Технический мануал John Deere 2120 Tractor — ремонт и обслуживание (EN)

2120 Tractor John Deere TECHNICAL MANUAL 2120 Tractor TM4252 (01 Dec70) English = ° js 1 O I 1q John Deere Werke Mannheim TM4252 (01 Dec70) = C\J jlO I CM LITHO IN U.S.A. ENGLISH =

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Model 2120 Tractor Serial No.

61020 L-up Technical Manual TM-4252 (Dec-70) CONTENTS SECTION 10 - GENERAL INFORMATION Group 5 - Specifications Group 10 - Pre-delivery, delivery and after-sales inspections Group 15 - Lubrication and service Group 20 - Engine and tractor tune-up and adjustment Group 25 - Removal and installation of assemblies SECTION 20 - ENGINE Group 5 - General information, diagnosing malfunctions Group 10 - Cylinder head, camshaft and balancer shafts Group 15 - Cylinder block, liners, pistons and connecting rods Group 20 - Crankshaft, crankshaft bearings and flywheel Group 25 - Timing gear train Group 30 - Oil pump, oil pressure regulating valve and oil filter Group 35 - Engine cooling system Group 40 - Speed control SECTION 30 - FUEL SYSTEM Group 5 - Diagnosing malfunctions Group 10 - Fuel tank, transfer pump, fuel filters Group 15 - ROTO-DIESEL injection pump Group 20 - ROOSA-MASTER injection nozzles Group 25 - Cold weather starting aids SECTION 40 - ELECTRICAL SYSTEM Group 5 - Diagnosing malfunctions Group 10 - Components and wiring diagrams SECTION 50 - POWER TRAIN Group 5 - Engine clutch and clutch linkage Group 10 - HIGH-LOW shift unit Group 1 5 - Transmission Group 20 - Differential assembly Group 25 - Final drives Group 30 - Continuous- running power shaft Group 35 - Independent power shaft SECTION 60 - FRONT AXLE, STEERING AND BRAKES Group 5 - Front axle Group 10 - Steering Group 1 5 - Brakes SECTION 70 - HYDRAULIC SYSTEM Group 5 - General information, diagnosing malfunctions, pressure tests Group 10 - Oil reservoir, filter, valves and oil cooler Group 1 5 - Hydraulic pump and transmission oil pump Group 20 - Rockshaft Group 25 - Selective control valves (spool type) Group 30 - Selective control valve (poppet valve type) Group 35 - Remote hydraulic cylinder SECTION 80 - MISCELLANEOUS Group 5 - Belt pulley Group 10 - DE LUXE seat Group 15 - Front and rear wheels Group 20 - Hydraulic hitch Group 25 - Roll guard Printed in Germany

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2 Model 2120 Tractor TM-4252 (Dec-70) INTRODUCTION Use FOS Manuals for Reference Use Technical Manuals for Actual Service This technical manual is part of a twin concept of service: FOS Manuals for reference Technical Manuals for actual service Some features of this technical manual: Table of contents at front of whole Manual. Contents at front of each Section Specifications at end of each Group Special tools at end of each Group The two kinds of manuals work as a team to give you both the general background and technical details of shop service.

Fundamentals of Service (FOS) Manuals cover basic theory of operation, fundamentals of trouble shooting, general maintenance, and basic types of failures and their causes. FOS Manuals are for training new men and for reference by experienced men. This technical manual was planned and written for you a journeyman mechanic. Keep it in a permanent binder in the shop where it is handy. Refer to it whenever in doubt about correct service procedures or specifications. Using the technical manual as a guide will reduce error and costly delay. It will also assure you the best in finished service work. Technical Manuals are concise service guides for a specific machine.

Technical Manuals are on-the-job guides containing only the vital information needed by a journeyman mechanic. When a serviceman should refer to a FOS Manual for more information, a FOS symbol like the one at the left is used in the TM to indentify the reference. Printed in Germany

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Model 2120 Tractor TM-4252 (Dec-70) General Information 10 Specifications 5-1 Section 10 GENERAL INFORMATION CONTENTS OF SECTION GROUP 5 - SPECIFICATIONS GROUP 15 -LUBRICATION AND PERIODIC SERVICE Page Page Serial numbers 5-2 Model numbers 5-2 Engine 5-2 Engine clutch 5-2 Electrical system 5-2 Transmission 5-3 HIGH-LOW shift unit 5-3 Differential and final drives 5-3 Differential lock 5-3 Powershafts 5-3 Hydraulic system 5-3 Hydraulic steering 5-3 Manual steering 5-3 Hydraulic brakes 5-3 Handbrake 5-3 Capacities 5-3 Travel speeds 5-3 Front and rear wheels 5-3 Dimensions and weights 5-3 General information ..... ..... 20-1 Preliminary engine testing 20-1 Engine checks and adjustment .....

20-2 Performance test 20-3 Tractor adjustment 20-3 Standard torques 20-5 Special tools 20-5 Lubrication and periodic service .... 15-1 GROUP 20 - ENGINE AND TRACTOR TUNE-UP AND ADJUSTMENT GROUP 25 - REMOVAL AND INSTALLATION OF ASSEMBLIES Separating between engine and tractor front end 25-1 Removal and installation of engine 25-3 Removal and installation of clutch housing 25-5 Removal and installation of final drives 25-7 Removal and installation of rockshaft 25-8 Torques for hardware 25-9 Special tools 25-10 GROUP 10 - PREDELIVERY, DELIVERY AND AFTER-SALES INSPEC¬ TIONS Predelivery inspection 10-1 Delivery inspection 10-4 After-sales inspection 10-4 Printed in Germany

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