EXPLANATION OF COMPONENTS OPERATION 4. Pull lock pins (A) at the top left and right sides of the front window to the inside to release the lock. 5. From the inside of the operator's cab, hold the bottom grip with your left hand and the top grip with your right hand, pull up the window, and push it securely into catch (C). 6. Insert left and right lock pins (A) securely to lock it in posi- tion. 3-20