P15 Gearshift Housing Seals

[Sam Buchanan]

My '48 P15 is losing tranny fluid in the area of the gearshift housing. It appears any loss would be through the o-rings on the selector shafts and past the housing gasket. At one time I found a source for the gasket and o-rings but can't find that anymore.

 

Anyone have info about resealing the housing and shafts and where these o-rings and gasket can be found? They may be generic--in that case I should be able to source them and can make a housing gasket if necessary (Permatex Ultra-Black?).

 

I use Redline MTF in the tranny and it being synthetic may be aggravating the leakage, but I LOVE how the transmission shifts with that lubricant.

 

 

Edited June 21, 2022 by Sam Buchanan

[DJK]

On my 52 Cranbrook I used an O ring from the hardware store for the upper shaft. On the side shaft, I sourced an "X" cut o ring from Clearwater Hydraulics (ebay) #2-111/Q       SIZE = 7/16 x 5/8 x 3/32. Hope this helps.

[Sniper]

This is what I came up with for my 51 Cambridge

 

I am going to pull my trans when I swap the 230 in.  Thinking ahead I should probably reseal it and clean it up.  Nice paint, etc.

So with that in mind I am thinking to put together a good reseal kit.  Best Gasket sells a gasket kit, no seals.

So here's my reseal kit listing

Best Gasket 5076 - gaskets
NATIONAL 8160S -  output shaft seal
Speedo adapter seal - Honda 91204-HB3-004
Verify the input retainer groove lines up with the drain.

lower shifter shaft seal Clearwater Hydraulics #2-111Q, McMaster Carr 90025K224

Clutch and shifter bushings, any insights there? 1135626 (clutch)

What else am I missing?

Thanks

Oil Seal, Speedometer Drive Pinion (chrome leather, 11/62 I.D.  37/64 in O.D.m .150 in thick)

 

[Sam Buchanan]

Excellent info......thanks!

[Sniper]

One thing I notice, earlier transmissions use a different part number speedometer pinion seal than my 51.  No idea what the difference is though,

 

652840 - P15 up to 15250253  see thread

 

1134949 after, see thread

 

 

 

 

 

 

[DJK]

23 hours ago, Sniper said:

This is what I came up with for my 51 Cambridge

 

I am going to pull my trans when I swap the 230 in.  Thinking ahead I should probably reseal it and clean it up.  Nice paint, etc.

So with that in mind I am thinking to put together a good reseal kit.  Best Gasket sells a gasket kit, no seals.

So here's my reseal kit listing

Best Gasket 5076 - gaskets
NATIONAL 8160S -  output shaft seal
Speedo adapter seal - Honda 91204-HB3-004
Verify the input retainer groove lines up with the drain.

lower shifter shaft seal Clearwater Hydraulics #2-111Q, McMaster Carr 90025K224

Clutch and shifter bushings, any insights there? 1135626 (clutch)

What else am I missing?

Thanks

Oil Seal, Speedometer Drive Pinion (chrome leather, 11/62 I.D.  37/64 in O.D.m .150 in thick)

 

O ring for the upper shaft seal.

[Sniper]

45 minutes ago, DJK said:

O ring for the upper shaft seal.

I don't have a spec for that which is why it's not listed

[DJK]

5 hours ago, Sniper said:

I don't have a spec for that which is why it's not listed

I just matched one up.

[Tired iron]

I just did this job this morning. Got my gasket kit from bernbaum, if I remember right. 

 

It's too bad these transmissions sit sideways as it makes for much more sealing issues.