7 Supplies for Checking Hay Elevator Chain Tension

Moving hay is hard work, but a malfunctioning hay elevator makes it a nightmare. Keeping the elevator chain at the perfect tension prevents costly mid-season breakdowns and dangerous derailments. Having the right tools on hand ensures this quick maintenance task is done safely and accurately before the next wagon arrives.

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Why Proper Hay Elevator Chain Tension Matters

A loose hay elevator chain is an accident waiting to happen, often leading to derailed flights, bent links, or a completely jammed drive sprocket right in the middle of a hot afternoon. Conversely, an over-tightened chain places immense strain on the bearings, shaft, and electric motor, leading to premature wear and expensive component failures. Finding the sweet spot keeps the bales moving smoothly up the trough without putting unnecessary stress on the machinery.

Proper tension also ensures even wear across the entire length of the chain and sprocket teeth. On a hobby farm, where equipment might sit idle for months before being pressed into intense service, keeping the tension dialed in prevents the chain from binding or jumping when it is restarted. Regular checks save time, money, and the physical exhaustion of manual unloading when the machine fails.

Safety Precautions Before Inspecting Your Chain

Never attempt to inspect, measure, or adjust a hay elevator chain while the power source is connected. Locking out the power means unplugging the electric motor or disconnecting the PTO shaft from the tractor completely. A sudden start-up can cause catastrophic injury, as the aggressive steel flights on the chain will catch loose clothing or fingers instantly.

Ensure the elevator is positioned on stable, level ground and lowered to its safest working height before beginning. Working on a steep incline increases the risk of the elevator tipping or the chain shifting unexpectedly under its own weight. If the elevator must remain raised, secure the frame with heavy-duty jack stands or safety chains to prevent accidental collapse.

Tape Measure – Stanley PowerLock 25-Foot Tape

Measuring chain slack requires a reliable, rigid measuring tool to gauge the distance between the chain and the elevator bed. A flimsy tape measure will bend and twist when trying to reach into the narrow channel of the elevator trough. The tape measure establishes the baseline measurement needed to determine if the chain has stretched beyond acceptable operating limits.

The Stanley PowerLock 25-Foot Tape is the ideal choice for this task due to its classic, rugged metal case and secure blade lock. Its Mylar-coated polyester film blade resists the abrasive dust, rust, and chaff common around hay equipment. The 1-inch blade width provides excellent standout, allowing for easy one-handed measurements inside the deep trough.

While highly durable, the blade can still rust if left in a damp barn, so keeping it wiped down after use is essential. The spring return is powerful, so care should be taken when retracting the tape near delicate chain components.

• Blade Length: 25 feet
• Blade Width: 1 inch
• Case Material: Chrome-plated ABS plastic
• Best for: Measuring chain deflection, checking frame alignment, and general farm layout tasks

This tape measure is perfect for any hobby farmer who values classic, dependable durability over cheap plastic alternatives. It is not the right choice for those who prefer digital readouts or need a lightweight, pocket-sized tape for light-duty indoor tasks.

Work Gloves – Wells Lamont HydraHyde Leather Gloves

Handling a heavy, grease-coated steel chain exposes hands to sharp metal burrs, rusty edges, and pinching hazards. Work gloves protect the skin while providing the necessary grip to pull, lift, and inspect individual chain links. Without them, even a minor slip can result in painful cuts that are highly susceptible to infection from barnyard dust.

The Wells Lamont HydraHyde Leather Gloves stand out because of their water-resistant grain cowhide leather, which stays soft and pliable even after getting wet. The reinforced leather palm patch offers extra protection against the abrasive edges of the elevator flights. The keystone thumb design ensures maximum dexterity, allowing for easy handling of small take-up bolts and cotter pins.

Because they are genuine leather, these gloves require a brief break-in period before they achieve maximum flexibility. They should be allowed to air-dry away from direct heat sources to prevent the leather from shrinking or cracking over time.

• Material: HydraHyde grain cowhide leather
• Cuff Style: Slip-on with elastic wrist
• Size Options: Small through Extra-Large
• Best for: Handling heavy chains, operating tension bolts, and clearing debris from the elevator bed

These gloves are a must-have for farmers who need heavy-duty hand protection that survives wet, muddy, or greasy conditions. They are not ideal for those who require ultra-thin, high-dexterity touch-screen compatibility for digital devices.

Tension Gauge – Berkley Digital Utility Scale

Guessing chain tension by feel often leads to over-tightening or leaving the chain too loose. A tension gauge allows the operator to apply a specific, consistent pulling force to the chain to measure its deflection accurately. This scientific approach removes the guesswork and ensures the chain meets the manufacturer’s exact tension specifications.

