Allis-Chalmers 73 and 74 Series Planting Units Operator's Manual
Allis-Chalmers 73 and 74 Series Planting Units Operator's Manual
108 Pages
This manual is available in: Digital Download
Allis-Chalmers 73 and 74 Series Planting Units Manual Overview
This downloadable Allis-Chalmers 73 and 74 Series planting units manual is the original factory operator’s guide for setup, operation, field service and adjustment of AC 73 and 74 planting units. Whether you are restoring vintage Allis-Chalmers planting equipment or keeping a working planter ready for spring, this manual gives you the detailed instructions you need for accurate and reliable seeding.
The 108-page operator’s manual covers safety, seed handling, planter monitor systems, herbicide and insecticide application, and complete setting and setup procedures. It is the essential reference for anyone running 73 or 74 series planting units on the farm or in the field.
Contents of the AC 73–74 Planting Units Manual
General Sections
- To Our Customer
- User’s Responsibility – Warranty
- Safety Precautions
- General Information
Operation – 73 and 74 Series Planting Units
- Leveling planter units
- Seed hopper and false ring
- Center bearing and cut-off tongue
- Changing seed plates
- Inspecting seed hoppers
- Planting maize and other small seed
- Small seed hoppers (73–74 units)
- Acid delinted cotton seed
- Beet seed
- Seed plate selection
- Plant population and seed spacing charts
- Planting suggestions
- Scrapers and seed press wheel
- Depth bands – 74 units
- Disc furrowers
- Gauge wheels with disc or knife coverers
- Weight transfer spring
- Down pressure spring attachment
- Covering equipment with and without gauge wheels
- Depth skid – 73 unit only
- Seed monitor and planter monitor system
- Console display and console wiring
- Battery connections, signal cable and planter harness
- AC-3 counting monitor
Field Service Tips
- Model AC-1 non-counting monitor
- Model AC-3 counting monitor – 73–74 planting units
Herbicide and Insecticide Application
- Metering control
- Chemical application and rate of application
- Field operation
- Metering gate slide setting
- Cleaning herbicide and insecticide hoppers
Reference Charts
- Metric information
- Torque chart
Setting Up 73 and 74 Series Planting Units
- General setup procedures
- Press wheel adjustments
- Gang arm brackets
- Parallel links
- Unit drive chain
- Dirt scraper
- Seed press wheel – 74 unit
- Seed press wheel – 73 unit
- Depth gauge wheel
- Covering equipment with and without gauge wheels
- Depth band – 74 unit only
- Down pressure springs
- Disc furrow attachment
- Insecticide and herbicide attachments
- Insecticide and herbicide drive
- Herbicide fan and insecticide drop tube
- Insecticide fan and combination drive configuration
- Herbicide fan windshield
- Monitor, sensor and console installation
- Battery connections and signal cable routing
- Planter harness servicing
- Planter monitor test unit
- Console tests – 4, 6, 8 and 12-row consoles
- Servicing photo-electric planter monitor sensors
- Monitors and sensors product service guide
Manual Code: 261571
For more vintage Allis-Chalmers planter and tractor books, see our Allis-Chalmers manuals collection. This Allis-Chalmers 73 and 74 Series planting units manual is delivered as a high-quality, searchable PDF so you can zoom in on diagrams and print only the pages you need in the shop or field.