POTENTIOMETER FEELER BOARD RJ-13S YHE-0172 Toyota Air Jet Loom Weft Timing Part

Product Overview

Feeler board with timing potentiometer, marked RJ-13S, for Toyota JAT-600, JAT-610, JAT-710 and JAT-810 air jet looms. Item code YHE-0172.

This board carries the trimmer that sets how early or late the feeler reacts to the pick. The trimmer is the part that ages: the track wears where the wiper has sat for years, so the setting people have always used stops holding. On the loom that shows up as a feeler that answers late, stops that cluster on the same pick position, a setting that seems right at one speed and wrong at another, or a value that drifts back within a shift of being adjusted. A worn track cannot be tuned out — turning the trimmer only moves the wiper onto fresh resistance, and the problem returns days later.

Applications & Compatibility

Supplied to weaving mills and loom electrical teams servicing weft feeler timing on Toyota air jet looms.

• Compatible with: Toyota JAT-600 air jet loom
• Compatible with: Toyota JAT-610 air jet loom
• Compatible with: Toyota JAT-710 air jet loom
• Compatible with: Toyota JAT-810 air jet loom
• Board marking: RJ-13S
• Our item code: YHE-0172
• Different marking, different board: RJ-13PR (our HL1026)

Two markings circulate in the field for this family, RJ-13PR and RJ-13S, and they are not interchangeable even though both sit in the same position. Read the marking printed on the board before ordering; if it is obscured by conformal coating or lint, send a photo of the board face and the connector side and we will identify it. Fitting the wrong suffix leaves the feeler responding at the wrong point in the pick, which looks like a mechanical timing fault and sends fitters after the wrong problem.

Quality Standard

• Trimmer is a sealed type, so the wiper track does not load up with lint and size mist.
• Setting range verified across the full trimmer travel, not only at mid-position.
• Setting holds after adjustment under vibration, tested on a running bench.
• Board outline and connector positions matched to the original for drop-in fit.
• Conformal coating against fine dust in a working shed cabinet.
• Anti-static bag with foam, packed so the trimmer cannot be knocked in transit.
• Warranty covers manufacturing defects (case-by-case evaluation). Damage from incorrect wiring or forced trimmer travel is excluded.

Specifications

Order & Shipping Information

• Minimum order quantity: starting from 2 pieces.
• Sample order is acceptable for evaluation on the loom.
• Stock items ship within 5 working days after payment confirmation.
• Neutral export packaging by default; private-label and custom packaging service available.
• 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: How do I tell RJ-13S from RJ-13PR?
Read the marking printed on the board. Both fit the same position but are not interchangeable. If the print is unclear, send a photo of the board face and connector side.

Q2: I adjust the trimmer and the fault returns in a few days. Why?
The wiper track is worn where it has sat for years. Adjustment only moves it onto fresh resistance. Replace the board rather than keep chasing the setting.

Q3: The feeler responds late at high speed but fine at low speed. Is that the trimmer?
It can be. A setting that only suits one speed is typical of a worn track or a drifting value. Confirm the board marking and replace if the setting will not hold.

Q4: Can I run this board with the RJ-13PR version mixed in the same shed?
The two are not interchangeable per machine. Keep each loom on the version it was built with, or confirm with us before substituting.

Q5: What about the warranty?
Warranty is offered against manufacturing defects, evaluated case by case. Damage from incorrect wiring or forced trimmer travel is not covered.