Troubleshooting Guide · All 9YF Models · Spring-Tooth and Hammer-Claw

Square Baler Pickup Problems: Tine Wear, Height and Recovery Fixes

Crop left on the ground behind the pickup is direct revenue loss — every pass that misses hay is income that stays in the field. Pickup problems range from simple height adjustment errors that take two minutes to fix to hub bearing failure that requires a service visit. This guide identifies every cause with the specific inspection test and fix for each.

Covers: tine wear inspection · pickup height · hub bearings · cam retraction · crop wrapping · spring-tooth vs hammer-claw · recovery rate targets

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What a Correctly Operating Pickup Looks Like

Before diagnosing a problem, know what correct pickup operation looks like. Standing beside the machine at low operating speed, a correctly functioning pickup should: rotate smoothly with no wobble or side-to-side movement at the hub; have all tines extending fully at the 12 o-clock position and retracting completely before passing the 6 o-clock position; leave no visible stripe of uncollected crop across the windrow width; and make no grinding, clicking or rattling noises beyond the normal mechanical sound of the reel rotation.

Any deviation from this baseline — visible crop left in a regular pattern, noise, wobble or incomplete tine retraction — points to a specific component. The pattern of uncollected crop is particularly diagnostic: a full-width thin stripe across the windrow indicates a height problem; a partial-width stripe at consistent intervals indicates missing or bent tines in a specific reel row; a ragged, uneven pattern across the windrow indicates a cam or retraction problem.

Cause 1: Pickup Height Set Incorrectly — The Most Common Error

The Right Clearance and Why It Matters

The pickup height — the clearance between the lowest tine tip point and the ground surface — is the single most frequently incorrect setting on square balers in active use. The correct clearance for most crops and field conditions is 30–50mm (approximately 1.2–2 inches) from the tine tip to the ground. Below 30mm, the tines contact the ground and scoop soil, debris and stubble into the crop stream, reducing bale quality and increasing wear. Above 60mm, the tines pass over the lower portions of the windrow and leave a stripe of material on the ground.

Too Low (below 30mm)

Tines contact soil surface. Bales accumulate soil and debris. Tine wear rate accelerates. Ash content in hay increases — a problem for export market buyers.

Correct (30–50mm)

Full windrow collection. No soil pickup. Tines operate in the crop material only. Consistent material delivery to the feeder. Check this at the start of each session.

Too High (above 60mm)

Lower windrow material left uncollected. Visible stripe on the ground after each pass. Bales are lighter than expected. Most significant in low-lying windrows after heavy raking.

Adjusting Pickup Height

Height is adjusted via the gauge wheel position on both sides of the pickup reel or by adjusting the pickup lift arms on models with hydraulic or mechanical height control. Adjust both sides equally — uneven height settings cause the pickup to run at a lateral tilt, collecting more from one side of the windrow than the other. After any height adjustment, walk the machine for 20–30 metres at operating speed and visually check that no material stripe remains behind the pickup and no soil is being picked up. Adjust on soft ground, then recheck on firm ground — gauge wheel sinkage varies by soil type and can shift effective clearance by 15–20mm.

Cause 2: Spring Tine Damage — Bent, Missing or Worn

9YF series square balers showing the full model range — the spring-tooth pickup on the 9YF-1700 through 9YF-2200 models uses a reel of spring steel tines that must all be in correct angular alignment and free of bends or breaks for consistent windrow collection across the full pickup width

Spring Tine Inspection Standard

Spring tines on the 9YF-1700, 9YF-1900 and 9YF-2200 are rated for a specific angular range and tip profile. A tine is due for replacement when it meets any of the following criteria: visibly bent more than 15mm from its original straight line when viewed from the side at rest; shortened by more than 10% of original length from tip wear; broken at any point along its length; or sprung to a relaxed angle that differs by more than 10 degrees from adjacent undamaged tines in the same row.

