John Deere 4050 4250 4450 Tractors Repair Technical Manual
Model: TM1353
TM1259
Dive into the heart of tractor maintenance with our comprehensive John Deere 4050, 4250, 4450 Tractors Service Technical Manual – your ultimate guide to mastering repairs, servicing, and troubleshooting. This PDF manual is not just a document; it’s a direct gateway to the manufacturer’s wealth of technical insights.
Factory-Grade Expertise:
This manual is the epitome of authenticity, derived directly from the manufacturer. It’s not just a guide; it’s the official manual used by professional technicians and workshops globally.
In-Depth Technical Details:
Explore a treasure trove of technical details, meticulously compiled to empower you with the same knowledge that drives professional technicians. Every page is a window into the intricate workings of your John Deere tractor.
John Deere 4050, 4250 4450 Tractors Service Technical Manual
models covered:
john Deere 4050 tractor
john Deere 4250 tractor
john Deere 4450 tractor
10-General
15-Separation
20-Engine
30-Fuel And Air System
40-Electrical
50-Power Train-Perma Clutch™ Transmission
55-Power Train-Power Shift Transmission
60-Steering/Brakes
70-Hydraulics
Section70-Hydraulics-Continued
80-Miscellaneous
90-Operator Station
95-Miscellaneous Options
99-Special Tools
service technical manual covers:
section 10 – general
05 – predelivery, delivery and after-sale services
10 – tune-up
15 – lubrication
section 15 – separation
05 – front axle
10 – front-end
15 – front-end and engine
20 – engine
25 – sound-gard body and roll-gard protective structure
30 – power shift clutch housing
31 – quad-range clutch housing
35 – transmission
40 – final drives
41 – hi-crop final drives
section 20 – engine
05 – acquire access to cylinder head, valves and camshaft
10 – acquire access to cylinder block, liners, pistons and rods
15 – acquire access to crankshaft, main bearings and flywheel
20 – acquire access to lubrication system
25 – remove / install cooling system
section 30 – fuel and air system
05 – acquire access to air intake system
10 – acquire access to diesel fuel system
15 – speed control linkage
section 40 – electrical
05 – harness replacement
06 – connector repair
10 – remove / install delco-remy charging circuit
11 – john deere charging circuit repair
15 – starting circuit replacement
25 – lighting circuit repair
30 – investigator ii warning system and digital tachometer repair
31 – gauge cluster instrumentation repair
32 – analog tachometer repair
35 – accessories circuit repair
section 50 – power train – perma clutch transmission
05 – remove / install clutch oil pressure valve housing
10 – clutch oil pressure regulating valve housing
15 – clutch operating piston housing
20 – perma clutch
30 – 4050 and 4250 quad-range planetary
31 – 4450 quad-range planetary
35 – eight-speed transmission & charge pump
45 – shift lever assembly
55 – pto gear train (without mfwd)
56 – pto gear train (with mfwd)
60 – adjust pto clutch rod
65 – 4050 (trans. serial no. -006643) differential
66 – 4050 (trans. serial no. 006644-), 4250 and 4450 differential
70 – removal / install differential lock valve and adjust lock valve release bar
75 – differential lock valve
80 – final drive
85 – hi-crop final drive
90 – mfwd gear train and clutch
95 – mfwd axle
section 55 – power train – power shift
05 – remove / install traction clutch valve housing
10 – traction clutch valve housing
15 – remove / install transmission control valve housing
20 – transmission control valves
25 – remove / install traction clutch
30 – traction clutch and drive shafts
35 – input planetary
40 – reduction gear train
45 – 4050 and 4250 output planetary
46 – 4450 output planetary
50 – speed selector assembly
55 – charge pump assembly
60 – pto gear train with mfwd
61 – pto gear train without mfwd
65 – adjust pto clutch rod
70 – 4050 (trans. serial no. -002724) differential
71 – 4050 (trans. serial no. 002725-), 4250 and 4450 differential
75 – remove / install differential lock valve and adjust lock valve release bar
80 – differential lock valve
85 – final drive
90 – hi-crop final drive
95 – mfwd gear train
100 – mfwd clutch
105 – mfwd axle and final drive
section 60 – steering / brakes
05 – remove / install power steering components
10 – steering column
15 – metering pump
20 – steering column
25 – steering valve
26 – dual piston steering motor
30 – steering assist cylinders (mfwd)
35 – remove / install brake valve and brake accumulator
40 – brake valve
45 – brake accumulator
50 – bleeding brakes and testing brake accumulator
55 – brake pistons, plates and disks
section 70 – hydraulics
05 – remove / install main hydraulic pump
15 – oil filter relief valve housing (qrt)
20 – return oil filter relief valve housing (pst)
25 – remove / install attenuator
30 – hydraulic attenuator
35 – remove / install hydracushioned seat valve
40 – repair hydracushioned seat valve assembly
45 – pressure control valve
50 – remove / install rockshaft components and adjust lift assist cylinders
55 – rockshaft components
60 – lift assist cylinders
65 – draft sensing components
70 – hitch components
75 – remove / install scv coupier & levers
80 – scv and iso coupler
85 – remote cylinder
90 – hydraulic oil cooler and thermal bypass valve
95 – transmission-hydraulic system clean-up procedure
section 80 – miscellaneous
05 – rear wheels
10 – front axle
section 90 – operator station
05 – air conditioning system
06 – air conditioning system service
10 – heating system
15 – seat
section 95 – miscellaneous options
40 – auxiliary lighting and electrical components
45 – digital tachometer ground speeds
62 – auxiliary trailer brake
63 – secondary brake
80 – minor options
85 – auxiliary steering system
section 99 – special tools
Visual Mastery:
Navigate through the manual’s easy-to-read text sections complemented by top-quality diagrams. Visual aids and instructions of unparalleled clarity guide you through every repair and maintenance procedure.
Step-by-Step Expertise:
Uncover the secrets known to factory-trained technicians as you embark on a step-by-step journey through the fundamentals of maintenance and repair. Gain insights that empower you to keep your vehicle working at its peak.
Global Standard:
Trusted by mechanics, workshops, and technicians worldwide, this manual sets the global standard for tractor service and repair. It’s not just a manual; it’s a testament to decades of engineering excellence.
Innovative Solutions Unveiled:
Tackle the most innovative features loaded on your John Deere tractor with confidence. This manual ensures that repairing and maintaining cutting-edge technologies is not just feasible but also a seamless process.