4x4 not working

[fordlover]

97 ford 4x4...4x4 light quit comin on works rarely did work jus fine this winter now won't loc in took all wire connections apaart on transfer cleaned and wd40 them didnt help any ideas??

 

[dustybumpers]

shift on the fly, or gear shift?

 

[blacksnapon]

could be as simple as a blown fuse.

 

[fordlover]

please help!!!!!

shifter on the floor..not a blown fuse..cause sometimes it locks in most of the time not..at first i could wiggle shifter sideways or go into low loc and then it wood go in but not all the time worked fine a couple months ago in winter havent used it much since then wen it does loc in u can here somthing clickin in the glove box area??..gotta be something easy...auto hubs..if i put manual lockin hubs on it and pull shifter into 4x4 wood'nt lock in all the time?

 

[blacksnapon]

Section 308-07A: Transfer Case — General Information 1997 F-150/250 Workshop Manual

DESCRIPTION AND OPERATION

--------------------------------------------------------------------------------

Transfer Case — Mechanical Shift on the Fly (MSOF)Operation
The mechanical shift on the fly (MSOF) system is a manual shift 4WD system that allows the operator to choose between two different 4x4 modes as well as 2-wheel drive. The operator can switch between 2WD and 4WD HIGH mode at speeds up to 88 km/h (55 mph). To engage or disengage 4WD LOW range, the vehicle speed must be less than 5 km/h (3 mph), the brake pedal depressed, and the transmission must be in NEUTRAL.

Shifts between 2WD HIGH and 4WD HIGH can be made at a stop or any forward speed up to 88 km/h (55 mph). At temperatures below 0°C (32°F) shifts should not be performed above 72 km/h (45 mph).

The transfer case is equipped with an electromagnetic clutch which is located inside the case. This clutch is used to spin up the front driveline when shifting from 2WD to 4WD mode at speed. When the manual shift lever is moved this activates the 4WD indicator switch, 4WD electric clutch relay, and the electromagnetic clutch. When the transfer case front and rear output shafts are synchronized, the spring loaded lockup collar mechanically engages the mainshaft hub to the drive sprocket. Finally, the front axle collar is engaged and the electromagnetic clutch is deactivated.


--------------------------------------------------------------------------------

 

[Beach66Bum]

Section 308-07A: Transfer Case — General Information 1997 F-150/250 Workshop Manual

DESCRIPTION AND OPERATION

--------------------------------------------------------------------------------

Transfer Case — Mechanical Shift on the Fly (MSOF)Operation
The mechanical shift on the fly (MSOF) system is a manual shift 4WD system that allows the operator to choose between two different 4x4 modes as well as 2-wheel drive. The operator can switch between 2WD and 4WD HIGH mode at speeds up to 88 km/h (55 mph). To engage or disengage 4WD LOW range, the vehicle speed must be less than 5 km/h (3 mph), the brake pedal depressed, and the transmission must be in NEUTRAL.

Shifts between 2WD HIGH and 4WD HIGH can be made at a stop or any forward speed up to 88 km/h (55 mph). At temperatures below 0°C (32°F) shifts should not be performed above 72 km/h (45 mph).

The transfer case is equipped with an electromagnetic clutch which is located inside the case. This clutch is used to spin up the front driveline when shifting from 2WD to 4WD mode at speed. When the manual shift lever is moved this activates the 4WD indicator switch, 4WD electric clutch relay, and the electromagnetic clutch. When the transfer case front and rear output shafts are synchronized, the spring loaded lockup collar mechanically engages the mainshaft hub to the drive sprocket. Finally, the front axle collar is engaged and the electromagnetic clutch is deactivated.


--------------------------------------------------------------------------------

Thanks for posting this reply Vince

 

[DNFXDLI]

Yes, thanks Vince...your information is very much appreciated.