Missing tines are an immediate priority — each missing tine leaves a gap in the pickup face that produces a consistent stripe of uncollected material across the windrow at that tine spacing interval. In a dense windrow with a well-matched forward speed, a single missing tine can leave 10–15% of the crop from that lateral position uncollected per pass.

Replacement Approach

Replace all damaged tines in a single service rather than replacing individual tines as they fail. The reason: individually replacing tines of different ages and wear states creates an uneven pickup face — new tines have a different spring constant from used tines and deliver non-uniform force across the reel width. At the same pickup height, a reel with mixed-age tines collects unevenly, producing a windrow feed variation that shows as inconsistent bale weight even when other machine settings are correct. Annual tine replacement as a maintenance item — rather than reactive replacement after visible damage — is the correct standard for operations above 200 bales per season.

Cause 3: Hammer-Claw Tine Tip Wear (9YF-2200S and 9YFS-2.2)

The hammer-claw pickup on the 9YF-2200S and 9YFS-2.2 uses rigid cast or forged tines rather than spring steel. The claw tip face that contacts and grips crop material develops a specific wear pattern — the forward contact angle decreases as the tip rounds from abrasion. When the tip angle has worn beyond specification, the claw slides over rather than gripping crop material, reducing recovery rate particularly in thin or fragile windrows where positive tine engagement is needed to lift material from the ground.

Inspect hammer-claw tine tips by comparing the tip face angle to the specification drawing in the operator manual. A tip that has visibly rounded from the original sharp-angle profile is approaching the replacement threshold. Measure the tip width — manufacturer specifications typically call for replacement when tip width has increased by more than 2mm beyond the new-part width at the contact face, indicating excessive rounding.

Hammer-claw tines are more durable than spring tines but significantly more expensive per unit. The replacement schedule is typically every 3–5 seasons for standard hay and straw operation, or every 1–2 seasons in abrasive hard-stalk crops (cotton, corn stover) where tip wear accelerates. Replace as a set across the full reel — as with spring tines, mixed new and worn hammer-claws produce non-uniform pickup performance.

Cause 4: Pickup Hub Bearing Wear or Failure

9YF-2200 square baler showing the pickup reel assembly — the pickup hub bearings support the reel tube and tine drive cam and must be inspected for radial play and noise at the pre-season service as worn bearings allow the reel to wobble laterally producing uneven pickup height across the reel width

Symptoms and Inspection

Pickup hub bearing wear produces a gradual-onset problem: lateral reel wobble increases as bearing play increases, causing the effective pickup height to vary across the reel width. At low bearing wear, the variation is small enough to produce only minor collection inconsistency. As wear progresses, the reel oscillates enough to contact the ground on one side of the pass while running too high on the other — producing a characteristic diagonal stripe pattern in the uncollected crop behind the machine.

To test hub bearing condition: with the PTO completely disengaged and the machine stationary, grasp the pickup reel tube near each hub and attempt to move it radially (in and out, perpendicular to its rotation axis). Acceptable radial play is less than 1mm at the tube surface. Play greater than 2mm at the tube surface indicates a bearing near the replacement threshold. Also rotate the reel slowly by hand — a grinding or gritty resistance that is absent when the hub is hand-warm indicates bearing damage that may not yet produce audible noise at low operating speed but will fail under operating load.

Replacement Schedule

Pickup hub bearings are a standard annual inspection item. Lubricate at the specified grease interval throughout the season — under-greased bearings fail in 1–2 seasons; correctly greased bearings typically last 4–8 seasons in standard hay and straw operation. Replace both hub bearings as a pair when either reaches the inspection limit — running a new bearing against a worn bearing at the opposite hub produces uneven reel support and can accelerate wear of the new bearing from running at a lateral angle.

Cause 5: Cam and Tine Retraction Problems

How Tine Retraction Works and What Fails

The pickup tines extend to collect crop at the front of the reel arc and retract back into the reel tube as they pass the bottom and rear of the rotation. This retraction is controlled by a fixed cam profile that the tine carrier follower rides. If the cam is worn, cracked or misadjusted, tines may not retract fully — remaining partially extended as they pass the bottom of the reel arc where they should be tucked away. A partially extended tine at the bottom of the arc will drag crop backward along the ground rather than depositing it into the feeder, and can pick up soil and debris from the ground surface even when the pickup height is correctly set.

