Rooted in the Soil. Built for Producers.
For over three decades, Davs Farm Equipment has stood behind Midwest and Plains agricultural producers with heavy-duty machinery and rigorous mechanical certification.
From a Heartland Repair Bay to Our Central Iowa Dealership Yard
Davs Farm Equipment was founded in 1994 by Dave McCallister with a straightforward mission: deliver machinery that actually holds up to grueling 18-hour harvest shifts, backed by honest technical advice rather than pushy sales talk.
Today, Davs operates our flagship dealership inventory, housing high-horsepower row crop tractors, combine harvesters, planters, and commercial tillage implements.
We deliberately do not sell light consumer hobby tools. We specialize exclusively in heavy production equipment engineered to endure thousands of demanding field hours.
The Davs Operating Code
Every tractor and machine on our yard is guided by these three non-negotiable promises.
Zero Guesswork Mechanical Standards
We never list pre-owned equipment without comprehensive dynamometer testing, hydraulic pressure calibration, and fluid analysis. If a machine isn’t field-ready, it never leaves our yard.
Field Performance Guarantee
When tight planting and harvesting windows open, every hour counts. We calibrate every machine before delivery to ensure it arrives ready to work immediately.
Straightforward Grower Pricing
No hidden dealer prep fees or unexpected documentation markups. Clear titles, transparent trade-in valuations, and straightforward terms.
The Davs 120-Point Certification Protocol
Before any piece of certified pre-owned equipment is listed in our inventory, it must pass five intensive diagnostic phases.
Engine Dynamometer & Transmission Verification
Every tractor is connected to our yard PTO dynamometer under full continuous rated load to verify engine horsepower output, fuel rail pressure, and cooling system efficiency.
- Engine oil spectrochemical analysis (testing for iron, copper, coolant intrusion)
- PowerShift / CVT clutch pack calibration and electronic pressure curve logging
- DEF dosing valve and SCR emissions temperature verification
- Turbocharger boost pressure and intercooler pressure test
Hydraulic Flowmeter & PTO Torque Testing
Flow meters verify that every selective control valve (SCV) hits peak GPM flow under 3,000 PSI pressure, ensuring demanding air seeders and high-speed planters operate without hesitation.
- Main hydraulic pump flow test across low and high engine idle RPMs
- PTO brake holding torque and dual-speed clutch engagement test
- 3-point hitch draft sensing calibration and lift cylinder seal inspection
- SCV flow priority testing under simultaneous dual implement loads
Structural Chassis, Track Belts & Running Gear
Testing of high-stress drawbars, axle housings, and frame pivot points to guarantee structural integrity across rocky or rough terrain.
- Rubber track guide block wear analysis and mid-roller bearing fluid check
- Front axle mechanical suspension accumulators nitrogen charge test
- Kingpin, tie rod, and steering cylinder seal ultrasound check
- Cab suspension air bladder leveling and active dampening verification
Precision Ag Guidance & ISOBUS Diagnostics
Full bench calibration of GPS receivers, steering angle controllers, and display firmware to eliminate heading drift and ensure repeatable sub-inch RTK passes.
- Antenna signal-to-noise ratio verification on multiple satellite constellations
- ISOBUS Virtual Terminal communication handshake check with implements
- Section control and prescription map import/export stress testing
- Firmware update and clean flash of all electronic control units (ECUs)
Experienced Ag Specialists
Meet the equipment advisors and precision specialists leading our yard operations.
Dave McCallister
Sarah Jensen
Marcus Vance
