The Quigley Ford 4x4 system for E-series Fords uses the front-steer drive axle of the Ford F-Series model line. Our system comes with manual locking hubs or optional automatic locking hubs.
CAUTION: When transfer case is in "N" (neutral), 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. Turn your front wheel hub selector knobs clockwise to their LOCK position. Slight movement of the vehicle in either forward or reverse directions will complete the lock. Both hub lock selector knobs must be set in the same position to avoid excessive front differential wear and undesirable vehicle handling characteristics. For automatic hub locks you have either a LOCK or AUTO position.
Engaging 4x4 System While Vehicle is in Motion
Shift the transfer case to 4H (four wheel drive high range) 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. If your automatic hub locks are in their AUTO position, your vehicle must be fully stopped before shifting into 4H. The hub locks will automatically engage when the vehicle is driven.
Caution About 4WD Low Range
For both shifting into and out of 4L, the vehicle must be stopped and the TRANSMISSION must be in N (Neutral) regardless of whether you have the 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 engaging 4WD low range.
Best Practices: No matter what type of Quigley Ford 4x4 system you have, shift into 4WD only when conditions require traction. When the need for a 4-wheel drive is no longer anticipated shift transfer case back into the 2H position. If vehicle is equipped with manual hub locks return them to their "FREE" position, by turning them counterclockwise, at a convenient time and location. For best fuel economy, less tire wear and quietest operation, the manual hub locks should be in their “FREE” position if so equipped and vehicle should be returned to 2H.