Inspect tine retraction by standing beside the machine with the PTO engaged at low speed and watching the tine tips at the bottom and rear of the reel arc. All tines should be fully retracted — not visible or barely visible — by the time they reach the 6 o-clock position. Any tine that remains more than 10mm extended at 6 o-clock indicates either a worn cam follower for that tine carrier, a cracked or worn cam surface at that angular position, or a bent tine carrier that prevents full retraction travel.

Fix and Adjustment

The cam position adjustment — where available on the model — changes the retraction timing relative to the reel rotation. Cam wear typically produces progressive late retraction, meaning tines retract correctly early in the season and progressively later as the cam surface wears. Cam wear is inspected by measuring the cam profile height at multiple angular positions using a depth gauge. A cam with more than 1.5mm of wear at any measured point requires replacement. Individual tine carrier followers can be replaced without removing the full cam assembly on most 9YF models.

Cause 6: Crop Wrapping Around the Pickup Shaft

Long, stringy or vine-type crop material — cotton plant residue, sorghum vine, lodged wheat stems, climbing weeds — can wrap around the pickup reel tube between the tine rows during operation. The accumulation builds gradually and the operator may not notice until the wrapped material significantly reduces the effective pickup diameter. A heavily wrapped pickup reel has effectively reduced the tine extension radius, producing the same symptom as a reel with worn short tines: incomplete windrow recovery across the full width.

Check the reel tube in wrapping-prone crops every 15–20 bales. Remove any wrapping with a knife — always with the machine completely stopped and the PTO disengaged. Do not attempt to remove wrapping from a rotating reel under any circumstances. Cut the wrapped material in two or three places around the circumference and pull it free rather than attempting to unwind it.

Prevention for wrapping-prone crops: in cotton and sorghum vine conditions, reduce forward speed to allow the tines to engage individual stems rather than scooping masses of entangled material. The hammer-claw tines on the 9YF-2200S are more resistant to wrapping than spring tines because their wider spacing and rigid profile present fewer wrap points than the closely-spaced spring tine array.

Cause 7: Forward Speed vs Pickup Speed Mismatch

square baler collecting a hay windrow at correct forward speed — the ground speed of the machine must be matched to the pickup reel peripheral speed so that tines engage and lift crop material without pushing it forward along the ground which occurs when the machine travels faster than the tine tip speed

The Speed Ratio Concept

The pickup reel peripheral speed — the speed of the tine tips moving through the crop — is fixed by the PTO speed and the reel drive ratio. The forward speed of the machine relative to this tine tip speed determines the pickup angle at which tines engage the windrow. When forward speed is too high relative to tine peripheral speed, tines arrive at the windrow at a shallow angle and tend to push material forward along the ground rather than lifting it. This produces a characteristic rolling-windrow symptom — crop is pushed forward in a continuously growing heap rather than being lifted smoothly.

The correct ratio of forward speed to tine peripheral speed varies by crop type. For standard cured hay in a normal windrow, the tine peripheral speed should be approximately 10–30% faster than the forward ground speed. Maintain rated PTO speed — at below-rated PTO speed, the tine peripheral speed decreases and the forward speed that produces correct pickup angle also decreases proportionally, meaning the correct operating speed is lower when PTO speed is low.

Field Diagnosis

If the windrow material is pushed forward rather than lifted cleanly, reduce forward speed by 20%. If recovery improves immediately, forward speed was the cause. If the crop continues to push forward at reduced speed — with correct pickup height and full tine complement — the reel peripheral speed may be below specification from below-rated PTO speed or from a drive ratio change (check drive sprocket for missing teeth). The 9YF series pickup is designed for 540rpm PTO; at significantly below-rated speed, pickup efficiency decreases even when forward speed is reduced proportionally.

