Topic: 1977 Johnson 2 hp 2R77C Carb – Page 3 – Antique Outboard Motor Club,Inc

This topic has 29 replies, 8 voices, and was last updated 9 years, 3 months ago by PugetSoundBoater.

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May 14, 2016 at 1:14 am #36530
billw
Participant
US Member
Mumbles, might I ask more specifically where you got a lower crank bearing for one of those?

Long live American manufacturing!
May 14, 2016 at 1:53 am #36532
fisherman6
Participant
US Member
Yikes! 😮 Ill be sure to check that on my ’75 when i get into that one. My ’78 runs pretty nicely now. I’ll have to make a vid of that one sometime. I just resealed the gearcase and replaced the impeller on that one a few weeks ago.

OldJohnnyRude on YouTube
May 14, 2016 at 4:14 am #36534
Mumbles
Participant
quote BillW:

Mumbles, might I ask more specifically where you got a lower crank bearing for one of those?

I got them from China as my dealer couldn’t find any. These Torringtons were the correct size.

http://www.aliexpress.com/item/New-Torr … 57294.html
May 14, 2016 at 9:26 am #36536
billw
Participant
US Member
Thanks! Another one in my stable may now live again!

Long live American manufacturing!
May 14, 2016 at 4:06 pm #36543
fleetwin
Participant
US Member
Yeah, the lower bearing/seal housings are a trouble spot for these engines, prone to bearing wear/water damage. To replace the lower seal, one must first remove (and destroy) the lower needle bearing from the housing to get at the seal. I always used to just replace the complete unit, not possible these days. Unfortunately, the lower crank race was usually worn as well when water had damaged the lower needle bearing.
May 14, 2016 at 4:15 pm #36545
Mumbles
Participant
I managed to press the bearing out from the bottom of the housing after making a slightly oversize shaft to fit the bearing but a large drift would probably work to. Once the bearing was out, the seal was easy. Assembly was the reverse.
May 14, 2016 at 7:05 pm #36555
PugetSoundBoater
Participant
Mumbles,Surprised to read you had to order the lower bearing from China. I wrote the demensions down from the Torrington link ,gotta be a source here in the States?
Seems like the upper and lower bearings are one of the main causes of poor running /hard starting, the timing thrown off by crank movement. I’ll be doing it on both of my 2 hp. On the to do list , it keeps growing…

"Some people want to know how a watch works, others just want to know what time it is"
Robbie Robertson
May 14, 2016 at 7:14 pm #36556
PugetSoundBoater
Participant
Mumbles, you have a source/mfg Pn# for the lower seal?

"Some people want to know how a watch works, others just want to know what time it is"
Robbie Robertson
May 15, 2016 at 2:39 pm #36583
Mumbles
Participant
Upper and lower seals P/N is 315256, which I obtained thru my local OMC/BRP dealer.

The only reason I sourced the bearings offshore was they were a heck of a lot cheaper than anything I could find on this side of the Pacific and these particular ones came in a pack of four and possibly had free shipping. Can’t remember. Also, going straight to the source and avoiding the middleman helps to keep costs down! 😎
May 15, 2016 at 6:35 pm #36588
PugetSoundBoater
Participant
Top and bottom bearing the same? That would be cool if ya get 4 from the overseas dealer. ME wants $20 for the top one.

"Some people want to know how a watch works, others just want to know what time it is"
Robbie Robertson
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