John Deere 820 Tractor Repair Technical Manual (S.N after 37000 -)

Table of Content(Repair Technical Manual – TM4212)

    SECTION 10-GENERAL INFORMATION
Group 5 – Specifications
Group 10 – Pre-delivery, delivery and after-sales inspections
Group 15 – Lubrication and periodic service
Group 20 – Engine and tractor tune-up and adjustment
Group 25 – Separation
SECTION 20- ENGINE
Group 5 – General information, diagnosing malfunctions
Group 10 – Cylinder head and camshaft
Group 15 – Cylinder block, liners, pistons and connecting rods
Group 20 – Crankshaft, main 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 – BOSCH injection pump
Group 20 – ROTO DIESEL injection pump
Group 25 – ROOSA MASTER MODEL CB injection pump
Group 30 – ROOSA-MASTER injection nozzles
Group 35 – BOSCH injection nozzles
Group 40 – Cold weather starting aids
SECTION 40- ELECTRICAL SYSTEM
Group 5 – Diagnosing malfunctions
Group 10 – ”BILUX” lighting system
Group 15 – Sealed-beam lighting system (from tractor serial no. 77054 L)
Group 16 – Sealed-beam lighting system (up to tractor serial no. 77053 L)
Group 20 – Starting motor
Group 25 – Alternator and regulator
Group 30 – Generator and regulator
SECTION 50- POWER TRAIN
Group 5 – Engine dual-stage clutch and clutch linkage
Group 10 – Collar-shift transmission
Group 15 – Differential assembly
Group 20 – Final drives
Group 25 – PTO shafts
SECTION 60- FRONT AXLE, STEERING SYSTEM AND BRAKES
Group 5 – Front axle
Group 10 – Manual and power steering
Group 15 – Brakes
SECTION 70-HYDRAULIC SYSTEM
Group 5 – General information, diagnosing malfunctions,pressure tests
Group 10 – Oil reservoir, filter and valves
Group 15 – Hydraulic pump and transmission oil pump
Group 20 – Rockshaft
Group 25 – Selective control valve
SECTION 80-MISCELLANEOUS
Group 5 – Belt pulley
Group 10 – DE LUXE seat
Group 15 – Front wheels

This Unit of the Service Manual contains maintenance instructions for the Model 820 Tractor.
Included are complete instructions for removal, disassembly, inspection, repair, assembly, and installation of all parts and assemblies.

In addition, the manual contains a brief description of the more complicated systems of the tractor and tells how they operate. Dimensions of many new wearing parts are given as an aid in determining when parts replacement is necessary. Tests and adjustments required to keep the tractor operating at full efficiency are explained in detail. Full instructions on preparing a new tractor for delivery to the customer are included.

Use the manual whenever in doubt about correct maintenance procedures. Use it as a text book for new Service Department personnel who are unfamiliar with John Deere Tractor.
Daily use of the manual as a guide for any and all service problems will reduce error and costly delay to the minimum and assure you the best in finished service work.