Recovery Rate Targets by Crop and Condition

作物/状况	Expected Recovery Rate	笔记
Well-cured grass hay, standard windrow	95–98%	Reference standard. Any rate below 93% indicates a pickup problem.
Alfalfa, first cut, full stand	92–96%	Some leaf loss from rake stage expected; pickup loss should be minimal.
Wheat / barley straw	88–94%	Brittle stems mean some breakage during pickup is expected; rate below 85% suggests height issue.
Cotton stalk (shredded)	82–90%	Some material loss at rigid stem ends is normal; hammer-claw pickup recommended.
Lodged or mat-lying crop	75–88%	Lower rate is inherent to crop orientation; pickup height at minimum and speed reduced.

square baler producing bales from a hay windrow showing full-width crop recovery — the target recovery rate for standard grass hay in a correctly formed windrow is 95 to 98 percent leaving only minor amounts of fine material on the ground that cannot be practically collected without also picking up soil

PTO Drive and Pickup Speed Reference

agricultural gearbox and PTO shaft specifications for 9YF series square baler pickup drive systems — maintaining rated 540rpm PTO speed ensures correct tine peripheral speed for maximum windrow recovery across all crop types

PTO shaft and gearbox specifications for all 9YF pickup-drive configurations: 农业变速箱和动力输出轴规格

A worn CV joint or undersized PTO shaft causes speed variation at the pickup drive that produces inconsistent tine peripheral speed — the same symptoms as incorrect forward speed. Full driveshaft specifications: PTO传动轴和CV接头尺寸指南.

Frequently Asked Questions — Square Baler Pickup Problems

My baler leaves a thin stripe of hay on one side of the windrow but collects the other side fine. What causes this?+

A consistent stripe on one side of the windrow that is absent on the other side is almost always a pickup height issue — specifically, the pickup running at a lateral tilt with one side too high. Check that both gauge wheels are at the same height setting. If one gauge wheel has a flat tyre, damaged bearing or different setting from the other, the reel tilts and one side of the pickup runs at too great a clearance. Equalise both sides, verify the pickup tube runs level across its full width at operating speed, and recheck recovery. Alternatively, a cluster of missing or heavily bent tines on one side of the reel produces the same lateral stripe — inspect the tine condition across the full reel width and look for a zone of damaged tines corresponding to the uncollected stripe position.

How often should I inspect and replace spring tines?+

For operations below 2,000 bales per season in standard hay and straw, inspect spring tines at the pre-season service and replace any individual tines that meet the replacement criteria. A full tine set replacement is typically needed every 3–5 seasons at this volume. For operations above 4,000–5,000 bales per season, annual full-set replacement at the pre-season service is the more cost-effective approach — replacing individual failed tines mid-season is more expensive in labour and downtime than replacing the full set annually at a planned service. In hard-stalk crops (cotton, sorghum) where abrasive debris is collected alongside crop material, inspect tine condition every 500–800 bales during the season as wear accelerates significantly in these conditions.

My pickup is collecting well in the morning but leaving more hay on the ground by afternoon. Why?+

An afternoon increase in uncollected crop from the same field and settings is almost always moisture-related, not machine-related. As hay dries through the afternoon, it becomes more brittle — fine leaves and stems shatter at tine contact rather than bending and being lifted. This shattering looks like poor pickup performance but is actually leaf loss from mechanical brittleness. The correct response is not to lower the pickup or change the tine setting — it is to accept that some leaf loss in the afternoon is inherent to dry-weather baling and to time the session to end before the crop reaches extreme dryness. For alfalfa where leaf loss is economically significant, avoiding baling after 16:00 on very hot, dry days reduces this afternoon leaf loss without any machine adjustment. If the afternoon crop is genuinely dry enough to shatter at tine contact, it is also at its minimum moisture content and optimal for baling — the bale quality benefit is worth the minor leaf loss.

