John Deere 644K Loader Index:

01 Wheels, Tires and Tracks
0110 Powered Wheels, Tires & Fastenings ……………………………………………………………………………………………………………………………………….. 97
02 Axles, Differentials & Suspension Systems
0201 Drive Axle Hsg & Support (Inc. Final Drives) …………………………………………………………………………………………………………………………… 107
0242 Axle Mounting Parts……………………………………………………………………………………………………………………………………………………………… 121
0263 Lines, Hose & Fittings…………………………………………………………………………………………………………………………………………………………… 127
0264 Final Drive Filter, Cooler and Aux. Reservoir …………………………………………………………………………………………………………………………… 139
0278 Axle Temperature Sensor ……………………………………………………………………………………………………………………………………………………… 147
02B Front Axle with Differential Lock – 1400 Series TeamMate™ V YZ19839-YZ19839
0200B Front Axle with Differential Lock – 1400 Series TeamMate™ V YZ19839 …………………………………………………………………………………… 152
02C Rear Axle with Standard Differential – 1400 Series TeamMate™ V YZ19840-YZ19840
0200C Rear Axle with Standard Differential – 1400 Series TeamMate™ V YZ19840 …………………………………………………………………………….. 168
02D Rear Axle with Differential Lock – 1400 Series TeamMate™ V YZ19841-YZ19841
0200D Rear Axle with Differential Lock – 1400 Series TeamMate™ V YZ19841 …………………………………………………………………………………… 186
03 Transmission
0325 Input Drive Shafts & U-joints………………………………………………………………………………………………………………………………………………….. 207
0341 Housing, Covers & Complete Transmissions …………………………………………………………………………………………………………………………… 217
0350 Gears, Shafts & Power Shift Clutches …………………………………………………………………………………………………………………………………….. 222
0351 Gears, Shafts, Bearings & Seals ……………………………………………………………………………………………………………………………………………. 271
0363 Transmission Oil Lines …………………………………………………………………………………………………………………………………………………………. 275
04A Engine 6068HDW83-RE541322
0400A Engine 6068HDW83…………………………………………………………………………………………………………………………………………………………… 284
04B Engine 6068HDW80-RE536782
0400B Engine 6068HDW80…………………………………………………………………………………………………………………………………………………………… 416
05 Engine Auxiliary System
0505 Cold Weather Starting Aids …………………………………………………………………………………………………………………………………………………… 545
0511 Radiator & Fan Shroud …………………………………………………………………………………………………………………………………………………………. 553
0512 Fan…………………………………………………………………………………………………………………………………………………………………………………….. 567
0515 Engine Speed Controls…………………………………………………………………………………………………………………………………………………………. 583
0520 Intake System ……………………………………………………………………………………………………………………………………………………………………… 587
0530 External Exhaust Systems…………………………………………………………………………………………………………………………………………………….. 599
0540 Engine Mounting………………………………………………………………………………………………………………………………………………………………….. 609
0560 External Fuel Supply Systems……………………………………………………………………………………………………………………………………………….. 615
09 Steering System
0930 Emergency Steering …………………………………………………………………………………………………………………………………………………………….. 635
0962 Steering Valve & Control……………………………………………………………………………………………………………………………………………………….. 643
0963 Steering Lines, Hoses & Fittings…………………………………………………………………………………………………………………………………………….. 663
0965 Steering Cylinders ……………………………………………………………………………………………………………………………………………………………….. 669
0974 Wiring Harness & Switches …………………………………………………………………………………………………………………………………………………… 677
10 Service Brakes
1062 Service Brake Valve……………………………………………………………………………………………………………………………………………………………… 683
1063 Service Brake Links, Hoses & Fittings…………………………………………………………………………………………………………………………………….. 687
1064 Reservoir & Accumulator ………………………………………………………………………………………………………………………………………………………. 693
11 Parking Brakes
1115 Controls Linkage ………………………………………………………………………………………………………………………………………………………………….. 699
13 Miscellaneous Vehicle
1322 Labels & Trademarks……………………………………………………………………………………………………………………………………………………………. 707
1330 Shipping & Packaging…………………………………………………………………………………………………………………………………………………………… 729
1369 Greases, Oils, Fuels & Coolants…………………………………………………………………………………………………………………………………………….. 733
1370 Lubrication Systems …………………………………………………………………………………………………………………………………………………………….. 741
15 Equipment Attaching
1520 Hitches & Hitch Pins …………………………………………………………………………………………………………………………………………………………….. 747

