John Deere 2020, 2120 Tractor Service Manual
TM4252
Illustrated Factory Diagnostic and Repair Technical Service Manual for John Deere 2WD or MFWD Tractors Models 2020, 2120
TM2020 John Deere
This manual contains high-quality images, circuit diagrams, instructions to help you to maintenance, troubleshooting, diagnostic, and repair your truck. This document is printable, without restrictions, contains searchable text, bookmarks, crosslinks for easy navigation.
John Deere 2020, 2120 Tractor Service Manual
Language: English
Covered models:
2020
2120
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 connecting rods
Group 20 – Crankshaft, crankshaft bearings 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 – ROSA-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 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 5 – Front axle
Group 10 – Steering
Group 15 – Brakes
SECTION 70-HYDRAULIC SYSTEM
Group 5 – 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 5 – Belt pulley
Group 10- De Luxe seat
Group 15 – Front and rear wheels
Group 20 – Hydraulic hitch
Group 25 – Roll guard
John Deere 2020, 2120 Tractor Service Manual