Pontiac Hydra Matic Transmission Manual 1948-1953

Description

This 184 page, Pontiac Hydra Matic Transmission Manual is a reproduction of the original 1948-1953 Pontiac Hydra Matic Transmission Manual.  It provides service, repair and maintenance information for 1948-1953 Pontiac Hydra-Matic Automobile Transmissions.

This manual contains information on 1948, 1949, 1950, 1951, 1952 and 1953 Pontiac Hydra-Matic transmissions. Arrangement of material in the manual is clearly shown with a table of contents located at the front of the book. A detailed table of contents precedes all of the major sections.

MAIN BODY OF MANUAL-SECTIONS 1-16
The information presented in this manual is based primarily on the 1953 Hydra-Matic transmission. Where a difference exists between 1953 and other a note will be included in the text advising of the difference. Where differences are extensive or involved, the note will refer the reader to a specific page in the Appendix, Section 17.

APPENDIX—SECTION 17
The Appendix provides detailed information on units or procedures which are different on 1948-1952 models. This information must be used as noted in the main text and should not be interpreted as a supplement covering all differences on past models. Many differences which do not effect servicing are not mentioned, while minor differences are included as Notes in the main body of the manual.

A detailed table of contents precedes all of the major sections.

Table of contents:

DESCRIPTION AND OPERATING INSTRUCTIONS
General Description
Operating the Hydra-Matic
Towing the Car
Hydra-Matic Drive Fluid
Model Identification

FUNDAMENTAL PRINCIPLES OF THE HYDRA-MATIC TRANSMISSION
Planetary Gear Train
Fluid Coupling
Hydra-Matic Drive Components and Their Location
Fundamentals of the Hydra-Matic Transmission
Band and Clutch Operation
Power Flow in the Hydra-Matic Transmission
Hydraulic Action in the Hydra-Matic Transmission ‘
Operation of Front Pump
Operation of Parking Blocker Piston and Reverse Blocker Piston
Operation of Front Servo
Operation of Rear Servo
Operation of Reverse Cone Clutch

PERIODIC SERVICE RECOMMENDATIONS

ADJUSTMENTS WITH TRANSMISSION IN CAR
Throttle Control Linkage Adjustment
Selector Lever Linkage Adjustment
Neutralizer Switch Adjustment
Starter Interlock and Throttle Cracker Adjustment (1948)
Front and Rear Band Adjustment (External — Tachometer Method)
Front and Rear Band Adjustment (Oil Pan Removed)

MINOR SERVICES AND REPAIRS
Checking Oil Level
Fluid Capacity, Draining and Refilling
Replace Transmission Oil Pan Drain Plug Gasket
Replace Rear Bearing Retainer Seal
Remove, Overhaul and Install:
Pressure Regulator Valve
Governor and Rear Oil Pump Assembly
Front and/or Rear Servo
Control Valve Assembly
Parking Pawl and Parking Brake Bracket
Rear Bearing Retainer and Reverse Assembly
Reverse Shifter Bracket and Crank Assembly

REMOVING THE HYDRA-MATIC TRANSMISSION

DISASSEMBLY OF UNITS FROM TRANSMISSION CASE
Remove Torus Members, Torus Cover and Flywheel
Rear Housing from Transmission
Remove Oil Pan and Side Cover
Remove Parking Brake Bracket Assembly and Control
Valve Assembly
Remove Servos and Rear Oil Pump
Remove Pressure Regulator Assembly
Check End Clearance of Main Shaft
Remove Front Oil Pump Assembly and Front Drive Gear Assembly
Remove Reverse Assembly and Main Shaft
Remove Front and Rear Units from Transmission Case
Remove Front and Rear Units from Planet Carrier

DISASSEMBLY OF INDIVIDUAL UNITS
Disassembly of Front Unit
Disassembly of Rear Unit
Disassembly of Reverse Unit
Disassembly of Pressure Regulator Assembly
Disassembly    of    Front Pump and Front Drive Gear
Disassembly    of    Governor and Rear Pump Assembly
Disassembly of Front Servo Assembly
Disassembly of Rear Servo Assembly
Disassembly of Control Valve Assembly
Disassembly    of    Parking Brake Bracket Assembly
Disassemble    Torus Check Valve from Driven Torus

