Diff cover seal

[John Galt]

What is the best material/procedure to use for sealing the diff cover when using synthetic gear oil? Should a gasket be used?

 

[ozcrusier]

I would use a gasket with three bond glue. Honda Yamaha Locktight or whatever you have in the shed. Best be safe then stripping out again for a oil weep.

 

[roscoFJ73]

Same stuff they use on the engine sump would be ok. I dont think synth needs special gaskets. I like using the paper gasket with permatex, always worked for me

 

[jblueridge]

I agree with those further south... gasket + layers of sealant.

I'd use this
http://www.permatex.com/products-2/...l-resistance-rtv-silicone-gasket-maker-detail

 

[Chester]

Yup. Paper gasket, TOYOTA FIPG black is a best choice for RTV.

 

[John Galt]

Thanks for the info. What is the Toyota part number for the diff cover gasket? Is the gasket the same for front and rear diffs?

 

[Locked79]

There's no diff cover on these 70 series, but if you mean the gasket between the 3rd member and housing then this is the part # 42181-36010. If your cruiser is pre 90s, this gasket is used in the front also. If you have the smaller 8" hi pinion front like post 90s 70 series, it won't work.

 

[John Galt]

On the late 80s BJ74 there is a removable cover on the rear diff, I'm not referring to the 3rd member gasket,
but you're right, the front cover is not removable, that's my mistake for assuming the front was the same.

What is the part number for the rear diff cover gasket?

 

[OGBeno]

42183-35010

This is a cork-style material gasket vs the paper ones for the diffs.

 

[cruiserdan]

I like this stuff a lot. I have been using it for decades.

 

[Locked79]

On the late 80s BJ74 there is a removable cover on the rear diff

Well there ya go. You learn something new everyday. Good to know.

 

[Locked79]

Could you post a pic for future reference? Cheers

 

[John Galt]

 

[Locked79]

Cool. Thanks. Thats the first one like that I've seen.

 

[cruiserdan]

Semi-float axles. Year model does not matter. Semi-float has a cover, full-float does not.

 

[Locked79]

Thanks

 

[John Galt]

Semi-float axles. Year model does not matter. Semi-float has a cover, full-float does not.

Can you please explain the functional differences between semi-float, full-float , and non-float[?] axles?

Thanks for the pn for the cover gasket, the dealer could order it even though the vehicle isn't in their Cdn database.

 

[cruiserdan]

Full float axles have a spindle on the end of the housing and the hub is running on two bearings like the front axle. The axle shaft does not support the weight of the vehicle and can be removed without removing the hub. This is like a heavy 3/4 or one ton pickup.

Cruiser semi floating shafts are held in by clips at the diff end hence the need for an inspection cover so that the clip can be removed in order to remove the shaft. Full float shafts are not clipped so there is no need for a removable cover.

Full float axles generally are more robust (two bearings versus one) and the axle shaft's only job is to rotate without bearing vehicle weight.

 

[John Galt]

Never heard of 'semi-floating' shafts before. How is that any different from normal 'non-floating' shafts? Is the difference anything but semantics?
It appears that rear axle shafts are floating or not, what would make them 'semi'?
Isn't that like being semi-pregnant?

 

[cruiserdan]

Odd, I have not heard the term "non-floating".

Perhaps Semi-floating and non-floating are different interpretations of the same thing?

Semi-floating would be load bearing on one end and in the diff on the other end.