I'm not too sure about what he is saying, but it might work.
I have a 99 ranger with the PVH hubs. Mine don't lock by vacum anymore. I disconnected the vacum switch, where the line comes from the engine into the switch then goes out to the wheels.
I now lock the hubs by pulling them off and pushing in the plastic internals until I hear them click. Then put them back on. I unlock them the same way.
The best part is, that you don't even have to remove the wheels. All you remove are the center caps from the front wheels.
Works like a charm. I've been doing this for about a year and a half now, and no problems. Plus you don't get the added drag from the front drivetrain always turning.
1999 FORD RANGER XLT 4X4 SUPERCAB 3.0L FFV
SUPERLIFT REAR ADD-A-LEAF; AMERICAN RACING WHEELS; BFG ALL-TERRIAN 31X10.5R15
WESTIN SAFARI BAR; HELLA 500 DRIVING LIGHTS; 99 2WD GRILL WITH A STULL BILLET GRILL
2003 TAILIGHTS WITH CONVERTED HARNES TO ACCEPT 2 BULBS
TINTED WINDOWS 6% REAR, 32% FRONT 2 DOORS
UWS DIAMOND PLATE TOOL BOX, WESTIN BED EXTENDER, TRAIL FX BEDLINER
FULL STREREO WITH SUBS
VIPER 5000 2 WAY RESPONDER ALARM WITH BACKUP BATTERY, GLASS BREAK SENSOR, 2 SHOCK SENSORS, AND HOOD SENSOR