Drive shaft

[rideglobally]

my rig is 1983 HJ47. It has a short drive shaft then a carrier bearing connected to a longer shaft to the rear end. The carrier bearing has gone out on me a couple of times. Thinking of removing the short shaft and just install one long one. It will be 62" long drive shaft. Will this work? What is the purpose of having these two shaft? I know there are smart engineers at Toyota.

 

[Brownd3max]

IMO- personally, I'd stick with what was originally designed. As a new quality bearing is installed, I'd carefully check the perpendicular/squareness of it's placement. How many miles B4 failure?

 

[rideglobally]

the last one failed at about 10k

 

[Brownd3max]

I'd consider splurging on 2 new U-joints as well.

 

[Poser]

IMO- personally, I'd stick with what was originally designed. As a new quality bearing is installed, I'd carefully check the perpendicular/squareness of it's placement. How many miles B4 failure?

I have only been at this for 28 years, and while am not claiming to have seen everything, but nothing about that multiple-piece rear drive shaft looks like an 'original design'...


I would get a new drive shaft made, that does not have a hanger bearing in it.

 

[rideglobally]

I have only been at this for 28 years, and while am not claiming to have seen everything, but nothing about that multiple-piece rear drive shaft looks like an 'original design'...


I would get a new drive shaft made, that does not have a hanger bearing in it.

thanks Poser, both drive shaft has always been there. but you are correct when we installed the 12HT with the h55 transmission we had to cut the small drive shaft by 3". you are correct this is not the original design but there has always been 2 drive shaft. the mount for the carrier bearing is fabricated not oem. do you think a 62" drive shaft is too long? did HJ 47 came with 2 drive shaft? thanks

 

[Living in the Past]

I bought most of the drivetrain from a 6/84 FJ47RV. Rear drive line was a single tube. This was from the the Australian market. I have never seen a two piece drive line listed anywhere. I agree with Poser doesn't look stock. Could be something special order mine, government?

 

[Poser]

t the mount for the carrier bearing is fabricated not oem. do you think a 62" drive shaft is too long? did HJ 47 came with 2 drive shaft? thanks

i have not ever seen a "factory" two-piece rear drive shaft on any 40 series.

A 62" drive shaft would not be "too long"

 

[micruz60]

Could be a lift? Causes the bearing fail.

The 60 series runs a long rear driveshaft, look to that for comparison?

 

[rideglobally]

I bought most of the drivetrain from a 6/84 FJ47RV. Rear drive line was a single tube. This was from the the Australian market. I have never seen a two piece drive line listed anywhere. I agree with Poser doesn't look stock. Could be something special order mine, government?

i have not ever seen a "factory" two-piece rear drive shaft on any 40 series.

A 62" drive shaft would not be "too long"

great thanks, this is very helpful. this rig started out as an emergency vehicle for the Australian mines 11 of them where special ordered from Toyota. that maybe the reason it has 2 drive shaft. the chassi was extended about 1.5'. part store says the carrier bearing is from a toyota pick up. thx

 

[rideglobally]

Could be a lift? Causes the bearing fail.

The 60 series runs a long rear driveshaft, look to that for comparison?

ok thx, yes it is lifted also have airbags in the rear

 

[rideglobally]

Could be a lift? Causes the bearing fail.

The 60 series runs a long rear driveshaft, look to that for comparison?

Sorry hit post too soon. Yes it is lifted but not crazy high. Should I be thinking about a special u joint? See pictures thx

 

[emac]

Neat looking rig! I dont think the radiator cooling fan is stock either

 

[cruiserfj45]

Looks good to me. My only concern with the single piece driveshaft would be the possibility of it hitting the cross member when it drops down but I would make it work by changing the cross member.

 

[micruz60]

First:
Cool Rig!!

If it was custom , then I would try to match angles of flanges at rear diff and rear most u-joint...
Should be parallel | |

Centerline of diff should be parallel to centerline of shaft at carrier bearing.
Might consider, as Poser said, to get new single driveshaft. That way it is balanced.

 

[Living in the Past]

I bought most of the drivetrain from a 6/84 FJ47RV. Rear drive line was a single tube. This was from the the Australian market. I have never seen a two piece drive line listed anywhere. I agree with Poser doesn't look stock. Could be something special order mine, government?

Surprised no one caught the FJ47. It was a HJ47 not a FJ47.

 

[Poser]

Surprised no one caught the FJ47. It was a HJ47 not a FJ47.

Who am I to question you?

 

[Redgrrr]

Some high end rock buggies use a carrier on the front driveshaft to keep it up out of the way slightly higher than the lower links so it's protected from rocks. The one your using from a mini truck may not be robust enuf for the weight of your camper truck. Something custom may be in your future.

Just had to replaced one in a freinds buggy with a stainless steel unit from whistler bearing that should last longer after I sheered one of the mounting ears off on the older smaller one. That one lasted nine years in a very harsh use environment.

 

[Living in the Past]

Curious if the rear section may be the standard driveline length and short one added to make up for the 1.5' added to the wheel base. The HJ47's front driveline had a double cardan U joint at the T case. Does yours have one? The rear full floater looks like it has a front axle drive plate. Different then the standard inner axle on the normal full floater. Easy to convert to lock hubs but vehicle is pretty big to flat tow.

 

[rideglobally]

Curious if the rear section may be the standard driveline length and short one added to make up for the 1.5' added to the wheel base. The HJ47's front driveline had a double cardan U joint at the T case. Does yours have one? The rear full floater looks like it has a front axle drive plate. Different then the standard inner axle on the normal full floater. Easy to convert to lock hubs but vehicle is pretty big to flat tow.

I am going with a one drive shaft. No i don't have double cardan, at the front t case. I have a lock hub at the front. I don't have double cardan in the rear. Do you think I need one. I have arb lockers front and rear.thx