TM 9-1783C Medium Tractor M1 (Allis-Chalmers HD-7W) Electrical System, Power Train, Frame, And Tracks, 1943-07-26 Prepared under the direction of the Chief of Ordnance (with the cooperation of the Allis-Chalmers Manufacturing Company) CONTENTS Paragraphs Pages CHAPTER 1. Introduction 1-3 3 CHAPTER 2. Maintenance Allocation 4-5 4-11 CHAPTER 3. Inspection of Vehicle While Assembled 6 12 CHAPTER 4. Electrical System 7-12 13-14 Section I. Description of system 7 13 II. Electrical accessories 8-12 14 CHAPTER 5. Final Drives 13-21 15-61 CHAPTER 6. Instruments 22-23 62-63 CHAPTER 7. Power Take-off 24-30 64-86 CHAPTER 8. Stabilizer Spring and Crank Assembly 31-44 87-106 Section I. Stabilizer spring 31-36 87-92 II. Stabilizer crank assembly 37-44 93-106 CHAPTER 9. Steering Clutches 45-58 107-149 Section I. Clutch assemblies 45-53 107-145 II. Steering clutch controls 54-58 146-149 CHAPTER 10. Tractor Brakes 59-64 150-154 CHAPTER 11. Transmission and Gearshift Mechanism 65-77 155-215 Section I. General description 65 155 Section II. Trouble shooting for transmission gears and gearshift assembly 66 156-157 III. Transmission gears 67-71 158-202 IV. Gearshift mechanism 72-77 203-215 CHAPTER 12. Truck Frame and Track Assembly 78-115 216-280 Section I. General description 78 216 II. Front idlers, truck wheels, and track support rollers 79-92 217-247 III. Track release mechanism 93-99 248-262 IV. Track assembly 100-108 263-273 V. Truck frame assembly 109-115 274-280 CHAPTER 13. Winch 116-125 281-321 CHAPTER 14. Miscellaneous Assemblies (Cowl, Engine Spacer, Engine Support, Fuel Tank and Lines, And Pintle Assemblies) 126-148 322-356 Section I. Cowl assembly 126-128 322-334 II. Engine spacer 129-134 335-343 III. Engine support 135-138 344-348 IV. Fuel tank and lines 139-143 349-351 V. Pintle assemblies 144-148 352-356 REFERENCES 357-358 INDEX 359-366, Caption title, "TM 9-1783C.", "26 July 1943.", Includes 2 folded plates, Includes bibliographical references (pages 357-358) and index