Clutch Master Cylinder ME636075 ME-636075 For Mitsubishi Fuso FK617 Fighter 220P 10.5T & FK/FM/FN Series — OEM 3/4″ Cast Iron Hydraulic Clutch Actuator

The Clutch Master Cylinder with OEM number ME636075 (also listed as ME-636075) is a verified OEM-grade direct replacement for a wide range of Mitsubishi Fuso medium-duty trucks, including the FK617 Fighter series. Manufactured to Mitsubishi's stringent OEM specifications, this cylinder converts mechanical force from the clutch pedal into hydraulic pressure to enable smooth gear engagement and disengagement.

If your clutch master cylinder is failing, you may experience one or more of the following symptoms:

• Soft or Spongy Clutch Pedal: Pedal feels unusually soft, spongy, or goes to the floor without resistance
• Difficulty Shifting Gears: Hard to engage or disengage gears, accompanied by grinding noises
• Clutch Pedal Heavy or Stiff: Pedal requires excessive force to depress
• Clutch Drag / Incomplete Disengagement: Vehicle creeps forward with clutch fully depressed
• Visible Fluid Leakage: Brake/clutch fluid seeping from the master cylinder area

Pre-Installation Checklist:

• Bench bleed the new master cylinder before installation to remove air
• Always use fresh DOT 3 or DOT 4 brake fluid from a sealed container
• Inspect the clutch hydraulic line for damage or corrosion — replace if necessary
• CRITICAL: Verify your vehicle's chassis code before ordering

Installation Guidelines (Reference Mitsubishi workshop manual):

1. Disconnect the negative battery terminal
2. Siphon old clutch fluid from the reservoir
3. Disconnect the hydraulic line from the master cylinder outlet
4. Remove the master cylinder mounting nuts/bolts from the firewall
5. Disconnect the clevis pin from the clutch pedal
6. Remove the old master cylinder assembly
7. Clean the mounting surface thoroughly
8. CRITICAL: Bench bleed the new master cylinder before installation
9. Install the new master cylinder and torque mounting nuts to manufacturer's specifications
10. Reconnect the clevis pin to the clutch pedal and secure with cotter pin
11. Reconnect the hydraulic line and torque to specification
12. CRITICAL: Bleed the clutch hydraulic system thoroughly to remove all air
13. Refill with fresh DOT 3 or DOT 4 brake fluid to the reservoir MAX line
14. Test clutch pedal feel and engagement before road test

Maintenance Schedule:

• Inspection: Every 50,000 km / 12 months
• Fluid Replacement: Every 2 years or 40,000 km
• Replacement: Immediately if failure symptoms appear

Each clutch master cylinder is securely packed in protective packaging to prevent shipping damage. Suitable for wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners.