AT424407 Quick Tach Actuator for John Deere Skid Steer Loaders
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- John Deere skid steers: 318D, 318E, 320D, 320E, 320G, 323E, 324E, 324G, 325G, 326E, 328E, 330G, 331G, 332, 332E, 332G
- John Deere compact track loaders: 319D, 323D, 329D, 329E, 333E, 333G
- John Deere compact wheel loaders: 204K, 204L, 244J, 244K, 244K-II, 244L, 304J, 304K, 304L, 324J, 324K, 324L
Product Overview
When the attachment plate will not release, only moves in one direction, or needs manual help, the electric linear actuator and its connections become key test points. This replacement drives the latch linkage on a broad group of John Deere skid steers, compact track loaders, and compact wheel loaders.
A bent linkage, seized pins, low voltage, damaged switch, or packed debris can overload a good actuator. Check movement by hand and match the connector, stroke, pin size, and machine serial number.
This is an aftermarket replacement part and is not manufactured or supplied by the original equipment brand.
Key Features & Performance
- Electric linear actuator for powered quick tach
- Cross-references five common John Deere numbers
- Fits skid steer, compact track, and compact wheel loader families
- Restores powered coupler latch movement
Replaces Part Numbers
- AT424407
- AT494284
- AT361276
- AT471581
- AT318535
- SS440
- AT407234, when cross-referenced by serial number
Common Uses
- Repairing a coupler that will not lock an attachment
- Replacing an actuator with burned motor or stripped drive
- Restoring powered attachment changes
- Correcting one-way or intermittent latch movement after electrical diagnosis
Technical Specifications
- Product Type: Quick-tach linear actuator
- System: Powered attachment coupler
- Application: Select John Deere loaders
- Replacement Type: Aftermarket
Installation & Fitment
- Lower the attachment and relieve hydraulic pressure
- Clean and free the latch linkage before fitting the actuator
- Confirm pin size, stroke, connector, and wire polarity
- Lubricate pivots only as specified
- Cycle without an attachment, then verify both latches fully engage
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown. Model names alone may not guarantee fitment. Compare the original component, reference number, connector or mounting design, dimensions, and any serial-number or production-date break before purchase.
Frequently Asked Questions
Q: Can a seized latch damage the actuator? A: Yes. Debris, bent parts, or dry pivots can overload the motor and gears.
Q: Does it fit every machine in the list? A: Serial-number breaks and coupler options can change the actuator; match the original reference and dimensions.
Q: Why does it move in only one direction? A: The actuator, switch, wiring, polarity, or linkage can cause that symptom.
Part Summary
keywords: John Deere AT424407 actuator, AT494284 quick tach replacement, 318D coupler not locking, 333G attachment actuator, 244K quick attach motor, aftermarket Deere linear actuator
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.