Replacing or Rebuilding Intermediate Shaft Housing in 1994 Superjet

[E350]

You know how you pour a beer from a bottle into a glass, well when I filled up the engine compartment in our 1994 Superjet with water, that is how the water looks when it pours out (not "leaks" out, not "drips" out but "pours" out) on the bottom of the hull in the tunnel where the drive shaft comes out of the hull.

I tried to post up a diagram of the intermediate shaft housing in the Manual but the photo didn't come out that well.

It appears that the intermediate shaft housing has:

one "oil seal," and
three bearings.

This is what it says on the label on top of the intermediate shaft housing:
Intermediate Shaft Housing:

JD – 2 – D
64V 502144
X

So a few questions:

1. Do you replace the intermediate shaft housing? If so where do you recommend that I buy the replacement?

2. Do you rebuild the intermediate shaft housing? If so where do you recommend that I buy the seals and bearings? (I believe that I am capable and have the required press to rebuild it if that is the preferred way to go.)

3. Must the engine be removed to remove and reinstall the intermediate shaft housing?

4. Any other suggestions for tools or techniques would be appreciated.

 

[SuperJet-Dave]

JetManiac did a good job with advice and rebuild of my midshaft and pump the other week. I do not have a press and was not sure I was capable to do it correctly. They have OEM and aftermarket parts. (I went OEM).
You do need to pull the motor forward a few inches to pull the midshaft housing.. not much different amount of work than removing the motor.
Your problem may have other issues. Not sure why you have such a large leak. Could the seals/bearings be torn from a misaligned driveshaft? A loose pump??? Or could be simply from over-greasing?
May need to pull it all apart to get some clues.
Good luck

 

[augustaf]

There is one bearing , three seals and two o rings, besides the housing - which may be bad. You can learn how to rebuild the unit or do it the easy way and have member jetmaniac do it for you.

 

[E350]

Superjet-Dave: If I just pull the engine forward, do I have to unbolt the exhaust? I assume so but would like to avoid it if possible.
I will check for all you mentioned and will take pictures of what I find.
I notice in your signature that you have a 93 as well as a 01 Superjet.
I just got off the phone with Scott at Blowsion regarding his intermediate shaft seal and bearing rebuild kit.
He says that his kit may or may not fit my 1994's intermediate shaft housing because although the 1995 to current models are the same, the 1994 was a transitional year which may be the old shaft housing which he seems to remember being different.

Which year Superjet of yours did you have Jetmaniac rebuild the intermediate shaft housing?

Do you know if your '93 uses the same bearings as your '01?

augustaf and Superjet-Dave: I just posted on Jetmaniac's master parts page on this forum. Is that how I should get ahold of him? I don't facebook.

 

[rrlc]

If your midshaft housing has the zerk fitting to regrease it then its the newer style. If it is the one that has no grease fitting, then it is the older one. They are not interchangeable because the mounting bolt patterns are different. Be sure to seal it to the hull with some silicone when you install the new one.

 

[SteveC]

‘93 superjet midshaft has grease zerk/fitting, but is shorter and different bolt pattern than ... uh, “later models”. I can’t say for sure when the change took place. Possibly ‘96?

Note that the zerk is actually on the end of a hose, but the point is the seal in a ‘93 midshaft can be greased through a fitting.

You can choose your supplier as you like, but my suggestion is to send a private message to @JetManiac and have him get you going.

 

[JetManiac]

Superjet-Dave: If I just pull the engine forward, do I have to unbolt the exhaust? I assume so but would like to avoid it if possible.
I will check for all you mentioned and will take pictures of what I find.
I notice in your signature that you have a 93 as well as a 01 Superjet.
I just got off the phone with Scott at Blowsion regarding his intermediate shaft seal and bearing rebuild kit.
He says that his kit may or may not fit my 1994's intermediate shaft housing because although the 1995 to current models are the same, the 1994 was a transitional year which may be the old shaft housing which he seems to remember being different.

Which year Superjet of yours did you have Jetmaniac rebuild the intermediate shaft housing?

Do you know if your '93 uses the same bearings as your '01?

augustaf and Superjet-Dave: I just posted on Jetmaniac's master parts page on this forum. Is that how I should get ahold of him? I don't facebook.

You have messaged JetManiac before.

