John Deere 2250, 2450, 2650, 2650N, 2850 Tractors Repair Technical Manual

Table of Contents(Repair Technical Manual – TM4440)

05-SAFETY
10-GENERAL
05-Specifications
10- Predelivery, delivery and after-sales inspections
15-Lubrication and service
20-Tune-up
25-Tractor separation
20 -ENGINE
05- Radiator, viscous fan drive and fan
30- FUELAND AIR INTAKESYSTEM
05- Fuel tank, auxiliary tank and water trap
10-Cold weather starting aids
15-Speed control linkage
20-Air cleaner
40- ELECTRICAL SYSTEM
05-Wiring harnesses
10- Controls and instruments (withSG2 cab)
15-Controls and instruments (without cab)
20-Controls and instruments (with MC1 cab)
21-Adjusting digital speed-hour-meter
25-Lighting system
30- Starting motor
35- Alternator
50-POWER TRAIN
05- Clutch operating systems
10-Single-stage engine clutch
15- Dual-stage engine clutch
20- Hi-Lo shift unit
25-Creeper transmission
26- Hydrostatic creeper transmission
30-Transmission-console shift
35-Transmission-center shift
40-Synchronized transmission and transmission oil pump
45-Collar shift transmission and transmission oil pump
50- Differential
55- Final drives
60- Independent PTO shafts
65- Continuous running PTO
70-Front PTO
75- Front wheel drive u.j. drive shaft and disk clutch
50-STEERING SYSTEM AND BRAKES
05- Hydrostatic steering
10-Steering cylinder (without front wheel drive)
15- Power steering
20- Manual steering
25- Hydraulic brakes
30-Handbrake
35- Hydraulic trailer brake
70- HYDRAULIC SYSTEM
05-Valves
10- Hydraulic pumps
15-Rockshaft
25- Selective control valves (spool-type)
30-Selective control valves (poppet-valve type)
35- ISO breakaway couplers
40- ISO quick couplers
45- Remote cylinder
80- MISCELLANEOUS
05- Front axle
10- Front and rear wheels
15- ”AXLA” pickup trailer hitch
20- Height-adjustable trailer hitch
90- OPERATOR’S STATION
05- Safe handling of refrigerants
06-Servicing air conditioning system
07- Compressor (up to tractor Serial No. 646 949L)
08- Compressor (from tractor Serial No. 646 950L)
09- Components of air conditioning system
10-Cab ventilation and heating (SG2 cab)
15- Cab ventilation and heating
(SG2 low-profile cab)
20- Cab ventilation and heating (MC1 cab)
25- Operator’s seats 30- SG2 cab
35-MC1cab
40 -2-post roll guard
45-4-post roll guard

This Unit of the Service Manual contains maintenance instructions for the Model 2250, 2450, 2650, 2650N, 2850 Tractors.
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.