. OPERATION DETAILED CONTROLS AND GAUGES OPERATION DETAILED CONTROLS AND GAUGES the operation in Step 5 to engage the lock. 3 - 28 5. the operator's cab, a ur right hand , grip top handle ( D), pull it up, and pu sh it again rear of the cab s ecurely to l ock the win 6. Chec k that lock l ever (B) is securely at t he LOCK p osition. Th e lock is en gaged if th e arrow on l ock case ( F) matches e position o he arrow o e arrow on l f the arrow n lock case ock lever ( on lock leve (F) does not B), the lock is