Builds 1988 BJ74 “Number 1”

[cruiseroutfit]

Engineering folk might like this. Might interest some H55F users, hopefully it will fix mine.



Most might find it boring so I've attached a coloring sheet of a double cab you can print off color it.

View attachment 2942136


Remember don't eat the crayons and only draw on the paper.

View attachment 2942141








So in order to find different options for fixing my H55F leak, I started researching the different seal brands. NOK I believe is the OEM supplier. Could be wrong here as well.

The NOK seal was too tight with the speedi sleeve. The Harwal seemed to fit decent but has failed. There are some other brands I looked up that seem to fit, although I've never heard of them. I decided to try and find the SKF brand as I've heard good things about them. It appears they have a couple different avenues that might work for this application. I looked and researched WAY more that I wanted to know about seals. WAY too much.

Aktiebolaget Svenska Kullagerfabriken founded on 16 February 1907.
Sven Wingquist, inventor of the double-row self-aligning ball bearing, was one of the founding members and the first Managing Director.
1909 a subsidiary SKF started in US in 1909.
In 1990, SKF acquired CR Seals, Chicago Rawhide. CR Seals patented the "Perfect Oil Seal" in 1928. (insert @Gun Runner 5 or @cruiserdan age joke here).
That seal was made of leather. I didn't know the old seals were made of leather, however I never thought of it either...

anywho...new tech in radial seal design:


\The sealing lips of SKF radial shaft seals are manufactured from several materials and two different main designs. For detailed information, refer to the section Sealing lip materials. There are two main sealing lip designs that differ in the execution of the sealing lip edge. The “conventional” sealing lip (fig 2) has a straight edge,
View attachment 2942256

whereas the SKF WAVE lips (fig 3) are moulded with a hydrodynamic feature that results in the lip taking a sinusoidal path on its counterface surface.
View attachment 2942257



SKF WAVE seals represent one of the most important developments in radial shaft seals. The sealing lip is moulded to a special form, producing a relative movement on the counterface, imparting hydrodynamic properties. SKF WAVE seals are suitable for rotation in both directions. They pump the lubricant back into the bearing arrangement and expel contaminants. The sinusoidal form of the sealing lip considerably extends the path (fig 4) on the counterface surface and at the same time reduces the specific surface pressure at the sealing lip/counterface contact.

As a consequence, SKF WAVE seals produce up to 20% less friction (diagram 1) resulting in up to 30% lower temperatures (diagram 2) than conventional lip designs. Reduced friction and the sinusoidal path of the sealing lips help prevent the formation of deep tracks in the counterface, resulting in significantly extended service life. SKF WAVE seals are recommended where demands for operational reliability and long service life for machines and equipment are high.





Market speak? CHECK! does it work, I sure hope so. It appears a few companies use technology but SKF is the one I could find that had the right size.
The sinusoidal pattern, present in this sort of seals, support wet-running applications in various machines. While the shaft of the seal rotates, every point of the sealing lip coats a different place of shaft repeatedly and moistens it with the medium. This, as a result, lowers temperature rise and friction at the sealing place. Even the wave-like pattern of the contact path offers self-cleaning advantage. If any small dirt particle comes under the sealing lip, they are quickly removed from the contact area. It reduces the chance of tearing down and expands operating life of the equipment

View attachment 2942284






There...you either had a small learning experience or you got to color....

Sorry I may have missed it. Which seal is leaking on you?

NOK is the OE supplier for most seals. There are counterfiets out there and some marked 'NAK' too. Fwiw

 

[FJBen]

Sorry I may have missed it. Which seal is leaking on you?

NOK is the OE supplier for most seals. There are counterfiets out there and some marked 'NAK' too. Fwiw

H55F input seal. I believe mainly because there is a very small groove in the input shaft. Which apparently doesn't exist anymore and you can only find a used 3B input shaft. I ended up putting a speedo-sleeve on. The NOK seal I believe I got from you guys, it worked for a little while. Second one Harwal brand failed so I'm trying this different type of seal to see if it will help.