CLEANING AND INSPECTION OF PARTS
Case, Oil Delivery Sleeve, Front and Rear Bands
Front Unit
Rear Unit
Reverse Assembly and Main Shaft
Front Oil Pump and Front Drive Gear
Pressure Regulator Assembly
Governor and Rear Pump
Front Servo
Rear Servo
Control Valve Assembly
Parking Brake Bracket Assembly
Driven Torus Check Valve
Torus Cover
Flywheel

REPAIRS
Rear Oil Pump Repair
Replacement of Rear Servo Accumulator Check Valve
Replacement of Oil Pump and Governor Drive Gear
Replacement of Throttle Valve Inside Lever and Shaft
Replacement of Flywheel Housings
Replacement of Flywheel
Installation of Service Crankshaft or Partial Engine
Alignment of Flywheel Housing

ASSEMBLY OF INDIVIDUAL UNITS
Assembly of Front Unit
Assembly of Rear Unit
Assembly of Reverse tynit
Assembly of Pressure Regulator
Assembly of Front Pump and Front Drive Gear
Assembly of Governor and Rear Pump
Assembly of Front Servo
Assembly of Rear Servo
Assembly of Control Valve
Assembly of Parking Brake Bracket
Assembly of Driven Torus Check Valve

ASSEMBLY OF UNITS IN TRANSMISSION CASE
Front and Rear Units
Reverse Assembly and Main Shaft
Front Pump and Front Drive Gear
Check End Play of Main Shaft
Governor and Rear Pump
Front and Rear Servos
Adjust Front Band
Adjust Rear Band
Control Valve and Parking Brake Bracket
Check Parking Brake Bracket to Governor Alignment ,
Pressure Regulator
Side Cover and Outer Shift Lever
Oil Screen and Oil Pan
Rear Flywheel Housing and Torus Members

TESTING AND DIAGNOSIS
Stall Test
Torus Check Valve Test
Oil Pressure Test
Road Test
Testing Transmission With Air Pressure
Diagnosis Guide
Testing For Fluid Leaks
Testing For Noise

1953 SCHEMATIC OIL CIRCUIT DIAGRAM

SPECIFICATIONS
Recommended Torque Tightness for Bolts
Thrust Washer Identification
General Specifications
Spring Specifications

