The West Texas Farmer's Center Pivot Spring Startup Checklist (2026)

# The West Texas Farmer's Center Pivot Spring Startup Checklist (2026)

Planting season is six to eight weeks out. If you're running corn or cotton, your irrigation system needs to be ready before the soil temperature hits that critical threshold — not after. Every year, we get calls from producers who fired up a pivot in late April only to find a blown hydraulic hose, a seized gearbox, or a pump that's been silently cavitating since last fall. Those calls cost time and money at the worst possible moment. Running through a systematic center pivot spring startup inspection right now — in March, when there's still time to order parts and schedule service — is one of the best investments you can make before the season begins.

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Before You Power On: Visual Inspection Checklist

Before you flip a single switch, put on your boots and walk the pivot. All of it. Here's what you're looking at:

Walk the full pivot length

• • Look for leaning towers — winter winds, soil heave, and wet field conditions can shift tower alignment
• • Check for bird nests in electrical panels and motor housings — a common problem and a real fire hazard
• • Look for physical damage to spans: bent tubes, broken braces, or anything that took a hit during harvest or winter fieldwork
• • Inspect the soil around tower pads — soft or washed-out areas can cause tower sinking during the season

Gearbox and drive inspection (all systems)

• • Check oil levels in all tower gearboxes — low oil is the number one cause of premature gearbox failure
• • Look for oil staining on the ground beneath each gearbox, which indicates a leaking seal
• • Inspect the drive shafts for rust, pitting, or damage at the U-joint connections

T-L Hydraulic System — Reservoir and Lines

If you're running a T-L pivot, this is where you start:

• • Check the hydraulic oil reservoir level at the main power unit
• • Inspect the condition of the oil — pull the dipstick and look at the fluid. Clear or light amber is good. Milky oil means water contamination. Dark or burnt-smelling oil means it's past due for a change
• • Walk every hydraulic supply and return line on the machine and look for cracking, abrasion wear, or fitting corrosion
• • Pay close attention at tower control valve connections — these see the most movement and are the most common leak points
• • West Texas UV exposure degrades hose materials faster than most regions. If hoses are showing surface crazing or stiffness, plan to replace them before mid-season

Wheels and tires

• • Check tire pressure on every drive wheel — tires that sat flat or underinflated all winter can develop flat spots that cause tracking issues
• • Look for cracking on tire sidewalls — UV and ozone degradation are real out here
• • Inspect wheel bolts for rust and proper torque

Span cables

• • Check tension on all span cables — cables can stretch or lose tension over winter
• • Look for broken strands at anchor points and mid-span
• • A sagging span will cause alignment problems during operation

Sprinkler heads and drop hoses

• • Walk the span and check every sprinkler nozzle for clogs, missing pressure regulators, and worn nozzle plates
• • Check all drop hose connections — look for UV cracking along the hose body and at the poly pipe fittings
• • Inspect check valves at each drop (if equipped) — these prevent drainage and are critical for uniform startup

Center pivot point

• • Check the main swivel bearing — look for visible wear, roughness, or leaking grease
• • Inspect all electrical connections at the pivot point for corrosion and secure termination
• • Check the pivot point water supply connection and any above-ground pipe fittings for seal integrity

Main power panel

• • Open the main disconnect and visually inspect the interior — look for insect activity, moisture, and corrosion on terminals
• • Check breaker condition and tighten any loose terminal connections

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Well and Pump Pre-Season Check

Your pivot is only as good as the water it can deliver. Don't let a pump problem be your first discovery in May.

• • Prime the pump if it's a surface centrifugal unit — check foot valve function before priming
• • Inspect the pump shaft seal — look for water staining or active dripping around the mechanical seal housing; a failing seal will worsen rapidly under full-season load
• • Verify pump operating pressure — know your design operating pressure and confirm the pump is reaching it; a significant drop from prior seasons often indicates wear ring erosion or impeller damage
• • Check pressure gauge and flow meter — replace gauges that are fogged, stuck, or reading obviously out of range; a bad gauge is worse than no gauge because it gives you false confidence
• • Inspect foot valve and check valve — pull and clean if you have access; check valves that don't seat fully cause pressure loss and back-spinning
• • Consider pulling the well pump if it's been three or more years since inspection — submersible pump motors and columns that fail in-season mean days of downtime, not hours
• • Check power supply phase balance at the pump panel — single-phasing is one of the leading causes of submersible pump motor burnout and may not trigger a standard breaker; a phase monitor or phase protection relay is worth the investment
• • Run the pump briefly before connecting to the pivot — flush winter sediment and verify pressure before sending that water through your sprinkler system

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Control Panel and Electrical Check

Once the visual inspection is done and the pump checks out, work through the electrical and control systems.

