Shift the selector valve to the desired open or close position (figure 1). For the Manual Hydraulic Override assembly: 1. Remove the manual hand pump assembly by loosening the tubing connectors at the hydraulic cylinder and unbolting the hand pump mounting bracket. Plug the ends of the Basic Operation 4.9 EMERGENCY PUMP SHIFT PROCEDURES Before implementing manual override shift procedures, repeat the recommended shift procedures. If the shift fails, proceed as follows: 1. Bring the truck to a complete stop. 2. Apply the truck parking brake, and chock the wheels. 3. Shift the truck transmission to the NEUTRAL. 4. Pull Type Manual Override Option. Standard override option for pull type solenoid valves. This override is offered with or without the detent option. With detent option, pull and rotate 180 degrees, when released the override will remain in that position. To return to the normal operating position, rotate knob 180 degrees and release. City of Miami Fire Rescue Driver Engineer Review. This feature is not available right now. Please try again later. pump cooler right hosebed passenger miv override front miv override drivers miv manual override pump intake pump discharge this drawing is a close approximation of your fire apparatus. in all cases where the drawing and the written specification differ, the specification shall prevail. please work with your i need help bad the pump shift wont engage on the mack we have tried it with the electric and the manual override but it still wont engage either way. this all started after one of our know it all firefighters got in the truck and tried to engage the pump without puting it in N and i plainly told Employ manual override procedure at the shift cylinder on the pump gearbox as follows: An eyebolt is provided in the shift shaft to accept a drift punch or screwdriver. By inserting this tool into the hole provided, it will enable you to pull or push the shaft manually. pressure from a pump while multipl