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HOWO371 HOWO380 Cab hydraulic lock assembly WG1642220101
Safety Locking and Operational Logic
1. Driving Lock: When the vehicle is in normal operation and the cab is lowered, the mechanical locking hook within the hydraulic lock engages-driven by the combined action of a spring and system oil pressure-to firmly grip the locking ring (or pin) fixed to the chassis. This prevents instability or loss of rigid support caused by minor leakage in the hydraulic circuit.
2. Automatic Unlock: When the driver operates the tilting pump to raise the cab, hydraulic fluid first enters the control chamber at the top of the hydraulic lock. The oil pressure drives an internal piston against the spring force, automatically disengaging the locking hook. Only then does the hydraulic fluid proceed to the main tilting cylinder to lift the cab.
DETAILS
| DESCRIPTION | Cab hydraulic lock assembly | PART NUMBER | WG1642220101 |
| WEIGHT | 3 kg | VOLUME | 20 × 13.5 × 13.5 |
| TRUCK MOLDE | SHACMAN | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | CABIN |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Periodic Disassembly, Assembly, and Routine Maintenance
1. Clean air vents/seals: The hydraulic lock is located beneath the rear of the cab, where mud and debris easily accumulate. Small stones lodged in the gap of the locking hook can prevent it from closing properly.
2. Do not force open without adequate hydraulic pressure: If the tilting system lacks hydraulic pressure or air, never attempt to force the locking hook open with a pry bar; doing so can cause permanent mechanical damage to the lock core and piston.
Fault Symptoms and Safety Warnings
1. Failure to unlock (jammed): When the tilt pump is operated to lift the cab, the hydraulic lock fails to disengage automatically, preventing the cab from tilting upward.
2. Insecure locking (cab swaying during driving): After the cab is lowered, the dashboard displays a "Cab Unlocked" warning, or the rear of the cab is felt to bounce or make abnormal noises while driving.
3. Hydraulic fluid leakage: Visible oil residue appears at the hydraulic lock's hose fittings or the lock body seal, leading to insufficient pressure in the tilting system.
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