Main pivot control panel

• • Test forward and reverse operation at slow speed before committing to a full run
• • Verify end gun activation and cutoff — confirm the end gun solenoid is firing and the gun itself is not clogged from last season
• • Check all fuses and replace any that look corroded or show signs of overheating at the connection

T-L Hydraulic Control System

• • Test all tower control valves from the panel — each tower should respond smoothly to forward and reverse commands
• • Check tower control boxes at each tower for water intrusion or animal damage over winter
• • Verify the system can be cleanly stopped and started from the main panel without pressure spikes or sluggish response
• • Confirm your hydraulic pressure gauge at the main unit is reading in the normal operating range during a controlled test cycle

Safety systems

• • Test the safety reverse function — if the end of field switch is not triggering a clean stop, do not run the pivot unattended
• • Walk and manually trip each tower end switch to confirm function
• • Verify alignment switch function at each tower — misalignment that goes undetected can result in a bent span

Remote monitoring (if equipped)

• • If you're running PACE, FieldWise, or any telemetry system, log in and confirm the connection is live before the season
• • Set your alert thresholds — pressure alarms, motor runtime alerts, and end-of-field notifications can catch problems before they become disasters
• • Update contact numbers and verify alert delivery to your phone

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First Run Procedure

You've done the inspection. The pump checks out. Everything looks good. Here's how to run the first circle:

1. Set the timer to a slow speed (high timer setting) for the first full revolution — this lets you walk the machine and watch every tower without rushing 2. Walk behind the pivot and observe each tower as it moves — watch for dragging, hesitation, or towers pulling out of alignment 3. Check every flex joint and span connection for leaks once water pressure is up — a slow drip at a coupler is much easier to deal with now than after the ground is soaked 4. Monitor hydraulic pressure (T-L systems) throughout the run — pressure should remain stable and within the manufacturer's specified range; fluctuating pressure often points to a partially restricted tower control valve or low fluid level 5. Look at water distribution across the entire span — watch for dry zones (clogged or missing nozzles) and over-application areas (blown nozzle plates or disconnected drops) 6. Note the end gun pattern — confirm coverage is reaching target and that the gun is shutting off in corners or non-irrigated zones as designed

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Scheduling Your Professional Service Call

There's a reasonable list of items you can check yourself with this guide. There's also a list of items that need a technician.

Handle yourself:

• • Visual walk inspection
• • Oil and fluid level checks
• • Tire pressure and cable tension
• • Basic control panel function tests
• • Remote monitoring setup

Call Pro-Tech for:

• • Any hydraulic leaks at tower valve bodies or hose fittings
• • A tower that is lagging, not tracking, or pulling out of alignment during the first run
• • Pump pressure significantly below design operating pressure
• • Phase imbalance or electrical faults at the power panel
• • End gun not operating correctly
• • Unusual noises at gearboxes — grinding, clanking, or intermittent engagement sounds
• • Anything involving the main swivel bearing or center pivot point electrical connections

A note on scheduling: Service demand in West Texas peaks in April and May. If you wait until your pivot has a problem during planting, you'll be competing with every other producer in the region for the same service slot. Call Pro-Tech now to get on the spring startup calendar. We offer professional startup inspections across West Texas, and early-season slots go fast.

We also offer annual service contracts for producers who want scheduled maintenance rather than reactive repairs — ask about options when you call. See our agricultural consulting services for more on how we support farm-level irrigation planning.