Can I straighten a bent spring tine rather than replacing it?+

Straightening a bent spring tine is possible once as a temporary field repair, but not recommended as a permanent fix. Spring tines are made from hardened spring steel — bending and then straightening the metal stresses it at the bend point and reduces the fatigue life at that location. A straightened tine is more likely to fail at the same point as the original bend under further operating load. In a field breakdown where you have no replacement tines available, straighten the bent tine to complete the session, but replace it at the first opportunity. If a spring tine has been straightened once and bends again at the same location, replace it immediately — a second bend at the same point indicates the metal has reached its fatigue limit at that stress concentration.

Is the hammer-claw pickup on the 9YF-2200S better than spring tines for hay baling?+

For standard hay and straw baling, both systems recover crop at similar rates — the spring-tooth pickup on the 9YF-1700 through 9YF-2200 is very well-suited for alfalfa, grass hay and cereal straw in normal windrow conditions. The hammer-claw system on the 9YF-2200S provides advantages in specific situations: collecting crop from mat-lying or lodged positions where spring tines bounce over the material surface; hard-stalk crops (cotton, sorghum, sunflower) where spring tines deflect off rigid stems rather than lifting them; and high-ash or abrasive crop conditions where spring tine wear accelerates rapidly. If your primary crop is standard alfalfa or grass hay in elevated windrows, the spring-tooth models are entirely adequate and offer a lower machine cost. If you regularly work in lodged crops, hard-stalk residues or fields with significant debris, the hammer-claw system offers a meaningful recovery and durability advantage.

My baler pickup makes a clicking noise on every revolution. Should I be concerned?+

A regular click on each reel revolution — once per full rotation — typically indicates one of four things. First: a bent or loose tine that contacts a guard or frame component at one specific angular position. Second: a loose or broken cam follower that produces a mechanical click when the follower encounters a worn section of cam surface. Third: a cracked drive sprocket tooth that causes a brief load spike as it passes the drive chain. Fourth: a loose pickup guard or stone deflector that vibrates and contacts the reel tube at a specific rotational position. Stop the machine, disengage the PTO and wait for complete rest before investigating. Rotate the reel slowly by hand through one full revolution while listening and feeling for the click point — localise the source before attempting any repair. A click that becomes progressively louder or changes to a grinding sound indicates bearing wear and should be addressed before the next baling session.

How do I set the correct pickup height when moving between different field types?+

Moving between field types — from a firm, dry surface to an irrigated, soft field, or from a level paddock to a field with wheel ruts — requires a height adjustment check. On soft soils, the gauge wheels sink into the surface and reduce the effective tine clearance below the setting established on firm ground. If the gauge wheel sinks 15mm into soft soil compared to firm soil, the effective tine clearance decreases by 15mm — potentially moving from the correct 40mm clearance to 25mm where tines contact the ground. Carry the gauge wheel adjustment spanner on the machine and adjust after the first 30–50 metres in any new field type. Use soil penetration resistance as a guide: if your boot heel sinks more than 20mm into the field surface under normal walking pressure, the soil is soft enough to require a pickup height increase of 10–15mm compared to your firm-ground setting.

Why does my pickup leave more hay on the ground on the first pass of a windrow than on subsequent passes?+

Higher material left on the first pass of a windrow — particularly at the row start near the field headland — is usually a speed-related behaviour. Operators typically approach the windrow end at reduced speed after the headland turn and then accelerate into the main field. At the lower entry speed, the forward-to-tine-speed ratio may shift into the range where tines push material slightly rather than lifting it cleanly. The fix is to reach operating speed before the pickup enters the windrow — accelerate during the headland approach so the machine enters the crop at the intended working speed. The first 5–10 metres of each windrow pickup quality will improve significantly when entry speed matches operating speed at the start of the row.

Choose the Right Pickup Configuration for Your Crop

From the spring-tooth 9YF-1700 for standard hay to the hammer-claw 9YF-2200S for hard-stalk and lodged crops — tell us your primary crop and field conditions and we will confirm the correct pickup type for maximum recovery.