 

[cruiseroutfit]

H55F input seal. I believe mainly because there is a very small groove in the input shaft. Which apparently doesn't exist anymore and you can only find a used 3B input shaft. I ended up putting a speedo-sleeve on. The NOK seal I believe I got from you guys, it worked for a little while. Second one Harwal brand failed so I'm trying this different type of seal to see if it will help.

What year is your H55F? There are some input shafts floating around out there.

 

[FJBen]

What year is your H55F? There are some input shafts floating around out there.

1988

 

[PabloCruise]

Engineering folk might like this. Might interest some H55F users, hopefully it will fix mine.



Most might find it boring so I've attached a coloring sheet of a double cab you can print off color it.

View attachment 2942136


Remember don't eat the crayons and only draw on the paper.

View attachment 2942141








So in order to find different options for fixing my H55F leak, I started researching the different seal brands. NOK I believe is the OEM supplier. Could be wrong here as well.

The NOK seal was too tight with the speedi sleeve. The Harwal seemed to fit decent but has failed. There are some other brands I looked up that seem to fit, although I've never heard of them. I decided to try and find the SKF brand as I've heard good things about them. It appears they have a couple different avenues that might work for this application. I looked and researched WAY more that I wanted to know about seals. WAY too much.

Aktiebolaget Svenska Kullagerfabriken founded on 16 February 1907.
Sven Wingquist, inventor of the double-row self-aligning ball bearing, was one of the founding members and the first Managing Director.
1909 a subsidiary SKF started in US in 1909.
In 1990, SKF acquired CR Seals, Chicago Rawhide. CR Seals patented the "Perfect Oil Seal" in 1928. (insert @Gun Runner 5 or @cruiserdan age joke here).
That seal was made of leather. I didn't know the old seals were made of leather, however I never thought of it either...

anywho...new tech in radial seal design:


\The sealing lips of SKF radial shaft seals are manufactured from several materials and two different main designs. For detailed information, refer to the section Sealing lip materials. There are two main sealing lip designs that differ in the execution of the sealing lip edge. The “conventional” sealing lip (fig 2) has a straight edge,
View attachment 2942256

whereas the SKF WAVE lips (fig 3) are moulded with a hydrodynamic feature that results in the lip taking a sinusoidal path on its counterface surface.
View attachment 2942257



SKF WAVE seals represent one of the most important developments in radial shaft seals. The sealing lip is moulded to a special form, producing a relative movement on the counterface, imparting hydrodynamic properties. SKF WAVE seals are suitable for rotation in both directions. They pump the lubricant back into the bearing arrangement and expel contaminants. The sinusoidal form of the sealing lip considerably extends the path (fig 4) on the counterface surface and at the same time reduces the specific surface pressure at the sealing lip/counterface contact.

As a consequence, SKF WAVE seals produce up to 20% less friction (diagram 1) resulting in up to 30% lower temperatures (diagram 2) than conventional lip designs. Reduced friction and the sinusoidal path of the sealing lips help prevent the formation of deep tracks in the counterface, resulting in significantly extended service life. SKF WAVE seals are recommended where demands for operational reliability and long service life for machines and equipment are high.





Market speak? CHECK! does it work, I sure hope so. It appears a few companies use technology but SKF is the one I could find that had the right size.
The sinusoidal pattern, present in this sort of seals, support wet-running applications in various machines. While the shaft of the seal rotates, every point of the sealing lip coats a different place of shaft repeatedly and moistens it with the medium. This, as a result, lowers temperature rise and friction at the sealing place. Even the wave-like pattern of the contact path offers self-cleaning advantage. If any small dirt particle comes under the sealing lip, they are quickly removed from the contact area. It reduces the chance of tearing down and expands operating life of the equipment

View attachment 2942284






There...you either had a small learning experience or you got to color....

This post has so much win - crayons, sinusoidal wave patterns, moistening.
Good stuff!

 

[PabloCruise]

So when do we rebuild the T-case???

 

[jblueridge]

Marlin Crawler does not offer one of their HD seals in the right size?

I sent you a PM about other matters.

 

[FJBen]

Marlin Crawler does not offer one of their HD seals in the right size?

I sent you a PM about other matters.

I don’t believe they offer any HD seals that fit. The other issue I worry about it all the 80 series full time 4wd have problems with those seals leaking.

