Kyotechs' documented product extract records throttle motors for two machine brands, including one listing that specifies its configuration in the title — cables and pin count — because those details are exactly what separates a correct motor from a look-alike. A throttle motor is an electrical part with a mechanical job: check the linkage and cable condition before condemning the motor, and check the controller's output before condemning either.
Documented listingsDocumented Throttle Motor Listings
| Part number | Part | Compatible with | Machine models |
|---|---|---|---|
| 139-3917 / 1393917 | Throttle motor with 2 cables, 6 pins | Caterpillar | 312B, E311B, 320B |
| 14529290 | Throttle motor | Volvo | EC140, EC210, EC290 |
Symptoms and Checks
- Engine speed hunting or wrong idle — check cable adjustment and linkage wear first; a stretched cable mimics a failing motor.
- No response to the throttle dial — confirm the motor receives its signal; a dead signal is a controller or harness fault.
- Motor hot or noisy — internal wear; replacement by part number, noting cable count and connector pins from the old unit.
- Shutdown problems — on engines with shut-off solenoids, separate the throttle motor from the shut-off solenoid before ordering either.
Delivery and preparation times are confirmed for your order in the enquiry reply, in writing and before payment: the reply states the times, the packing and the shipping method that apply to your exact part number. Times are confirmed per order rather than published as a general figure, because they follow the listing, the quantity and the destination.
Frequently Asked Questions
Why do cable count and pins matter?
The documented Caterpillar listing is a 2-cable, 6-pin unit. Machines that look identical can use different cable arrangements and connectors; the old unit's configuration is part of the match, so photograph it if the number is unreadable.
Can a throttle motor be repaired?
Motors are supplied as replacement units in this programme. The diagnosis steps above are worth running first, because a share of throttle faults live in the cable, linkage or controller output.
Do the parts carry a warranty?
Warranty terms are confirmed in writing for each order before payment. Kyotechs' own FAQ states that most parts are backed by a warranty against manufacturing defects; ask for the term that applies to your listing when you enquire.
Setting Up After Fitting
A throttle motor is not always a bolt-on-and-done part. Cable tension and linkage travel decide whether the motor's range maps onto the engine's governor range, and a motor fitted against a slack or binding cable will hunt, stall at idle or fail to reach full speed — symptoms easily mistaken for a faulty new motor. After fitting, the checks are mechanical: full travel both ways without binding, correct idle and maximum speeds, and a clean shutdown. If the machine's controller performs a throttle learning procedure for your model, run it. These steps are why the enquiry asks about the cable's condition as well as the motor's number — the two are one system.
Calibration memory matters too: on electronically governed machines the controller may store the old motor's behaviour, and a new motor can inherit odd idle or shutdown symptoms until the stored values are relearned or reset through the machine's own procedure. If the engine hunts only at idle after an otherwise clean installation, check for a learning procedure before condemning the part — the engine repair service's diagnostic platforms cover exactly this class of problem on the engines they support.