9.2　Tilting Device

9.2.1　The base shall be installed according to the following requirements:

1　The longitudinal and horizontal center lines shall be adjusted，and the measurement by plumb wire should be carried out，with the allowable deviation of 2.0mm.

2　The elevation shall be adjusted，and the measurement by optical instrument should be carried out，with the allowable deviation of±2.0mm.

3　The levelness shall be adjusted，and the measurement by leveler should be carried out，with the allowable deviation of 0.20/1000.

9.2.2　The tilting hydraulic cylinder shall be connected with the base and the cardinal axis of cradle in accordance with the requirement of the design technical document.