POTENTIOMETER FEELER BOARD RJ-13S Toyota JAT-600 JAT-610 JAT-710 JAT-810 Loom Spare Part HL1024

Product Overview

This is the trimmer potentiometer used on the weft feeler board of Toyota JAT-600, JAT-610, JAT-710 and JAT-810 air jet looms. Original part number RJ-13S, our item code HL1024. It is the small variable resistor on the board that sets the detection level for the weft feeler, the one the technician turns when the sensitivity has to be brought into range.

It is a cheap part that causes expensive behaviour. The carbon track inside a trimmer wears where the wiper sits, and the wiper itself oxidises. The result is a setting that is not stable: the level reads correctly on the bench, drifts half a turn after a week of vibration, or jumps when the box is tapped. The loom then stops on good picks, the technician turns the pot again, and the same fault returns. In many cases the whole board is replaced when the only worn part is this potentiometer.

Replacing it is a bench job with a soldering iron, not a loom-side job. If your workshop already repairs boards, this is the part to keep in the drawer: it turns a board swap into a repair and keeps the original board in service with its known-good history.

Please note this item is the potentiometer only. It is not the complete feeler board, and it is supplied without the knob or the mounting hardware unless ordered separately.

Applications & Compatibility

Widely used in weaving mills, loom repair workshops and electronics repair benches for Toyota air jet loom feeler board repair.

• Compatible with: Toyota JAT-600 air jet loom feeler board
• Compatible with: Toyota JAT-610 air jet loom feeler board
• Compatible with: Toyota JAT-710 air jet loom feeler board
• Compatible with: Toyota JAT-810 air jet loom feeler board
• Original part number: RJ-13S
• Our item code: HL1024
• Function: detection level adjustment on the feeler board

Please confirm your board version and, if possible, send a photo of the potentiometer on the board before ordering, so the shaft type and mounting match.

Quality Standard

• Resistance value checked against the OEM reference before packing.
• Full sweep tested on every piece: no dead spots, no jump in reading across the track.
• Wiper and track inspected for oxidation and loose play, since play is what makes the setting drift under vibration.
• Terminal legs checked for straightness and solderability so the part seats flat on the board.
• Shaft and mounting checked against the board pattern for correct fit without modification.
• Packed in anti-static bag with the item code marked, as the part is a board-level electronic component.
• Video outgoing inspection can be provided on request before shipment.
• Warranty covers manufacturing defects (case-by-case evaluation). Damage from soldering heat or wrong installation is excluded.

Specifications

Order & Shipping Information

• Minimum order quantity: starting from 2 pieces.
• Sample order is acceptable for quality evaluation.
• Stock items ship within 5 working days after payment confirmation.
• Neutral export packaging by default; anti-static bag with the item code marked.
• Shipping option: DHL / FedEx / UPS express, air freight, sea freight.
• Complete export documents including commercial invoice and packing list will be supplied.
• We ship worldwide to textile markets across Southeast Asia, Central Asia, South America, North America and Europe.

Frequently Asked Questions

Q1: Is this the complete feeler board?
No. This is the trimmer potentiometer fitted on the board, original part number RJ-13S. The complete boards are listed separately.

Q2: How do I know the potentiometer is the faulty part?
If the detection level will not stay where it is set, drifts after a few days of running, or jumps when the control box is tapped, the trimmer is a likely cause. A full sweep with a meter will show dead spots or jumps.

Q3: Can it be replaced in the workshop?
Yes. It is a board-level part and needs desoldering and soldering on the bench. It is not a loom-side swap.

Q4: Does it come with the knob or mounting nut?
No, the potentiometer is supplied on its own. Please ask if you also need the knob or hardware.

Q5: Can I order samples first?
Yes, sample orders are supported for quality checking before bulk purchase.

Q6: What about the warranty?
Warranty is offered against manufacturing defects, evaluated case by case. Damage from soldering heat or wrong installation is not covered.