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T-L Hydraulic System: Spring-Specific Tips

If you're running a T-L pivot, you already know the hydraulic drive is the core of what makes these machines different. Here's what to focus on specifically for spring startup:

Hydraulic fluid condition

This is the single most important maintenance item on a T-L system. Check the fluid at the reservoir:

• • Clear to light amber: good — check level and continue
• • Milky or cloudy: water contamination — drain and replace before operating
• • Dark brown or burnt-smelling: oxidation from heat cycling — replace, and look for a restriction causing excess heat

If it's been two or more years since a full hydraulic fluid change, change it before the season. This is inexpensive insurance against component wear.

Hose inspection — West Texas specific

The UV index in West Texas is brutal. Hydraulic hoses that look fine in moderate climates will show surface crazing, brittleness, and micro-cracking out here in three to four years. Squeeze the hose — it should have some flex. A hose that feels stiff and hard is at end of service life. Replace before it fails under pressure in the field.

Tower synchronization

On a properly functioning T-L system, all towers should move simultaneously and at the same rate. If one tower is lagging, it means that tower is not receiving adequate hydraulic flow. Common causes:

• • Restricted or failing tower control valve
• • Partially closed isolation valve (check that all isolation valves are fully open)
• • Air in the hydraulic circuit
• • Internal bypass in the tower motor

A lagging tower that goes uncorrected will cause alignment problems and span damage. If you see it during your first run, stop and call Pro-Tech before continuing.

DIY diagnostic mindset

One of the genuine strengths of the T-L hydraulic system is its diagnostic simplicity for experienced operators. If you're comfortable diagnosing your tractor hydraulics — checking pressure, isolating circuits, and reading system behavior — you can apply those same skills to basic T-L troubleshooting. The system runs on the same hydraulic principles. Use that knowledge, but know when to hand it off.

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Quick Reference Spring Startup Checklist

| Item | Check | Notes | |------|-------|-------| | Tower alignment | Walk full span | Look for lean, soft ground at pads | | Bird nests in panels | Visual | Fire hazard — clear before powering on | | Span cable tension | Visual + physical check | Replace frayed cables | | Gearbox oil levels | Check all towers | Refill with correct grade | | Gearbox leaks | Look for oil on ground | Note leaking towers for service | | Drive wheels and tires | Pressure + visual | Inflate to spec, check for flat spots | | T-L hydraulic fluid level | Reservoir dipstick | Top off if needed | | T-L hydraulic fluid condition | Color and smell | Milky = water contamination, replace | | Hydraulic hoses | Visual + squeeze test | Replace cracked or stiff hoses | | Drop hoses | Visual | Look for UV cracking at fittings | | Sprinkler nozzles | Walk span | Clear clogs, replace worn plates | | Center pivot swivel bearing | Visual | Look for roughness, grease leaks | | Pivot point electrical | Inspect connections | Check for corrosion, loose terminals | | Main power panel | Open and inspect | Look for insect/moisture damage | | Pump shaft seal | Visual inspection | Replace if leaking | | Pump operating pressure | Gauge reading | Compare to design spec | | Foot valve / check valve | Function test | Pull and clean if accessible | | Control panel operation | Forward, reverse, end gun | Confirm all functions | | Safety reverse / end stop | Manual test | Do not skip this step | | Tower control valves (T-L) | Panel test | Confirm each tower responds | | Remote monitoring | Login and verify | Set alerts before first run | | First run speed | Slow (high timer) | Walk behind to observe | | Tower synchronization (T-L) | Observe during first run | All towers should move together |

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Get Pro-Tech on Your Spring Startup Schedule

This checklist will get you through a solid self-inspection. But if you found something during your walkthrough, or if you want a certified technician to run through this process with you before you start your first irrigation cycle, Pro-Tech is here.

We've been doing this for 25-plus years in West Texas. We know T-L systems, we know the specific demands of this climate, and we know what problems look like before they become expensive. Spring startup service slots are filling up now — don't wait until April when the calendar is full and your neighbors are already irrigating.

Contact Pro-Tech to schedule your spring startup inspection — or call Chris directly. We serve producers across West Texas and want to help you start the season right.

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Looking for more seasonal irrigation guidance? See our West Texas Summer Irrigation Checklist for in-season management tips, or read up on EQIP irrigation cost-share options in Texas if you've been thinking about upgrading your system before next season.