🔧 What is K5V212 Gear Pump?

The K5V212 gear pump is a pilot (auxiliary) hydraulic pump mounted on the main Kawasaki K5V212 hydraulic pump used in excavators.

It is different from the main piston pump — this one is a gear-type pump.

⚙️ Technical Description

• Model: K5V212
• Type: Hydraulic gear pump
• Function: Pilot / control oil supply
• Mounting: Attached to the main hydraulic pump

👉 The K5V212 system itself is a swash plate type axial piston pump, widely used in heavy excavators.

🧩 Function in the System

The gear pump provides low-pressure oil flow for:

• Pilot control system
• Joystick / valve control
• Servo piston activation

✔ Supplies pilot pressure
✔ Enables control of the main pump
✔ Ensures smooth machine operation

👉 Without this gear pump, the machine will not respond to controls properly.

🚜 Applications

Commonly used in excavators such as:

• CAT 345D / 349D
• Large 40–50 ton class machines

👉 Specifically designed as a pilot pump for excavator hydraulic systems.

⚠️ Failure Symptoms

When the K5V212 gear (pilot) pump fails:

• Joystick does not respond
• Machine does not move or reacts slowly
• Low pilot pressure
• Hydraulic system delay
• No swing / no travel response