16 Vehicle Electrical Systems
1671 Batteries, Support & Cables ………………………………………………………………………………………………………………………………………………….. 757
1672 Alternator, Regulator & Charging System Wiring………………………………………………………………………………………………………………………. 763
1673 Vehicle Lighting System………………………………………………………………………………………………………………………………………………………… 773
1674 Wiring Harness & Switches (If Not Included Elsewhere) ……………………………………………………………………………………………………………. 819
1676 Instruments & Indicators ……………………………………………………………………………………………………………………………………………………….. 887
17 Frame Chassis Or Supporting Structure
1741 Engine Or Main Frame …………………………………………………………………………………………………………………………………………………………. 895
1743 Hinges, Yokes & Gudgeons…………………………………………………………………………………………………………………………………………………… 899
1746 Frame bottom guards (if special) ……………………………………………………………………………………………………………………………………………. 903
1749 Chassis Weights ………………………………………………………………………………………………………………………………………………………………….. 911
18 Operator’s Station
1807 Special Noise Control Items ………………………………………………………………………………………………………………………………………………….. 919
1810 Operator Enclosure………………………………………………………………………………………………………………………………………………………………. 923
1811 ROPS, FOPS, OPS, Or Body Frame………………………………………………………………………………………………………………………………………. 933
1812 Platform ……………………………………………………………………………………………………………………………………………………………………………… 943
1813 Body Sides, Doors, Shields And Glazing…………………………………………………………………………………………………………………………………. 947
1814 Windshield & Wipers…………………………………………………………………………………………………………………………………………………………….. 951
1816 Instrument & Control Mounting Structure ………………………………………………………………………………………………………………………………… 957
1821 Seat And Seat Belts……………………………………………………………………………………………………………………………………………………………… 967
1822 Steps & Handholds ………………………………………………………………………………………………………………………………………………………………. 985
1831 Heater, Hoses & Controls ……………………………………………………………………………………………………………………………………………………… 997
1832 Air Cond System Compressor & Drive ………………………………………………………………………………………………………………………………….. 1011
1833 Condenser, Evaporator & Lines……………………………………………………………………………………………………………………………………………. 1015
1835 Pressurizer………………………………………………………………………………………………………………………………………………………………………… 1033
19 Sheet Metal & Styling
1911 Hood & Hood Supports ……………………………………………………………………………………………………………………………………………………….. 1041
1912 Engine Sideshields …………………………………………………………………………………………………………………………………………………………….. 1045
1913 Miscellaneous Shields ………………………………………………………………………………………………………………………………………………………… 1049
1927 Fenders…………………………………………………………………………………………………………………………………………………………………………….. 1057
20 Safety, Convenience & Miscellaneous
2001 Radio ……………………………………………………………………………………………………………………………………………………………………………….. 1073
2002 Mirror ……………………………………………………………………………………………………………………………………………………………………………….. 1087
2003 Fire Extinguisher………………………………………………………………………………………………………………………………………………………………… 1095
2004 Warning Devices Including Horn & Reverse Alarm …………………………………………………………………………………………………………………. 1099
2007 Sun Visor ………………………………………………………………………………………………………………………………………………………………………….. 1119
2008 Reflectors & SMV Sign ……………………………………………………………………………………………………………………………………………………….. 1123
2010 Miscellaneous ……………………………………………………………………………………………………………………………………………………………………. 1129
2013 Anti-Theft ………………………………………………………………………………………………………………………………………………………………………….. 1135
2014 Locking Bar……………………………………………………………………………………………………………………………………………………………………….. 1139
21 Vehicle Main Hydraulic System
2161 Hydraulic Pumps & Drives …………………………………………………………………………………………………………………………………………………… 1145
2162 Hydraulic Selective Control & Load Holding Valves ………………………………………………………………………………………………………………… 1149
2163 Hydraulic Lines & Hoses……………………………………………………………………………………………………………………………………………………… 1157
2164 Hydraulic Reservoir, Filter & Cooler………………………………………………………………………………………………………………………………………. 1161
26 Global Vehicle Communication
2601 Communication Controller …………………………………………………………………………………………………………………………………………………… 1169
2602 Antennas and Cables …………………………………………………………………………………………………………………………………………………………. 1174
2603 Wiring Harnesses and Switches …………………………………………………………………………………………………………………………………………… 1178
31 Loader
3101 Cutting Edge ……………………………………………………………………………………………………………………………………………………………………… 1185
3102 Bucket (Including Teeth) ……………………………………………………………………………………………………………………………………………………… 1195

3103 Forks………………………………………………………………………………………………………………………………………………………………………………… 1213
3104 Attachment Coupler ……………………………………………………………………………………………………………………………………………………………. 1217
3141 Main Frame……………………………………………………………………………………………………………………………………………………………………….. 1231
3143 Moveable Frame (Lift Arm, Etc)……………………………………………………………………………………………………………………………………………. 1239
3145 Bucket Loader Linkage ……………………………………………………………………………………………………………………………………………………….. 1251
3162 Control & Load Holding Valves …………………………………………………………………………………………………………………………………………….. 1267
3163 Lines, Hoses & Fittings ……………………………………………………………………………………………………………………………………………………….. 1373
3165 Hydraulic Cylinders…………………………………………………………………………………………………………………………………………………………….. 1415
3166 Automatic Control Function …………………………………………………………………………………………………………………………………………………. 1431