Sent PM back.

 

[jblueridge]

I have a set of the front axle seals installed. They are far more substantial than the OEM.

 

[FJBen]

So when do we rebuild the T-case???

I don’t remember the tcase rebuild timeline? How many miles is it?

I have a set of the front axle seals installed. They are far more substantial than the OEM.

I have the same seals on my front end, I’ve just heard bad things about full time for some reason. And the tranny input would def be full time.

 

[PabloCruise]

I don’t remember the tcase rebuild timeline? How many miles is it?




I have the same seals on my front end, I’ve just heard bad things about full time for some reason. And the tranny input would def be full time.

I figured you were pulling it off to drop the tranny?
But I guess you could pull them together - that sounds like even more fun!
LMK if you want help replacing that seal...

 

[FJBen]

I figured you were pulling it off to drop the tranny?
But I guess you could pull them together - that sounds like even more fun!
LMK if you want help replacing that seal...

Oh yeah I’ve pulled them together before. It’s pretty easy even with the cheap harbor freight jack. A few of the bell housing bolts suck but overall not too bad.

For sure will let you know, waiting for the parts to come in and hopefully some good weather.

 

[FJBen]

No tech...just fluff.

 

[FJBen]

What a difference a day makes.

back to below zero and a storm. Supposed to be in the 60's this weekend. I'm ready for spring to stay.

 

[FJBen]

Tried the @coldtaco trick of putting the battery charger/maintainer on it over night. It defiantly helped cranking speed and longevity of the battery, below zero and sitting outside is just hard on the truck. -4F had me cranking it multiple times before it fired over. Once it starts to fire, she kicks on quickly.

Webasto thermo top is looking better and better everyday.

 

[coldtaco]

Espar I think is a better choice

 

[AirheadNut]

Espar I think is a better choice

Any particular things about the Espar that make it better? I've always just assumed Webasto because they're easy and inexpensive to get used. Espars seem to be less common so I usually don't consider that an option.

 

[coldtaco]

Any particular things about the Espar that make it better? I've always just assumed Webasto because they're easy and inexpensive to get used. Espars seem to be less common so I usually don't consider that an option.

My understanding is that with espar you can get individual parts vs you have to get assemblies with Webasto, to get a bolt for example.

 

[FJBen]

After taking WAY too long to get here...the seal is finally here. not sure when I'll get to work on it. This seal isn't rubber lined like the other seals, not sure how that will play out, but I will find out soon enough.

Here you can see the lip or the "wave technology" they talk about. Hopefully it works.

 

[FJBen]

Always fun to get the tires rotated. They had me back it out...apparently backing a RHD, diesel 5 speed over lift arms is a lost art.

nah, they are cool, they love the cruiser. These Geolanders have been a fantastic tire. Still nice and smooth.


Trying to decide to stay with 255's or bump up to 285/75r17's.

I've got 25,700 miles on them and I'm down to 8~10/32nds left which is 40~50% life span left. I usually sell tires around the 40% range so I've been looking for a size up, which comes with other problems, namely the rims/spacers.

My 255's measured out to 32.6" new, I don't have the actuals on the 285's...

	285/75-17	255/85-16
Diameter inches (mm)	33.83 (859.3)	33.07 (839.9)	-0.76 (-19.4) -2.3%
Width inches (mm)	11.22 (285)	10.04 (255)	-1.18 (-30) -10.5%
Circum. inches (mm)	106.28 (2699.57)	103.88 (2638.62)	-2.4 (-60.95) -2.3%
Sidewall Height inches (mm)	8.42 (213.75)	8.53 (216.75)	0.12 (3) 1.4%
Revolutions per mile (km)	596.15 (370.43)	609.92 (378.98)	13.77 (8.56) 2.3%

There are more tires available in the 17" range. Seems like they are slowly closing down the 16's as well.

255/85r16 = $331/tire
285/75/r17 = $307/tire

I paid $200/tire when I got these a couple of years ago. I'm definitely leaning more towards the 285's, as I have flares and it would fill that out a little better. I will probably watch to see which tire places have the best sale and then jump on the 285's, rims and spacers.



The Wolfhound is thoroughly bored with this conversation...