transmission (Single Lever Type)
U.S. Lbs
Imperial Lbs
Transmission (Double Lever Type)
U.S. Lbs
Imperial Lbs.
U.S. Lbs.
Imperial Lbs.
U.S. Lbs.
Imperial Lbs
Hydra-Matic Refill
U.S. Quarts
Rear Axle
U.S. Lbs.
Imperial Lbs.
6 Cyl.
7-1/2
6-1/2
7
6
1/3
1/4
2
2
2 -1/4
2 -1/4
3
3
3-1/4
3-1/4
11
3-1/2
3-1/2
8 Cyl.
8
7-1/2
7
6
1/3
1/4
2
2
2 -1/4
2 -1/4
3-1/4
3-1/4
3
3
11
3-1/2
3-1/2
Transmission & Overdrive (Single Lever Type)
Transmission & Overdrive (Double Lever Type)