May, 1953

No. 203

• Design Changes in Model "40" Standard Tractor
• Attachments for "40" Series Tractors

June, 1953

No. 204

• Load-and-Depth Control Anchor Yoke and Lock-Out Screw Adjustments on "40" Series Tractor

August, 1953

No. 206

• New Clamps for Hydraulic Pressure Line in Models "40" and "40" Standard Tractors

September, 1953

No. 207

• Installation and Operation of Powr-Trol Oil Line Breakaway Coupling on John Deere Tractors Models "50", "60", "70", "A", "B", and "G" with Detent-Type Powr-Trol Valve Housing (Serial No. PCV67905)
• Special Service Tools for Model "40" Tractors

November, 1953

No. 209

• Pressure Relief Valve Setting Changed on "40" Series Tractor

December, 1953

No. 210

• Special Set Gauge for Belt Pulleys Used on Model "40" Series Tractors
• Change in Torque Specifications for Model "40" Series Connecting Rod Bolts
• Installation Instructions-AM2092T Grille Guard Attachment for Model "40" Crawler Tractor
• Installation Instructions-AM2093T Light Guard Attachment for Model "40" Crawler Tractor
• Installation Instructions-AM2095T Bottom Guard and Front Drawbar Attachment for Model "40" Crawler Tractor

January, 1954

No. 211

• Lock Adopted for Right-hand Lift Link Leveling Crank on John Deere Models "40" and "40" Standard Tractors
• lock for upper link turnbuckle on john deere models "40" and "40" standard tractors

March, 1954

No. 213

• Correcting Steering Difficulties on John Deere "40" Series Tractors
• New Steering Gear Lubricant Specifications for John Deere Model "40" Series and "M" Series Tractors

April, 1954

No. 214

• Jack attachment available for John Deere Model "40" Standard Tractor

May, 1954

No. 215

• Location of stop changed on 48"-80" adjustable axle for Model "40" (Tricycle) Tractor
• Design change prevents leakage at touch-o-matic crossover valve on John Deere Model "40" Tricycle Tractor

June, 1954

No. 216

• Use load link stops properly on John Deere Model "40" Standard Tractors
• Steering Clutch Housing Changed on John Deere Model "40" Crawler Tractors

August, 1954

No. 218

• Redesigned Shift lever prevents overshifting on John Deere Model "40" Series Tractors
• Grill Guard, Light Guard, and Front End Weight Assembly for John Deere Model "40" Utility Tractors

September, 1954

No. 219

• Correct positioning of swinging drawbars when using three-point hitch implements on John Deere Model "40" Series Wheel-Type Tractors
• Torque specification for draft link trunnion bolts on John Deere Model "40" Series Tractor
• load-and-depth control anchor yoke and lock-out screw adjustments on John Deere Model "40" Utility Tractors
• Change in axle bearing preload on John Deere Model"40" Series Tractors

October, 1954

No. 220

• Correcting interference between angling yoke and tractor track on John Deere No. 61 Angling Bulldozer

November, 1954

No. 221

• Special service tools for removal and installation of track roller and idler bushings on John Deere Model "40" Crawler Tractors
• Establishing gauge marks and aligning track carriers on John Deere Models "MC" and "40" Crawler Tractors
• change of preload on idler tension springs on John Deere Model "40" 4- and 5-Roller Crawler Tractors
• Change in cap screw material and torque specifications on John Deere Model "40" 4- and 5-Roller Crawler Tractors
• high clearance drawbar with revised three-point hitch assembly on John Deere Model "40" Utility Tractor
• Sway chain front anchor attachment on John Deere Model "40" Utility Tractors

December, 1954

No. 222

• Hydraulic control attachment for model "40" series wheel-type tractors

May, 1955

No. 228

• New axle shaft oil seals for john deere model "40" crawler tractors

June, 1955

No. 229

• Fenders changed on john deere model "40" crawler tractors

December, 1955

No. 235

• Multi-viscosity crankcase oils in Models "M," "40," and "420" Series Tractors