Part of the John Deere Repair Manuals.
An hour from now you could have a clutch housing split and this John Deere 2650 repair manual PDF open on the bench beside you: 947 factory pages, TM4440 — the Repair volume, as the cover itself says — covering five Deere utility tractors from the 2250 through the 2850. The companion Operation and Test volume is a separate book; this one is the teardown-and-rebuild half. Power train work gets the deepest treatment, roughly a quarter of the book, walking dual-stage clutch, Hi-Lo shift unit, creeper transmission, and independent PTO jobs from teardown to final adjustment. Hydrostatic steering, hydraulic brakes, the rockshaft, and selective control valves each come with their own repair procedures, plus electrical coverage of wiring harnesses, starting motor, and alternator for cab and open-station tractors alike. When you pull the head, run the oiled cap screws down in three steps: 85 Nm (65 ft-lb), then 135 Nm (100 ft-lb), then a further 60 degrees of turn. A worn clutch never checks the forecast. Buy TM4440 once and it stays in your shop for the life of these tractors, bookmarked and keyword-searchable before the next field window opens.
What's Inside This John Deere 2250, 2450, 2650, 2650N, 2850 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety | 10-19 | Safety Rules |
| General | 20-252 | Specifications, Predelivery, Delivery and After-Sales Inspections, Tune-Up, Tractor Separation |
| Engine | 253-258 | Radiator, Viscous Fan Drive and Fan |
| Fuel and Air Intake System | 259-269 | Fuel Tank, Auxiliary Fuel Tank and Water Trap, Cold Weather Starting Aids, Speed Control Linkage, Air Cleaner |
| Electrical System | 270-361 | Wiring Harnesses, Controls and Instruments, Digital Speed-Hour-Meter, Lighting System, Starting Motor, Alternator |
| Power Train | 362-602 | Clutch Operating Systems, Single-Stage Engine Clutch, Dual-Stage Engine Clutch, Hi-Lo Shift Unit, Creeper Transmission, Hydrostatic Creeper Transmission |
| Steering System and Brakes | 603-697 | Hydrostatic Steering, Steering Cylinder, Power Steering, Manual Steering, Hydraulic Brakes, Handbrake, Hydraulic Trailer Brake |
| Hydraulic System | 698-811 | Valves, Hydraulic Pumps, Rockshaft, Selective Control Valves, Iso Breakaway Couplers, Iso Quick Couplers, Remote Cylinder |
| Miscellaneous | 812-840 | Front Axle, Front and Rear Wheels, Axla Pickup Trailer Hitch, Height-Adjustable Trailer Hitch |
| Operator's Station | 841-947 | Safe Handling of Refrigerants, Servicing Air Conditioning System, Compressor, Components of Air Conditioning System, Cab Ventilation and Heating, Operator's Seats, SG2 Cab, MC1 Cab |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Cylinder head to cylinder block (cap screws dipped in oil) 1st step | 85 Nm (65 ft-lb) | p. 3 |
| Cylinder head to cylinder block (cap screws dipped in oil) 2nd step | 135 Nm (100 ft-lb) | p. 3 |
| Cylinder head to cylinder block (cap screws dipped in oil) 3rd step | +60° turn | p. 3 |
| Transmission oil pump cap screws | 55 Nm (40 ft-lb) | p. 4 |
| Transmission oil pump to clutch housing | 55 Nm (40 ft-lb) | p. 4 |
| Hydraulic pump to front axle carrier | 120 Nm (85 ft-lb) | p. 5 |
| Independent PTO bearing quill to transmission case | 120 Nm (85 ft-lb) | p. 5 |
| Continuous running PTO bearing quill to transmission case | 120 Nm (85 ft-lb) | p. 5 |
| Torque for magnetic sending unit to front wheel drive clutch housing | 12 to 15 Nm (9 to 11 ft-lb) | p. 305 |
| Thickness of an external splined brake disk - Thin disk | 2.30 mm (0.091 in.) | p. 423 |
| Thickness of an external splined brake disk - Thick disk | 4.37 to 4.63 mm (0.172 to 0.182 in.) | p. 423 |
| Adjustment pressure of double-acting shock valves | 21000 kPa (210 bar; 3050 psi) | p. 610 |
| Cover to housing, cap screws | 30 to 35 Nm (23 to 25 ft-lb) | p. 610 |