The Berkley Digital Utility Scale functions beautifully as a DIY tension gauge, offering a clear digital readout up to 50 pounds. Its heavy-duty hook clips securely onto the elevator chain links, allowing for a straight, steady pull. The compact, water-resistant housing is built to withstand the bumps and drops of a working barn environment.

Users must ensure the scale is set to the correct unit of measurement (pounds or kilograms) before pulling on the chain. Because it runs on batteries, keeping a spare set of CR2032 batteries in the toolbox is highly recommended to avoid mid-task delays.

• Weight Capacity: Up to 50 lbs (22.6 kg)
• Display: Backlit digital LCD
• Power Source: 2 CR2032 batteries (included)
• Best for: Measuring precise chain deflection pull force and weighing small farm inputs

This tool is perfect for the detail-oriented hobby farmer who wants to eliminate guesswork and maintain equipment to exact specifications. It is not suitable for those who prefer purely mechanical, battery-free analog scales.

Pry Bar – Tekton 12-Inch Angled Tip Pry Bar

A pry bar is essential for lifting the heavy steel chain away from the elevator bed to check for binding and to test overall slack. It also helps nudge stubborn take-up brackets or frozen adjustment bolts that have rusted in place over the winter. Attempting this with a screwdriver or bare hands can damage the tool or cause painful finger pinches.

The Tekton 12-Inch Angled Tip Pry Bar is engineered with a high-strength square steel shaft that resists bending under heavy loads. The sharpened, angled chisel tip slides easily beneath tight chain links and into small gaps along the elevator frame. The comfortable, high-torque handle provides a secure grip even when hands are sweaty or greasy.

The black oxide finish protects the steel from rust, but it can wear off over time with heavy use, requiring a light coat of oil to prevent corrosion. The plastic handle is durable but should not be struck with a heavy sledgehammer.

• Length: 12 inches
• Shaft Material: High-strength square steel
• Tip Style: Angled chisel tip
• Best for: Lifting chains, aligning take-up brackets, and scraping packed debris from sprockets

This pry bar is ideal for farmers needing a compact, high-leverage tool to manipulate tight mechanical parts. It is not the right choice for heavy-duty demolition work or prying large tractor tires, which require much longer bars.

Work Light – Nebo Slyde King LED Flashlight

Hay elevators are often stored in dark lean-tos, dim barns, or checked late in the evening when the work day finally winds down. A powerful, reliable work light is necessary to inspect the chain links, sprockets, and take-up bolts hidden deep inside the dark metal trough. Without proper illumination, hairline cracks in the links or worn sprocket teeth can easily be missed.

The Nebo Slyde King LED Flashlight is a versatile powerhouse featuring a sliding design that instantly reveals a bright COB LED work light. The powerful magnetic base allows for hands-free operation by sticking the light directly to the steel frame of the elevator. Its rugged, anodized aircraft-grade aluminum body is impact-resistant and water-resistant, making it tough enough for any barn floor drop.

The rechargeable battery is convenient but requires access to a USB power source to top up before a long day of maintenance. The magnetic base is incredibly strong, but users should ensure the mounting surface is clean of grease and hay dust to prevent the light from slipping.

• Brightness: 500 lumens (spotlight), 500 lumens (C.O.B. work light)
• Power Source: USB rechargeable Li-ion battery
• Material: Anodized aircraft-grade aluminum
• Best for: Hands-free machinery inspection, night-time farm repairs, and emergency barn lighting

This light is perfect for the solo hobby farmer who frequently needs both hands free while working in dimly lit spaces. It is not ideal for those who prefer simple disposable-battery flashlights or do not have access to USB charging ports.

Wire Brush – Osborn Steel Wire Scratch Brush

Over time, hay elevators accumulate a stubborn mixture of dried sap, dust, rust, and compacted chaff along the chain and sprockets. This debris must be cleared away before checking tension, as it can artificially stiffen the chain and mask the true amount of slack. A heavy-duty wire brush is the most effective tool for scraping away this build-up without damaging the steel components.

The Osborn Steel Wire Scratch Brush features densely packed, high-carbon steel wire bristles that slice through rust and baked-on organic matter with ease. The ergonomic shoe-handle design protects fingers from scraping against the sharp metal edges of the elevator frame during use. The solid hardwood block provides a sturdy grip and ensures the bristles remain securely anchored even under heavy scrubbing pressure.

The stiff steel bristles can scratch painted surfaces, so care should be taken if preserving the elevator’s cosmetic finish is a priority. Wearing safety glasses during use is highly recommended, as loose rust particles and wire fragments can fly off during vigorous brushing.

