4X4 test
Thread Starter
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Senior User
Joined: Feb 2002
Posts: 118
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From: USA
4X4 test
Hi
I just bought a 1995 EB 4X4 explorer and I would like to know how can I test the 4x4 system? I mean, do this, feel this, you should hear this and those kind of questions.
I would like to know if there's anything missing, broken or not functioning in the 4x4 system. How do i know when to change the fluids and all that.
Senior User
Joined: Jan 2002
Posts: 368
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From: Texas
4X4 test
OPK i have a 1991 f-150 with manual hubs so it may be diff.. but when you first put it into 4x4 you might hear like a clunk or a slight jerk thats just it shifting into 4x4, after that you shouldnt hear anything or feel anything, well at least from the 4x4.
1991 f-150 4x4 302
hooker headers, straght pipes
33 goodrich mudders
3" body
stock 3.55 gears
260-280 hp and 380-410 ft lbs of torque
all from crane camx powermax cam and lifters kit, bmk throttle body throttle body spcaer, crane cam rockers, more to come......
FORD BEATS THE BOW TIE EVERYTIME
1991 f-150 4x4 302
hooker headers, straght pipes
33 goodrich mudders
3" body
stock 3.55 gears
260-280 hp and 380-410 ft lbs of torque
all from crane camx powermax cam and lifters kit, bmk throttle body throttle body spcaer, crane cam rockers, more to come......
FORD BEATS THE BOW TIE EVERYTIME
Elder User
Joined: Dec 2000
Posts: 714
Likes: 0
From: Georgia
4X4 test
To check if the transfer case works:
Crawl underneath. You should be able to turn front driveshaft by hand. It should spin freely. Start the engine. Put truck into gear. Engage transfer case(4x4 hi). Put truck in park. Kill engine. Crawl under truck again. You shouldn't be able to move driveshaft by hand. If you can, then either you did not engage the 4wd properly, or the transfer case is not engaging properly. Repeat for 4x4 low range. You should get the same results; not moveable by hand.
To check if the hubs work:
If you have auto hubs, place a piece of masking tape(or something sticky and obvious) somewhere on the front axle that should turn when the hubs lock in. Engage the transfer case and either back up or drive fowrard about 15 feet. Look under the truck. If the tape moved, then the hubs did lock in. If the tape didn't move, then either the hub did not work, or that part does not rotate when the front axle is engaged. I am not too familar with your front axle, so I cant say exactly where to place the tape. On my trucks, you can see the axles and u-joints through the steering knuckles. I can't remember if it is the same for an Explorer or not, sorry.
Hope this helps and does not confuse you even more.
Jon
1989 F-150 XL- 4x4, 302, M50D
1995 Bronco Eddie Bauer- 351W, E40D
Crawl underneath. You should be able to turn front driveshaft by hand. It should spin freely. Start the engine. Put truck into gear. Engage transfer case(4x4 hi). Put truck in park. Kill engine. Crawl under truck again. You shouldn't be able to move driveshaft by hand. If you can, then either you did not engage the 4wd properly, or the transfer case is not engaging properly. Repeat for 4x4 low range. You should get the same results; not moveable by hand.
To check if the hubs work:
If you have auto hubs, place a piece of masking tape(or something sticky and obvious) somewhere on the front axle that should turn when the hubs lock in. Engage the transfer case and either back up or drive fowrard about 15 feet. Look under the truck. If the tape moved, then the hubs did lock in. If the tape didn't move, then either the hub did not work, or that part does not rotate when the front axle is engaged. I am not too familar with your front axle, so I cant say exactly where to place the tape. On my trucks, you can see the axles and u-joints through the steering knuckles. I can't remember if it is the same for an Explorer or not, sorry.
Hope this helps and does not confuse you even more.
Jon
1989 F-150 XL- 4x4, 302, M50D
1995 Bronco Eddie Bauer- 351W, E40D
Thread Starter
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Senior User
Joined: Feb 2002
Posts: 118
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From: USA
4X4 test
Thanks to both for your time and suggestions on how to check my 4X4 system. I can hear the small "clunk" when the switch does engage and as for the maskins, I'll do the trick.
:*
Tuned
Joined: Apr 2000
Posts: 393
Likes: 3
From: Merrill
4X4 test
>To check if the hubs work:
>If you have auto hubs, place a piece of masking tape(or
>something sticky and obvious) somewhere on the front axle
>that should turn when the hubs lock in. Engage the transfer
>case and either back up or drive fowrard about 15 feet. Look
>under the truck. If the tape moved, then the hubs did lock
>in. If the tape didn't move, then either the hub did not
>work, or that part does not rotate when the front axle is
>engaged. I am not too familar with your front axle, so I
>cant say exactly where to place the tape. On my trucks, you
>can see the axles and u-joints through the steering
>knuckles. I can't remember if it is the same for an Explorer
>or not, sorry.
>
>Hope this helps and does not confuse you even more.
>
>Jon
>1989 F-150 XL- 4x4, 302, M50D
>1995 Bronco Eddie Bauer- 351W, E40D
Even if the Hubs are not working. the axles will turn if the transfer case is working. you would have to drive it about 15 feet in 4x4 then jack up one side and try to turn the tire to see for sure that they locked in.
