Technical Letters issues by Packard on various issues.

Ordered by Date Issued, some not issued in sequential order.


Technical Letter No. 1595, March 25, 1919, Improvement in Gabriel Snubber Construction

Technical Letter No. 1598, December 15, 1919, Relacement and Adjustment of Cam Shaft Driving Chain

Technical Letter No. 1640, February 2, 1920, Steering Connecting Rod Rear Joint On First and Second Series Twin-Six Cars

Technical Letter No. 1663, September 21, 1920, Instructions for Third Brush Regulated Generator on E-Trucks

Technical Letter No. 1668, November 8, 1920, Twin Six Foor Brake Adjustment

Technical Letter No. 1680, February 23, 1921, Atwater Kent Guarantee

Technical Letter No. 1686, April 23, 1921, Twin-Six Motor Starter Clutch

Technical Letter No. 1717, February 21,1922, Front Spring Front Brackets - EC Truck

Technical Letter No. 1720, April 19, 1922, Spark Advance on Packard Six and Twin-Six Cars

Technical Letter No. 1726, May 23, 1922, Application of Model 126 Battery Case to Model 116

Technical Letter No. 1729, June 15,1922, Rear Seat Bottom Panel Cleat - Single Six

Technical Letter No. 1730, July 20, 1922, Sterring Worm Nut - Packard Six

Technical Letter No. 1733, July 29, 1922, Oil Pump Relief Valve - Packard Six

Technical Letter No. 1735, October 3, 1922, Real Axle Adjustments - Single-Six

Technical Letter No. 1738, November 7, 1922, Worm Thrust Bearing Mounting

Technical Letter No. 1742, Decemeber 8, 1922, Free Service Work on Vehicles From Another Territory

Technical Letter No. 1744, January 3, 1923, Coupe Folding Seat

Technical Letter No. 1746, January 13, 1923, Oil Test Tank For Motor Lubrication System

Technical Letter No. 1748, March 16, 1923, Use Of High Test Gasoline In Twin-Six

Technical Letter No. 1750, March 26, 1923, Attachment of Non-standard Accessories and Equipment

Technical Letter No. 1751, May 12, 1923, Packard Patent Plate

Technical Letter No. 1752, May 14, 1923, Brake Squeaks, Bonnet Clamps and Removeal Of Battery

Technical Letter No. 1753, June 5, 1923, Packard Service Principles

Technical Letter No. 1754, July 2, 1923, Owen-Dyneto Gurantee

Technical Letter No. 1755, July 6, 1923, Instructions For Aligning Connecting Rods

Technical Letter No. 1756, August 29, 1923, Lubrication of Chassis Springs

Technical Letter No. 1758, September 29, 1923, Cold Weather Radiator Protection

Technical Letter No. 1761, November 3, 1923, Single-Six and Single-Eight Gasoline Gauge Equipment

Technical Letter No. 1762, November 5, 1923, Motor Crankshaft Rear Bearing Oil Leak

Technical Letter No. 1764, November 16, 1923, Revised Chart on Cylinder Regrinding for Distributers

Technical Letter No. 1768, December 28, 1923, Instructions for Timing Straight-Eight Motor

Technical Letter No. 1769, Decemeber 28, 1923, Motor Lubrication of New Vehicles

Technical Letter No. 1781, April 10, 1924, Brake Adjustment

Technical Letter No. 1797, December 19, 1924, Spring Guarantee

Technical Letter No. 1799, January 23, 1925, Cold Weather Starting

Technical Letter No. 1804, May 8, 1925, Instructions for Aligning Connecting Rods

Technical Letter No. 1808, July 23, 1925, Ring Gears and Pinions for Packard Eight Rear Axles

Technical Letter No. 1812, September 28, 1925, Chassis Lubricating Tank

Technical Letter No. 1816, November 20, 1925, Steering Adjustment

Technical Letter No. 1819, December 16, 1925, Transmission Second Speed Gear Lock

