General Information 00 COE Cab Tilting, FLA/FLB: 00–11 A B C 06/15/93 f000131 A. Lowered (Operating) Position B. 45-Degree-Tilt Position C. Full-Tilt Position (80 Degrees) Fig. 3 leaking fitting) before trying to unlock the tilt cyl- inders. If such a problem is found, make any necessary repairs before unlocking the cylinder. WARNING Before tilting the cab, make sure that there is ad- equate clearance in front of the vehicle, and that the area is free of people and all objects. To unlock the cylinders, the cab must be moved in the opposite direction of travel (back toward the 45- degree position).
If the cab is moving toward the full- tilt position when the lock-up occurs, move the con- trol lever to "Lower," and work the pump a few strokes to unlock the cylinders. Move the control lever to "Raise," and allow the cab to descend to a full-tilt position. If the cab is moving toward the low- ered (operating) position when the lock-up occurs, move the control lever to "Raise," and work the pump a few strokes to unlock the cylinders. Move the control lever to "Lower," and allow the cab to de- scend to the operating position. Do not tilt the cab with the engine running. Tilting the cab could engage the transmission.
If the en- gine is running, the vehicle can move, causing an accident that could result in personal injury or property damage. 2. Secure all loose articles in the cab and bunk, and make sure the doors are securely latched. WARNING Tilting the FLB Cab Objects falling in the cab, or a door flying open, could damage the vehicle or cause personal in- jury. CAUTION 3. Move the pump control lever to "Raise." Before tilting the cab, make sure the vehicle is parked on level ground, both side-to-side and front-to-rear.
Tilting the cab while the vehicle is parked on unlevel ground (such as a sloping high- way shoulder) may damage the cab mounts and prevent you from returning the cab to the operat- ing position. 4. Operate the pump (using the manual pump handle, or the air control button if so equipped) to disengage the hold-down latches. IMPORTANT: Check the indicator pin on each cab latch. The latches have disengaged if the pins are out. See Fig. 4 . 1. Apply the parking brakes. Place the transmission shift lever in neutral. Shut down the engine if it is running. If air is present in the hydraulic tilt system, pump operation will seem "spongy" or ineffec- tive.
If this happens, bleed the air from the sys- tem; for instructions, see Group 60 of the Heavy-Duty Trucks Service Manual. If the cab stops moving while it is being raised, do not force it to move with the tilt pump. The Heavy-Duty Trucks Maintenance Manual, October 2009 00/20