Quick-couplerⅢ

Quick-coupler safety device

1. Safety pin
Fixed part of quick-coupler may be loose if there is problem with hydraulic line, cylinder or check valve, therefore metal pin, which prevents any movement of hitch located at the bottom part of body plate, is installed.
2. Check valve
Installing onto cylinder to prevent a dense Hydraulic occurrence which is an indication of problem with cylinder.
3. Rotary Switch & Button type
Safety prevention has been taken by connecting rechargeable battery and reply of the excavator of offer better working condition and automated rock system.

Caution information on operating Quick-coupler

- Do not recommend any operations exceeding the spec.
- Maintain the proper distance during the installation.
- Not allowed to uphold the equipment weight with a product.
- Prevents operation of non-approved attachment.
- Joining through reverse direction, angle has to be secure for fixed hook to enter

A break down and repair of Quick-coupler

Symptoms		Cause	Repair
Operating suspension of Quick-coupler	Sol. V/V Break down (No Voltage state)	Fuse short	Change
	No pressure into hydraulic hose	Wire short	Connection
		Solenoid Break down	Exchange
		Hose damage(oil leak)	Tighten & Change
	Operation suspension of cylinder	Solenoid operation error	Disjointing, Cleaning or Exchange
	Operation suspension of cylinder	Cylinder trouble	Cleaning or Change
	Hitch & incline plate Balance	Check valve trouble	Cleaning or Change
Backward of cylinder		Check valve trouble	Cleaning or Change
Oil leak	Oil hose	Hose damage	Change
Oil leak	Cylinder	O-ring damage in Block	Inquire at the office
Operation noise		Insufficiency of Grease	Grease injection