John Deere 4050, 4250, 4450, 4650, and 4850 Tractors Technical Manual TM1259 01SEP87

SECTION 210—GENERAL
Introduction and Safety Information
SECTION 220—ENGlNE OPERATION
AND TESTS
Group 05—System Operation
Group 10—System Tests and Diagnosis
SECTION 290—FUEL/AlR OPERATION AND TESTS
05—Air Intake System
Group 10—Diesel Fuel System
Group 15—Chntr01 Linkage
SECTION 240—ELECTRlCAL SYSTEM
05—EleCtrical System Information
Group 06—Phase I Electrical Wiring Diagrams
Group 07—Phase II Elætrical Wiring Diagrams
Group 10—Electrical System Diagnosis
Group 15—Delcotron Charging Circuit
Group 16—John Deere Charging Circuit
Group 20—Starting Circuit
Group 25—Lighting Circuit
Group 30—1NVESTlGATORTM II and Digital
Tachometer
Group 31 —Gauge Cluster Instrumentation
Group Tachometer
Group 35—Accessories Circuit
Group 40—PERFORMANCE TRAKTM I Radar
Sensor System (Tachometer Version)
Group 41—PERFORMANCE TRAKTM II Radar
System (Mini-Monitor)
Group 42—PERFORMANCE TRAKTM Ill Radar
Sensor System (Mufti-Function
Monitor)
SECTION 250—POWER TRAIN (PERMA-CLUTCH
TRANSMISSION)
Group 05—0UAD-RANGETM System Operation
Group IO—PERMA-CLUTCHTM Operation
Group 15—QUAD-RANGETM Planetary
Group 20—QUAD-RANGETM Eight-Speed
Group 25—Transmission Oil Pump
Group 30—Transmission Valve
Group 35—Transmission Control Valvæ
Group 40—DifferentiaI and Final Drive
Group 45—SYNCRO-RANGETV Transmision
Group 55—PTO
Group 60 OUAD RANGETU Transmissions
Diagnosis
SECTION 255—POWER SHIFT TRANSMISSION
Group Operation
Group 10—HydrauIic Controls
Group 15—PTO, Differential and Final Drives
Group 16—Power Shift Transmission Diagnosis
Group 20—Mechanical Front Wheel Drive
SECTION GO—STEERING/BRAKES OPERATION
AND TESTS
Group 05—4050, 4250, and 4450 Power Steering
Group 06—4650 and 4850 Power Steering
Group Brakes
SECTION 270—HYDRAULlC OPERATION AND
TESTS
Group 05–PERMA-CLUTCHTU Transmission
Group to—Power Shift Transmission Hydraulic
System and Tests
Group 15—Main Hydraulic Pump
Group 20—-QIJAD-RANGETV Transmission Hy-
drauiic Valves
Group 25—Power Shift Transmission Hydraulic
Valves
Group 30—Pressure Control Valve
Group 95—HYDRACUSHlONED”” seat
Group 40—Rockshaft
(4050, 4250,
Group 45—Rockshatt Operation (4650 and 4850)
Group Control Valve
Group SS—Rernote Cylinder
Group 60—-QUAD-RANGE Hydraulic Diagnosis
Group 65—Power Shift Transmission Hydraulic
Diagnosis
SECTION 290—OPERATOR STATION
OPERATIONS AND TESTS
Group 05—Air Conditioning System
Group 10—Air Conditioning System Tests—
Group 11—System Tests Without Timer
Warning Lamps
Group 12—System Tests With Timer Relay-
Warning Lamps
Group 15—Heatng System Operation Tests
Group 20—HYDRACUSHlONEDTM Seat
SECTION 299—SPEClAL TæLS
Group
Group 10—Fabricated
Group 15—Test Equipment