Fork not have serious distortion, weld sealing off phenomenon

1 door frame may not have distortion and weld sealing off phenomenon, both inside and outside the door frame roll gap adjustment should be reasonable and not more than 1.5mm, wheel rotation should be flexible, wheel and axle should be free of cracks, defects. Wheel groove wear amount not greater than 10% of the original size.

2 Two lifting chain tension should be  shop cranes‍  ‍uniform, not distorted, end coupled solid, chain pitch shall not exceed 4% of the original length, or should replace the chain. Sprocket rotation should be flexible.

3. Fork not have serious distortion, weld sealing off phenomenon. Fork surface may not have cracks, open seam welding phenomenon. Fork root angle not greater than 93 °, the thickness of not less than 90% of the original size. Left, right fork tip height difference must not exceed 3 percent fork pallet jack‍ horizontal section length. Fork positioning should be reliable, fork hook bearing surface, positioning surface may not have obvious defects, with the gap fork and fork frame should not be too large, and moves smoothly.

4. Lifting the fuel tank and connecting parts of the door frame should be solid, tilt cylinders and door frame, the frame is hinged to be reliable, flexible, with the gap is not too large. Cylinders should be sealed well, no cracks, smooth. At rated load, lOmin door frame from the sink is not more than 20mm, angle of no more than 0.5 °. Lifting speed at full load should not be less than half the standard value.‍