Technical Letter No. 1821, January 30, 1926, New Style Cylinder Head

Technical Letter No. 1822, April 14, 1926, Packard Owners Service Register

Technical Letter No. 1825, June 17, 1926, Valve Cover Plate Gaskets

Technical Letter No. 1827, August 11, 1926, High Compression Cylinder Heads

Technical Letter No. 1828, August 11, 1926, Ramco Inner Cushion Rings

Technical Letter No. 1829, August 16, 1926, Squeaks in Disc Wheels

Technical Letter No. 1831, October 26, 1926, Oil in Chassis Lubricator Tanks

Technical Letter No. 1832, October 29, 1926, Motor to Frame Brace

Technical Letter No. 1835, January 21, 1927, Piston Scoring and Scuffing

Technical Letter No. 1836, February 28, 1927, Clutch Shifter Bearing Lubricators

Technical Letter No. 1837, January 27, 1927, Special Parts

Technical Letter No. 1838, January 29, 1927, Steering Adjustments

Technical Letter No. 1840, May 18, 1927, Steering Knuckle Ball Bearings

Technical Letter No. 1841, August 8, 1927, Changes in 526-533 Models

December 1, 1927, Index to Active Technical Letters

Technical Letter No. 1852, May 5, 1928, Crankcase Lubricating Oil SAE Standards

Technical Letter No. 1853, August 9, 1928, Front Spring Trunnion Bracket

Technical Letter No. 1854, August 15, 1928, Carburetor Air Cleaner

Technical Letter No. 1857, Undated, 1928, Shock Absorber Adjustment

Technical Letter No. 1860, December 19, 1928, Carburetor Change

Technical Letter No. 1861, December 29, 1928, Shock Absorber Metering Valves

Technical Letter No. 1862, January 2, 1929, Riding Qualities of the 640-645

Technical Letter No. 1863, January 15, 1929, Ignition Timing

Technical Letter No. 1864, February 11, 1929, Brake Adjustment

Technical Letter No. 1865, February 14, 1929, Oil Pump Relief Valve

Technical Letter No. 1866, February 20, 1929, Spring Brake for Ignition Distributor

Technical Letter No. 1867, April 8, 1929, Educational Film Service for your Service Department

Technical Letter No. 1868, April 24, 1929, Carburetor Change-Over Equipment Models 426-433 526-533 443

Technical Letter No. 1869, April 26, 1929, Non-Shatterable Glass

Technical Letter No. 1870, April 29, 1929, New Style Camshaft

Technical Letter No. 1871, April 29, 1929, Speedometer and Rear Axle Gear Ratio Chart

Technical Letter No. 1872, May 2, 1929, Radiator Cap and Heat Thermometer for Packard Six

Technical Letter No. 1873, May 18, 1929, Universal Joint Shaft Repairs

Technical Letter No. 1873-A, March 30, 1929, Universal Joint Shaft Repairs

Technical Letter No. 1874, May 25, 1929, Bonnet Side and Door Assemblies 626-633

Technical Letter No. 1875, May 26, 1929, Radiator Repairs

Technical Letter No. 1876, June 27th, 1929, New Style Water Pump for 626-633

Index To Active Techincal Letters Revised to July 1, 1929

Technical Letter No. 1878, August 1, 1929, Gasoline Gauges (Telegage Dash Units)

Technical Letter No. 1879, September 24, 1929, Special Parts

Technical Letter No. 1880, October 19, 1929, Shock Absorber Filler Plug

Technical Letter No. 1881, October 22, 1929, Transmission Gear Shifter Levers

Technical Letter No. 1882, October 23, 1929, Change in Brake Front Camshaft

Technical Letter No. 1883, October 29, 1929, Radiator Repairs

Technical Letter No. 1884, November 18, 1929, Recommended Chart on Cylinder Regrinding

Technical Letter No. 1885, November 18, 1929, Recommended Chart on Cylinder Regrinding

Technical Letter No. 1886, November 20, 1929, Anti-Freeze Solutions in Seventh Series Cars

Technical Letter No. 1888, December 19, 1929, Cold Weather Starting

Technical Letter No. 1889, December 27, 1929, Radiator Shutter Return Spring

Technical Letter No. 1890, January 30, 1930, Oil Pump Air Bleed

Technical Letter No. 1891, January 30, 1930, Brake Adjustment

Technical Letter No. 1892, February 24, 1930, Brake Changes

Technical Letter No. 1893, February 26, 1930, Packard Patent Plate

Technical Letter No. 1894, March 5, 1930, Fan Belt Adjustment 626

Technical Letter No. 1895, March 17, 1930, Boiling Gasoline

Technical Letter No. 1896, March 18, 1930, Ventilator Leaks

Technical Letter No. 1898, April 4, 1930, Water Pump Installation 626

Technical Letter No. 1899, May 6, 1930, Front Axle Steering Knuckle Stops

Technical Letter No. 1903, August 1, 1930, Shock Absorber Expansion Tank Equipments

Technical Letter No. 1904, September 25, 1930, Water Pump Change Over Equipment

Technical Letter No. 1904-A, October 16, 1930, Water Pump Change Over Equipment

Technical Letter No. 1904-B, December 4, 1931, Water Pump Change Over Equipment

Technical Letter No. 1905, November 3rd, 1930, Induction in High Tension Wiring

Technical Letter No. 1906, November 5, 1930, Bonnet Side and Door Assemblies

Technical Letter No. 1906-A, April 4, 1932, Bonnet Side and Door Assemblies

Technical Letter No. 1907, December 19, 1930, Packard Shock Absorbers (Sixth and Seventh Series)

Technical Letter No. 1909, March 24, 1931, Eighth Series Shock Absorbers Equipment

