. OPERATION DETAILED CONTROLS AND GAUGES OPERATION DETAILED CONTROLS AND GAUGES 3 - 22 4. hand to remove t he top o f the fro nt windo w from the f rame, t hen set it on the rai l of the top rolle 5. From the inside o f the op erator's c ab, h old the bottom gri p with the left ha nd and the top grip with right hand, pull up t he upper windshiel d, and push it in fully unt il it is locke d by catch (C). 6. Be sure t o push t he right and left pins ( A) in th e holes to apply the