• Bristle Material: High-carbon steel wire
• Handle Material: Solid kiln-dried hardwood
• Brush Style: Curved shoe-handle
• Best for: Cleaning rusty chain links, clearing sprocket teeth, and preparing metal surfaces for lubrication

This brush is excellent for anyone dealing with older, neglected farm equipment that requires serious rust and debris removal. It is not suitable for use on soft metals like brass or aluminum, which can be easily gouged by the steel bristles.

Chain Lubricant – Fluid Film Aerosol Lubricant

Once the chain tension is adjusted, applying a high-quality lubricant is vital to prevent friction, wear, and rust during storage. Standard grease or sticky oils are poor choices because they attract abrasive hay dust and chaff, creating a grinding paste that accelerates wear. A specialized lubricant penetrates the tight tolerances of the chain pins while resisting dust attraction.

Fluid Film Aerosol Lubricant is a lanolin-based formula that provides a non-toxic, long-lasting protective barrier against rust and corrosion. Unlike solvent-based lubricants, it does not evaporate quickly and actively resists water wash-off, keeping the chain protected even in damp barn environments. Its unique non-drying film penetrates deep into the chain rollers without attracting excessive dirt and debris.

Because Fluid Film has a distinct, earthy lanolin scent, some users may prefer to apply it in a well-ventilated area. It sprays on relatively thick, so a light, even coat is all that is required to achieve full protection without creating messy runs.

• Base Material: Lanolin-based (solvent-free)
• Application Type: Aerosol spray with extension straw
• Container Size: 11.75-ounce can
• Best for: Lubricating elevator chains, protecting exposed take-up bolt threads, and winterizing farm machinery

This lubricant is perfect for the eco-conscious hobby farmer looking for a non-toxic, highly effective rust preventative that won’t turn into a dust magnet. It is not the right choice for those who require a fast-drying, completely dry-film lubricant for high-speed precision chains.

Step-by-Step Guide to Measuring Chain Slack

To begin, ensure the elevator is completely powered down, unplugged, and secured on level ground. Locate the midpoint of the elevator bed, as this is where the chain will naturally exhibit the most sag or play. Clear away any packed hay debris from this section using your wire brush so you can see the metal surfaces clearly.

Attach the hook of your digital utility scale to a chain link at this exact midpoint. Pull straight upward on the scale with a steady force of 10 pounds while holding your tape measure perpendicular to the elevator bed. Measure the distance the chain lifts away from the steel trough under this specific load.

Compare your measurement to the manufacturer’s recommended deflection, which is typically between 1 and 2 inches of play for standard farm elevators. Repeat this measurement process on both sides of a dual-chain elevator to ensure even wear and alignment. If the deflection is outside this range, adjustments to the take-up bolts are required.

How to Adjust Take-Up Bolts for Correct Tension

Locate the take-up bolts, which are typically found near the intake boot or the discharge head of the elevator. These long threaded rods control the position of the shaft bearings, allowing you to slide the shaft forward or backward to adjust chain tension. Spray the threads with a light coat of lubricant to ease the adjustment process and prevent thread galling.

Loosen the locknuts on both sides of the elevator frame before attempting to turn the main adjustment bolts. Using a matching wrench, turn the adjustment bolts one full turn at a time, alternating side to side to keep the shaft perfectly square with the frame. If you tighten one side significantly more than the other, the chain will track crookedly and derail during operation.

Re-measure the chain deflection after every few turns of the bolts to monitor your progress. Once the chain reaches the correct deflection measurement, tighten the locknuts securely to prevent the adjustment bolts from vibrating loose during operation. Run the elevator empty for a few minutes to verify that the chain tracks straight down the center of the trough.

Establishing a Seasonal Elevator Care Routine

A hay elevator is a seasonal workhorse that spends most of the year sitting idle, making a structured maintenance routine essential for longevity. Perform a comprehensive tension check and lubrication cycle before the first cutting of the season to catch any issues before the hay is on the ground. A mid-season check is also wise if you are putting up multiple cuttings or handling high volumes of heavy, damp bales.

Before storing the elevator for the winter, clean the entire machine thoroughly to remove acidic organic matter that traps moisture and promotes rust. Back off the tension on the take-up bolts slightly during winter storage to relieve constant stress on the bearings and shaft. This simple step prevents the chain from stretching permanently and extends the life of your expensive drive components.

Keep your dedicated elevator maintenance kit stored together in a dry, accessible bucket or toolbox. Having your tape measure, scale, lubricant, and tools ready to go reduces the friction of performing these checks, ensuring your equipment is always ready when the hay is dry and the weather window is short.

Taking the time to properly maintain your hay elevator chain ensures a smooth, stress-free harvest season. With these seven essential supplies in your barn, checking and adjusting tension becomes a quick, precise task rather than a frustrating chore. Keep your equipment running smoothly, protect your investment, and keep those bales moving without interruption.