Index of topics covered…

Accumulator Check Valve, Rear Servo, Repair, Adjustments – Transmission In Car, Bands – Externally, Bands – Oil Pan Removed, Neutralizer Switch, Selector Lever Linkage, Throttle Control Linkage, band, Adjustment – Oil Pan Removed, Application Chart, External Adjustment, front Apply Test, Front Release Test, Rear Release Test, Band Front, Adjustment – Oil Pan Removed, External Adjustment, Inspection, Band Rear, Adjustment – Oil Pan Removed, External Adjustment, Inspection, Booster Pressure, Reverse, Case, Inspection, Passage Identification, Pressure Test, Check Valve, Torus – Missing, Torus – Sticking, Clutch, Application Chart, Front Apply Test, Rear Apply Test, Compensator Pressure, Hydraulic Circuit, Front and Rear Servo Test, Front Servo Operation, Rear Servo, Components Hydra-Matic Transmission, Control Valve Assembly, Assembly, Disassembly, Inspection, Installation, Removal, Repair, Trouble Diagnosis, Crankshaft, Service Installation, Diagnosis, Guide, Instructions, Stall Test, Downshift, Forced 4-3 Shift Action, Forced 3-2 Shift Action, Forced 2-1 Shift Action, Engine, Service Installation, First Speed, Hydraulic Action, Power Flow, Fluid, Capacity, Coupling Fundamentals, Draining, Refilling, Service Recommendations, Testing for Leaks, Flywheel, Aligning Procedure, Check for Fluid Leaks, Crankshaft Construction, Dowel Replacement, Housing Alignment, Housing Installation, Housing Replacement, Inspection, Install Service Assembly, Locating Leaks, Seal Replacement, Fourth Speed, Hydraulic Action, Power Flow, Front Rand, Adjustment – Oil Pan Removed, External Adjustment, Inspection, Front Drive Gear, Assembly, Disassembly, Inspection, Installation, Removal, Front Pump, Assembly, Disassembly, Inspection, Installation, Noise, Operation, Relief Valve Sticking, Removal, Front Servo, 4-3 Valve, Assembly, Compensator Pressure, Compensator Test, Disassembly, Exhaust Valve, Inspection, Installation, Operation, Passage Identification, Removal, Front Unit, Assembly, Disassembly, Inspection, Installation, Planet Gear Noise, Remove from Case, Remove from Planet Carrier, Full Throttle Downshift, Shift Action, Fundamentals, Drive Torus Reduction, Fluid Coupling, Hydra-Matic Transmission, Location of Units, Oil Pump, Planetary Gear Train, Pressure Regulator, Servo Operation, Gear Noise, Front Unit, Rear Unit, Reverse Unit, Governor, Alignment, Assembly, Disassembly, Drive Gear Replacement, Inspection, Installation, Removal, Test, Hydra-Matte Transmission, Fundamentals, Inspection of Case, Installation, Location of Component Parts, Passage Identification Case, Power Flow, Removing, Side Cover Installation, Testing with Air Pressure, Thrust Washer Location, Hydraulic Action, 1st Speed, 2nd Speed, 3rd Speed, 4th Speed, Neutral, Inspection, 1000 Mile, 2000 Mile, New Car, Parts, Installation Transmission, Leaks, Check for Torus Cover Leaks, Flywheel, Linkage, 6 Cylinder, 8 Cylinder, Lubrication, Neutralizer Switch, Selector Lever Adjustment, Throttle Control Adjustment, Trouble Diagnosis, Low Oil Pressure, Diagnosis, LO Position, Hydraulic Action, Power Flow, Lubrication, Checking Oil Level, Linkage, Main Line, Exhaust Valve, Pressure Test, Main Shaft, End Clearance Check, Inspection, Installation, Removal, Selective Washer Table, Minor Services and Repairs, Control Valve Assembly, Fluid, Draining, Capacity, Refilling, Governor and Rear Oil Pump, Oil Pan Drain Gasket Replacement, Parking Brake Bracket Assembly, Parking Pawl, Pressure Regulator Valve, Rear Bearing Oil Seal Replacement, Rear Bearing Retainer and Reverse, Assembly, Rear Oil Pump, Reverse Assembly, Servo Front, Servo Rear, Modulated Main Line Pressure, Neutral, Hydraulic Action, Power Flow, Neutralizer Switch Adjustment, New Car Inspection, Service Recommendations, Noise, Front Pump, Front Unit, Rear Oil Pump, Rear Unit, Reverse Unit, Scraping Torus Members, Oil Delivery Sleeve Inspection, Oil Level Indicator, Service Recommendations, Oil Pan, Drain Plug Gasket Replacement, Installation, Removal, Oil Pressure Diagnosis, Oil Pump, Fundamentals, Front, Rear, Oil Screen Installation, Operating Instructions, Drive Position, Acceleration, Coasting, Forced Downshift, Stopping, LO Position, Parking, Reverse, Starting