John Deere 2120 Tractor Technical Manual
TM4252
SECTION 10 - GENERAL INFORMATION
Group 05 - Specifications
Group 10 - Predelivery, Delivery, and After-Sales Inspections
Group 15 - Lubrication and Service
Group 20 - Engine and Tractor Tune-Up and Adjustment
Group 25 - Removal and Installations of Assemblies
SECTION 20 - ENGINE
Group 05 - General Information, Diagnosising 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 05 - Diagnosing Malfunctions
Group 10 - Fuel Tank, Transfer Pump, Fuel Filters
Group 15 - ROTO-DIESEL Injection Pump
Group 20 - ROOSA-MASTER Onjection Nozzles
Group 25 - Cold Weather Starting Aids
SECTION 40 - ELECTRICAL SYSTEM
Group 05 - Diagnosing Malfunctions
Group 10 - Components and Wiring Diagrams
SECTION 50 - POWER TRAIN
Group 05 - Engine Clutch and Clutch Linkage
Group 10 - HIGH-LOW Shift Unit
Group 15 - 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 05 - Front Axle
Group 10 - Steering
Group 15 - Brakes
SECTION 70 - HYDRAULIC SYSTEM
Group 05 - General Information, Diagnosing Malfunctions, Pressure Tests
Group 10 - Oil Reservoir, Filter, Valves and Oil Cooler
Group 15 - 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 05 - Belt Pulley
Group 10 - DE LUXE Seat
Group 15 - Front and Rear Wheels
Group 20 - Hydraulic Hitch
Group 25 - Roll Guard

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