OPERATING INSTRUCTIONS:
The Quigley Ford 4x4 system utilizes the front-steer drive axle of the Ford F-Series model line. Our system uses a manual lockout hub or an optional automatic locking hub. For detailed operating instructions of the Quigley 4x4 system please download and print the following pdf file. Oper_Ford_Solid.pdf
If at anytime you do not understand any of the operating instructions please contact Quigley Motor Co., Inc. Our phone numbers are listed at the bottom of the instructions or email Quigley Motor Company.
CAUTION:
When transfer case is in “N” (neutral position), the transmission “PARK” feature is disabled. 
Parking brake must be applied or vehicle may move unexpectedly causing serious injury or death.
To prepare your vehicle for 4x4 operation you must first lock your manual hubs. Simply turning your front wheel hub selector knobs clockwise to their “LOCK” position does this. Slight movement of the vehicle in either direction will complete the lock. Both hub lock selector knobs must be set in the same function to avoid excessive front differential wear and undesirable vehicle handling characteristics.
For best fuel economy, less tire wear and quietest operation, the manual hub locks should be in their “FREE” position. Also when finished with 4x4 application we suggest you disengage both of your manual hub locks by turning them counterclockwise to their “FREE” position and returning vehicle to 2H.
If you have automatic hub locks then you either have a “LOCK” position or an “AUTO” position. For detailed operating instructions on this type of hub system please download and print The Ford Solid Axle file.
ENGAGING 4x4 SYSTEM WHILE VEHICLE IS IN MOTION
4WD High Range: Shift the transfer case to 4H only when conditions require traction. Vehicle’s transfer case can be shifted between 2H and 4H while in motion at speeds up to 55 mph, provided both of your manual or automatic hub locks are in their “LOCK” position. For automatic hub locks in their “AUTO” position vehicle must be stopped before shifting into 4H. For automatic hub vehicles only shift the transfer case lever to the 4H position while vehicle is at rest. The hub locks will automatically engage when the vehicle is driven.
CAUTION 4WD Low Range:
For both shifting into and out of 4L the vehicle must be stopped and the TRANSMISSION must be in N (Neutral) whether you have manual hubs or automatic hubs. Never shift into or out of 4L while vehicle is in motion. Please download and review detailed operating instructions before engage 4WD Low range.