Engine, Starting Engine by Pushing, Towing, Outer Shift Lever, Installation, Overrun Control Valve, Operation, Parking Blocker Piston, Installation, Operation, Removal, Parking Brake Bracket, Alignment, Assembly, Disassembly, Inspection, Installation, Removal, Trouble Diagnosis, Partial Engine, Service Installation, Planetary Gear Train, Power Flow, 1st Speed, 2nd Speed, 3rd Speed, 4th Speed, Neutral, Reverse, Pressure Regulation, Compensator, Main Line, Regulated TV, Reverse Booster, TV, Pressure Regulator, Assembly, Disassembly, Fundamentals, Inspection, Installation, Removal, Rear Band, Adjustment Oil Pan Removed, External Adjustment, Inspection, Rear Servo – Apply, Rear Servo – Release, Rear Bearing Oil Seal, Installation, Removal, Replacement, Rear Pump, Assembly, Disassembly, Inspection, Installation, Noise (Cross Drive), Removal, Repair, Replacement, Rear Servo, Accumulator Check Valve, Accumulator Check Valve Replacement, Assembly, Disassembly, Exhaust Valve, Inspection, Installation, Operation, Passage Identification, Removal, Rear Unit, Assembly, Disassembly, Gear Noise (Car in Operation), Gear Noise (Car Standing), Inspection, Installation, Remove from Case, Remove from Planet Carrier, Relief Valve, Front Pump – Sticking, Removal Transmission, Repairs, Repairs Minor, Control Valve Assembly, Governor and Rear Oil Pump, Oil Pan Drain Gasket Replacement, Parking Brake Bracket Assembly, Parking Pawl, pressure Regulator Valve, Rear Bearing Oil Seal Replacement, Rear Bearing Retainer, Rear Pump, Reverse Assembly, Servo Front, Servo Rear, Reverse, Booster Pressure, Cone Clutch Apply Test, Hydraulic Action, Power Flow, Reverse Assembly, Assembly, Cone Clutch Operation, Disassembly, Gear Noise, Inspection, Installation, Removal, Reverse Blocker Piston Operation, Reverse Cone Clutch Operation, Reverse Shifter Bracket (1948-1950), Road Testing, Trouble Diagnosis Guide, Second Speed, Hydraulic Action, Power Flow, Selective Washer Table, Serial Numbers, 6 Cylinder, 8 Cylinder, Service installation, Crankshaft, Flywheel Housing, Partial Engine, Service Recommendations, Inspection – 1000 Mile, Inspection – 2000 Mile, Linkage Lubrication, New Car Inspection, Oil Level Indicator, Transmission Fluid, Servo Front, 4-3 Valve, Assembly, Compensator Test, Disassembly, Inspection, Installation, Operation, Passage Identification, Removal, Servo Rear, Accumulator Check Valve, Accumulator Check Valve Replacement, Assembly, Disassembly, Exhaust Valve, Inspection, Installation, Operation, Passage Identification, Removal, Shift Action, Forced 2-1 Downshift, Forced 3-2 Downshift, Forced 4-3 Downshift, LO Range, Reverse, Shift Speed Chart, Side Cover, Installation, Removal, Special Tools, Specifications, General, Springs, Thrust Washers, Torque, Stall Test, Testing, Air Pressure, Compensator to Front and Rear Servos, Fluid Leaks, Fluid Leaks at Flywheel, Fluid Leaks at Torus Cover, Forced 2-1 Downshift, Forced ‘3-2 Downshift, Forced 4-3 Downshift, Front Band Apply, Front Band Release, Front Clutch Apply, Front Pump Noise, Main Line Pressure, Missing Torus Check Valve, Noises, Oil Pressure, Rear Band Release, Rear Clutch Apply, Rear Pump Cross Drive Noise, Rear Pump Inner Gear Noise, Rear Unit Planet Noise, Road, Stall Test, Sticking Front Pump Relief Valve, Sticking Torus Check Valve, Torus Check Valve, Transmission with Air Pressure, Third Speed, Hydraulic Action, Power Flow, Throttle Linkage, Sticking, Throttle Valve, Hydraulic Operation, Manual Shaft & Detent Lever Replacement, Tools Special, Torque, Specifications, Torus, Cheek Valve Sticking, Cover Removal, Drive Speed Reduction, Install Members, Missing Check Valve, Remove Members, Scraping Members, Torus Check Valve, Assembly, Disassembly, Inspection, Test, Torus Cover, Check for Fluid Leaks, Inspection, Installation, Locating Leaks, Removal, Towing, Trouble Diagnosis, Transmission, Assembly, Case Inspection, Description, Disassembly, Inspection, Installation, Passage Identification (case), Removing, Testing with Air Pressure, Thrust Washer Location, Valve Assembly Control, Assembly, Disassembly, Inspection, Installation, Removal, Repair, Trouble Diagnosis, Washer Selective, Washer Thrust, Location in Transmission, Specifications