T: +8615609213525
E: 15829336298@139.com
E: 15829336298@139.com
Room 1212-G107, Unit 2, Building 1, Block A, Shenglong Plaza, No. 80 Weiyang Road, Weiyang District, Xi'an City, Shaanxi Province
| Quantity: | |
|---|---|
12JS160T-1703022
Sinotruk HOWO
| Attribute | Description |
|---|---|
| Part Name | H Valve / Air Control Valve / Pneumatic Directional Valve / High-Low Range Shift Valve |
| OE Number (Original Equipment) | 12JS160T-1703022 (with variants: -1, -2, -3, etc.) |
| Voltage | 24V DC – Compatible with standard heavy-duty vehicle electrical systems |
| Operating Voltage Range | Typically 20–28V DC (suitable for commercial vehicle battery systems) |
| Working Pressure | 0.6 MPa to 0.8 MPa (approx. 87–116 psi), compatible with standard pneumatic brake/shift systems |
| Valve Type | Solenoid-operated pneumatic directional control valve (typically 2-position 5-port or similar configuration) |
| Function | Controls airflow between high-range and low-range actuators in the transmission, enabling automatic high/low range gear selection during shifting |
| Body Material | High-strength aluminum alloy (lightweight and corrosion-resistant) |
| Internal Components | Wear-resistant seals (NBR or FKM rubber), precision-machined metal spools |
| Sealing Performance | Leak-tight design; meets automotive pneumatic system standards |
| Electrical Connection | Standard automotive plug-in connector (ISO 4165 or equivalent), waterproof rating typically IP65 or higher |
| Control Method | Electronically triggered by transmission control unit (TCU) or manual shift selector |
Name1
Name2
✅ Professional Installation Required:
Must be installed by certified technicians familiar with pneumatic transmission systems.
Involves both air line routing and electrical wiring – improper installation may lead to shifting failure or damage.
Ensure Clean Air Supply:
Moisture, oil, and particulates in the air system can cause internal valve spool sticking or seal degradation.
Regularly drain moisture from air tanks (daily or weekly depending on usage).
Install/maintain air dryer systems and inline filters upstream of the valve.
Check Electrical Connections:
Inspect harness for abrasion, corrosion, or loose terminals.
Ensure secure mating of connectors; avoid "half-plugged" conditions.
Use dielectric grease to prevent oxidation in humid environments.
️ Troubleshooting Common Issues:
| Symptom | Possible Cause | Recommended Action |
|---|---|---|
| Difficulty shifting between high/low range | Clogged air passage or stuck spool | Clean or replace valve; inspect air lines |
| No response from shift lever | Electrical fault (blown fuse, broken wire) | Test continuity, check TCU signal output |
| Air leakage at valve body | Damaged seals or cracked housing | Replace immediately to avoid pressure loss |
| Intermittent operation | Loose connector or moisture ingress | Reconnect securely; test in dry conditio |
| Attribute | Description |
|---|---|
| Part Name | H Valve / Air Control Valve / Pneumatic Directional Valve / High-Low Range Shift Valve |
| OE Number (Original Equipment) | 12JS160T-1703022 (with variants: -1, -2, -3, etc.) |
| Voltage | 24V DC – Compatible with standard heavy-duty vehicle electrical systems |
| Operating Voltage Range | Typically 20–28V DC (suitable for commercial vehicle battery systems) |
| Working Pressure | 0.6 MPa to 0.8 MPa (approx. 87–116 psi), compatible with standard pneumatic brake/shift systems |
| Valve Type | Solenoid-operated pneumatic directional control valve (typically 2-position 5-port or similar configuration) |
| Function | Controls airflow between high-range and low-range actuators in the transmission, enabling automatic high/low range gear selection during shifting |
| Body Material | High-strength aluminum alloy (lightweight and corrosion-resistant) |
| Internal Components | Wear-resistant seals (NBR or FKM rubber), precision-machined metal spools |
| Sealing Performance | Leak-tight design; meets automotive pneumatic system standards |
| Electrical Connection | Standard automotive plug-in connector (ISO 4165 or equivalent), waterproof rating typically IP65 or higher |
| Control Method | Electronically triggered by transmission control unit (TCU) or manual shift selector |
Name1
Name2
✅ Professional Installation Required:
Must be installed by certified technicians familiar with pneumatic transmission systems.
Involves both air line routing and electrical wiring – improper installation may lead to shifting failure or damage.
Ensure Clean Air Supply:
Moisture, oil, and particulates in the air system can cause internal valve spool sticking or seal degradation.
Regularly drain moisture from air tanks (daily or weekly depending on usage).
Install/maintain air dryer systems and inline filters upstream of the valve.
Check Electrical Connections:
Inspect harness for abrasion, corrosion, or loose terminals.
Ensure secure mating of connectors; avoid "half-plugged" conditions.
Use dielectric grease to prevent oxidation in humid environments.
️ Troubleshooting Common Issues:
| Symptom | Possible Cause | Recommended Action |
|---|---|---|
| Difficulty shifting between high/low range | Clogged air passage or stuck spool | Clean or replace valve; inspect air lines |
| No response from shift lever | Electrical fault (blown fuse, broken wire) | Test continuity, check TCU signal output |
| Air leakage at valve body | Damaged seals or cracked housing | Replace immediately to avoid pressure loss |
| Intermittent operation | Loose connector or moisture ingress | Reconnect securely; test in dry conditio |