Technical Letter No. 1910, March 26, 1931, Packard Quality Replacement Glass

Technical Letter No. 1911, June 17, 1931, Motor Connecting Rod Screws

Technical Letter No. 1912, July 24, 1931, Shock Absorber Ride Control Valves

Technical Letter No. 1913, July 31, 1931, Correction of Vapor Lock

Technical Letter No. 1914, August 10, 1931, Speedometers on Ninth Series Cars

Technical Letter No. 1915, August 12, 1931, Packard Ninth Series Repair Operations

Technical Letter No. 1916, November 18, 1931, Startix Switch Safety Cut-Out

Technical Letter No. 1904-B, December 4, 1931, Water Pump Changeover Equipment

Technical Letter No. 1918, February 1, 1932, Recommended Chart on Cylinder Regrinding

Technical Letter No. 1923, April 4, 1932, Special Parts

Technical Letter No. 1928, July 1, 1932, Differential Carrier Assembly (Light Eight)

Technical Letter No. 1929, July 15, 1932, Rear Axle Lubrication

Technical Letter No. 1931, January 19, 1933, Rear Shock Absorbers - Light Eight

Technical Letter No. 1934, March 21, 1933, Cylinder Block Water Passages

Technical Letter No. 1935, June 6, 1933, Motor Connectings Rods - Sixth, Seventh, Eight, and Ninth Series

Technical Letter No. 1936, June 9, 1933, Allowances

Technical Letter No. 1939, June 21, 1933, Rear Shock Absorbers - Light Eight

Technical Letter No. 1941, June 23, 1933, Fuel Pumps

Technical Letter No. 1944, July 6, 1933, Seat Cushions

Technical Letter No. 1945, July 8, 1933, Intake Manifold Drain Tube

Technical Letter No. 1946, July 18, 1933, Fuel Pumps

Technical Letter No. 1948, September 26, 1933, Oil Noises

Technical Letter No. 1949, October 5, 1933, Exchange Prices of Packard Six, Eight, and Twelve Motor Connecting Rods and Bushing Assemblies

Technical Letter No. 1950-A, April 6, 1934, Discontinuance of Motor Oil Cooler Labor and Material Credits

Technical Letter No. 1951, January 29, 1934, Shock Absorbers

Technical Letter No. 1952, June 20, 1934, Recommended Chart on Cylinder Regriding

Technical Letter No. 1954, July 2, 1934, Exchange Prices of Packard Six, Eight, and Twelve Motor Connecting Rods and Bushing Assemblies

Technical Letter No. 1955, July 10, 1934, Exchange Prices of Packard Six, Eight and Twelve Clutch Plates

Technical Letter No. 1958, July 12, 1934, Exchange Prices of Packard Six, Eight and Twelve Motor Flywheel Assemblies

Technical Letter No. 1961, July 31, 1934, Radiator Recoring and Repairing

Technical Letter No. 1962, September 18, 1934, Wheel Castor

Technical Letter No. 1963, September 21, 1934, Front Seat Position

Technical Letter No. 1964, October 26, 1934, Rear Quarter Windows - 12th Series

Technical Letter No. 1965, February 14, 1935, Oil Cooler - Packard Twelve

Technical Letter No. 1965-A, May 3, 1935, Oil Cooler - Packard Twelve

Technical Letter No. 1967, May 15, 1935, Door Lock Strikers - 120

Technical Letter No. 1968, May 17, 1935, Oil Bath Air Cleaners

Technical Letter No. 1969, June 20, 1935, Vapor Lock - Packard 120

Technical Letter No. 1970, June 24, 1935, Transmission Case Cover Boot - 120

Technical Letter No. 1971, September 18, 1935, Run-Down Batteries - Packard 120

Technical Letter No. 1973, November 26, 1935, Shock Absorber Changeover Equpiment Sixth and Seventh Series Cars

Technical Letter No. 1974, December 9, 1935, Generator Output

Technical Letter No. 1975, January 31, 1936, Water in Gasoline

Technical Letter No. 1975, April 8, 1936, Door Alignment - 12th and 14th Series Cars (incorrectly numbered)

Technical Letter No. 1978, May 25, 1936, Rear Axle Lubricants

Technical Letter No. 1979, June 5, 1936, Oil Gauge Line - Packard Twelve

Technical Letter No. 1980, July 7th, 1936, Front Stabilizer Equipment

Technical Letter No. 1982, July 22, 1936, Spark Knock

Technical Letter No. 1983, September 23, 1936, Rear Axle Housing Packard Six and One Twenty C

Technical Letter No. 1984, November 10, 1936, Rear Axle Lubricants

Technical Letter No. 1985, January 18, 1937, Rear Axle Lubricants

Technical Letter No. 1986, May 18, 1937, Rear Axle Lubricants

Technical Letter No. 1986, July 8, 1937, Vapor Lock (incorrectly numbered)



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