Hitachi Zaxis 33U-5A Operator's Manual page 330

10. Remove bolts (6) (not covered with resin caps) in the rear
section of the operator's seat.
d
CAUTION:
 If bolts other than bolt (6) are removed, the canopy
or the cab (optional) may come off the floor,
resulting in unexpected accident.
 Care should be taken that if the floor is tilted upward
while raising the front attachment, the canopy or cab
(optional) may come in contact with the boom.
Wrench size:  13 mm
 17 mm
 19 mm
6
Cab (4 positions)
OPTIONAL ATTACHMENT
CAB TILTING MECHANISM
ZX65USB-5A
MADC-13-002
ZX33U-5A, 38U-5A, 48U-5A, 55U-5A
6 Canopy (3 positions at the front)
Canopy (2 positions at the rear)
13-28
6
Cab (3 positions)
6
MADB-13-020
MADB-13-022
MADB-13-023