Products Description
Connect：
|
Product name |
Rotary Switch |
|
Part number |
319-4420 |
|
Excavator model |
E365C E325D E313D |
|
Lead time |
1-3 days after payment |
|
Packing |
neutral/original |
|
MOQ |
1 PC |
|
Quality |
high quality |
|
Warranty |
3-6 months |
|
Shipping |
DHL, UPS, FedEx, Air, Sea, DDP |
|
Payment |
TT/Alibaba Trade Assurance/Credit card/Western Union/Alipay/Wechat |
DETAILED PHOTOS
0.5° position control precision
Gold-plated contacts + 50,000 switching cycles
UL94 V-0 flame-retardant material
1:1 Cat OEM interface
Niche Installation & Maintenance Tips
- Align the switch pin with the handle interface (do not force insertion to avoid pin bending).
- Tighten the fixing nut to 1.5-2 N·m (over-tightening will damage the internal contact structure).
| Symptom | Root Cause | Solution |
| Equipment action delay | Oxidized contacts (poor signal) | Replace with 319-4420 switch (gold-plated contacts resist oxidation) |
| No response to handle operation | Loose wiring harness | Re-plug the connector and lock the buckle |
| Signal jitter | Switch internal wear (exceeded 50,000 cycles) | Replace with new 319-4420 switch |
-
Avoid violent operation of the handle (reduces switch mechanical impact).
-
Clean the switch surface with a dry cloth every 300 working hours (prevents dust from entering the contact area).
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