 

[JetManiac]

If your midshaft housing has the zerk fitting to regrease it then its the newer style. If it is the one that has no grease fitting, then it is the older one. They are not interchangeable because the mounting bolt patterns are different. Be sure to seal it to the hull with some silicone when you install the new one.

This is not totally correct. The older housings were in 90-93 in superjet 650's. The 90 SJ had no grease fitting, but it was added sometime mid '91 I think @augustaf may remember. So many of the smaller housing have a grease fitting.

Newer larger housings started in 1994 with the 701 motor. All of the 701 housings have a fitting for a grease hose.

http://www.x-h2o.com/index.php?thre...building-sn-vs-rn-etc.105232/#js-post-1212770

 

[E350]

Steve: I just looked at a blurry picture I took last night of the intermediate shaft housing and there is tube coming off the left/port side of the housing. I just sent a pm to Jetmaniac and cancelled the rebuild kit from Blowsion and will send the housing to Jetmaniac for the rebuild because he will have the bearings and seals to rebuild either version of the housing.

@JetManiac Do I remove the battery, fuel tank and then unbolt the exhaust and the engine mounts and then just slide the engine forward? Then the intermediate shaft slides forward and the "fingers" uncouple? Then pull out the shaft and then unbolt the shaft housing?

 

[SteveC]

Steve: I just looked at a blurry picture I took last night of the intermediate shaft housing and there is tube coming off the left/port side of the housing. I just sent a pm to Jetmaniac and cancelled the rebuild kit from Blowsion and will send the housing to Jetmaniac for the rebuild because he will have the bearings and seals to rebuild either version of the housing.

That's almost certainly the hose I'm talking about: it runs from the midshaft housing up to a mount point on the intake (presumably to make accessing it with a grease gun easier).

 

[SuperJet-Dave]

Superjet-Dave: If I just pull the engine forward, do I have to unbolt the exhaust? I assume so but would like to avoid it if possible.
I will check for all you mentioned and will take pictures of what I find.
I notice in your signature that you have a 93 as well as a 01 Superjet.
I just got off the phone with Scott at Blowsion regarding his intermediate shaft seal and bearing rebuild kit.
He says that his kit may or may not fit my 1994's intermediate shaft housing because although the 1995 to current models are the same, the 1994 was a transitional year which may be the old shaft housing which he seems to remember being different.

Which year Superjet of yours did you have Jetmaniac rebuild the intermediate shaft housing?

Do you know if your '93 uses the same bearings as your '01?

augustaf and Superjet-Dave: I just posted on Jetmaniac's master parts page on this forum. Is that how I should get ahold of him? I don't facebook.

JetManiac rebuilt my 04 SJ midshaft. To move the motor forward I had to simply disconnect my exhaust pipe from the rubber hose connecting to the water box. Not sure what pipe you have but should be straightforward. Also need to remove fuel tank and battery mount. Just PM Jetmaniac

 

[JetManiac]

Steve: I just looked at a blurry picture I took last night of the intermediate shaft housing and there is tube coming off the left/port side of the housing. I just sent a pm to Jetmaniac and cancelled the rebuild kit from Blowsion and will send the housing to Jetmaniac for the rebuild because he will have the bearings and seals to rebuild either version of the housing.

@JetManiac Do I remove the battery, fuel tank and then unbolt the exhaust and the engine mounts and then just slide the engine forward? Then the intermediate shaft slides forward and the "fingers" uncouple? Then pull out the shaft and then unbolt the shaft housing?

Yes, except the midshaft and housing are removed as a single unit. The shaft is pressed into the housing with a press and cant be slid out by hand.

 

[E350]

Copy that. I will try to do it this evening after work.

 

[E350]

SuperJet-Dave: Spot on buddy! Just remove the battery and battery tray and the fuel tank and the waterbox rubber hose where it connects to the front of the exhaust and then remove the four engine mount bolts, remove the intermediate shaft cover, and the rubber hose which goes from the intermediate shaft housing to the zerk fitting below the carburetor and then pull the engine forward to access the three bolts which hold the intermediate shaft to the bulkhead.

JetManiac: I don't want you to rebuild the intermediate shaft housing. The rubber is rotting and pulling away from the aluminum housing. Can I buy a complete new oem unit from you? Or do you rebuild the unit by using a new oem housing just and my current intermediate shaft and the coupler? How much?