John Deere 9930 Cotton Picker Parts Catalog (PC2172)

Out in cotton country, the 9930 spends its life in dust, lint, and long harvest days, so parts wear and small hardware disappears. This parts catalog is what I’d pull when I need to identify exactly which components belong on a specific 9930 and how they relate to each other. If a row unit is dragging or a moisture-soaked bearing has failed, I’d use this book to break down the assembly, spot every shim, seal, and fastener, and make sure I order the right revision of each part the first time.

Applications & Use Cases

Trace a picker head or basket assembly in an exploded view to see every sub-component and its order.
Cross-check part numbers when there are multiple design updates or serial breaks for the 9930.
Identify small wear items—bushings, seals, clips, spacers—that are easy to miss when building a parts list.
Verify how components mate together so you can order all related hardware before teardown.
Compare similar variants to confirm which parts actually fit your machine before placing a large order.

FAQ

Q: Can I use this catalog on a tablet in the field?

A: Yes, it’s practical to keep a digital copy on a tablet so you can zoom in on diagrams and search part numbers right at the machine.

Q: Is it worth printing certain pages?

A: Many techs print the views for the assemblies they’re working on, mark them up during teardown, and keep them with the job folder.

Safety Note

Always isolate and secure the picker before inspecting components or matching parts to this catalog.

John Deere 9930 Cotton Picker Index:

GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
FUEL AND AIR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
ELECTRICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
POWER TRAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
STEERING AND BRAKES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
HYDRAULICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
WHEELS, REAR AXLES AND SHEET METAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
OPERATOR STATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
PICKING UNIT LIFT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
PICKING UNIT CABINET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110
PICKING UNIT SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .120
PICKING UNIT LUBRICATION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130
WATER SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140
AIR SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150
BASKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .160
DECALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170
NUMERICAL INDEX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180