Pre-runner vs. 4WD front Axle Hub & Steering knuckle
Aug 14, 2016 | 11:54 AM
#1
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From: Phoenix, AZ
Pre-runner vs. 4WD front Axle Hub & Steering knuckle
***EDIT***
It might be safe to move your 4WD truck without the diff and/or axles in, but just as likely it's very unsafe.
Read the third post in this thread before doing it.
***EDIT***
Right now I need to move my 4wd tacoma. I have the front diff and the CV joints out and I don't want to put them back in (since they will have to come right back out after it's moved).
Looking at the FSM, it appears that the pre-runner uses the same setup as the 4WD, except obviously minus the diff and CVs. This leads me to believe that I can safely move the truck (drive it?) without the diff and CVs installed.
Has anybody done this? Can anybody confirm or refute that the hub/knuckle is the same on the 4WD and the Prerunner?
It might be safe to move your 4WD truck without the diff and/or axles in, but just as likely it's very unsafe.
Read the third post in this thread before doing it.
***EDIT***
Right now I need to move my 4wd tacoma. I have the front diff and the CV joints out and I don't want to put them back in (since they will have to come right back out after it's moved).
Looking at the FSM, it appears that the pre-runner uses the same setup as the 4WD, except obviously minus the diff and CVs. This leads me to believe that I can safely move the truck (drive it?) without the diff and CVs installed.
Has anybody done this? Can anybody confirm or refute that the hub/knuckle is the same on the 4WD and the Prerunner?
Last edited by chromatest; Aug 16, 2016 at 07:03 AM. Reason: added disclaimer at the top
Aug 14, 2016 | 12:05 PM
#2
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Joined: Aug 2007
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From: Phoenix, AZ
Toyota Parts indicates that the same hub fits both vehicles:
http://parts.toyotaofdallas.com/toyo...nt-brakes-scat
As well as the same Knuckle
The FSM diagram doesn't show any other locknuts or retaining clips or anything different. On the Prerunner, there is a dust shield on the inner where the CV would go.
http://parts.toyotaofdallas.com/toyo...nt-brakes-scat
As well as the same Knuckle
The FSM diagram doesn't show any other locknuts or retaining clips or anything different. On the Prerunner, there is a dust shield on the inner where the CV would go.
Aug 16, 2016 | 07:02 AM
#3
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Joined: Aug 2007
Posts: 55
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From: Phoenix, AZ
Well, I answered this question definitively yesterday.
I drove the truck and the passenger side brakes starting making a hell of a sound. Initially, I thought I cracked a pad compressing them with a c-clamp to get them back on the rotor (the brake pedal was pressed while the calipers were off). Then I noticed that the hub on the drivers side was in a different position than the passenger side. At that point, it became clear that the only thing actually holding the passenger side hub (and wheel) in place was the brakes!
The driver's side was totally fine, so I'm guessing that the hub retaining clip on one side held better than the other? Unknown.
Since then, I've done a little more careful research and realized that *THE NEXT PAGE* of the FSM shows a different diagram for the pre-runner. Apparently, the Pre-Runner is the same as the 4WD with free-wheeling hubs. So, while a version of the 4WD, does indeed use the same hub as the Pre-Runner, *MY* version of the 4WD does not.
So, if you have a tacoma with free-wheeling hubs, you can most likely safely drive without your diff or front CV joints/axles installed. I'm clearly not a mechanic, so it's up to you to make the call if it's safe for you to do this. If you do not have free wheel hubs (like my truck), it is definitely not safe to drive without the axles properly bolted in place. You'll probably be fine moving it around a yard, or getting it on and off a trailer to bring it to the mechanic (I drove it for about 1.5 miles and nothing catastrophic happened), but I wouldn't do anything more than rolling it into a parking spot or onto a lift.
In case you're wondering, I've now purchased a new rotor, a new front wheel bearing, new oil seals, and I have a new snap ring on the way. I have new brake pads to go on as well.
I drove the truck and the passenger side brakes starting making a hell of a sound. Initially, I thought I cracked a pad compressing them with a c-clamp to get them back on the rotor (the brake pedal was pressed while the calipers were off). Then I noticed that the hub on the drivers side was in a different position than the passenger side. At that point, it became clear that the only thing actually holding the passenger side hub (and wheel) in place was the brakes!
The driver's side was totally fine, so I'm guessing that the hub retaining clip on one side held better than the other? Unknown.
Since then, I've done a little more careful research and realized that *THE NEXT PAGE* of the FSM shows a different diagram for the pre-runner. Apparently, the Pre-Runner is the same as the 4WD with free-wheeling hubs. So, while a version of the 4WD, does indeed use the same hub as the Pre-Runner, *MY* version of the 4WD does not.
So, if you have a tacoma with free-wheeling hubs, you can most likely safely drive without your diff or front CV joints/axles installed. I'm clearly not a mechanic, so it's up to you to make the call if it's safe for you to do this. If you do not have free wheel hubs (like my truck), it is definitely not safe to drive without the axles properly bolted in place. You'll probably be fine moving it around a yard, or getting it on and off a trailer to bring it to the mechanic (I drove it for about 1.5 miles and nothing catastrophic happened), but I wouldn't do anything more than rolling it into a parking spot or onto a lift.
In case you're wondering, I've now purchased a new rotor, a new front wheel bearing, new oil seals, and I have a new snap ring on the way. I have new brake pads to go on as well.
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