| Author |
Message |
    
TxGalz Dah
Member
Username: txgalzdah
Post Number: 69
Registered: 09-2008
| | Posted on Tuesday, October 20, 2009 - 10:17 pm: | 
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I have a 1967 120 MR, 1.98:1 SN 2072674. I have all my bearings, seals and shims for the upper gear house. I understand the need for the gear clearance being precise.
My manuals all give numbers for the shim tools. The numbers are driven gear, early 45878, late model 60526, drive gear, early 45877, late model 45877.
I am all for using the right tool for the job and doing the job right. My problem is the info I have I am unable to determine which tool to use. Where is the dividing line between early/late?
Regards,
TxGalz Dah |
makomark
Senior Member
Username: makomark
Post Number: 1723
Registered: 09-2008
| | Posted on Tuesday, October 20, 2009 - 10:51 pm: |
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We used to have one set of shim tools for the upper in the shop where I worked. The drive gear tool - goes in just like the top cap - had three cutouts, X, Y, & Z. The choice was determined by the gear ratio and was stated in the manual. The driven gear tool also had three reference points. They were separately by 90 degrees where the drive gear's tool's faces were separated by 120 degrees.
If you have the tools and just need the X,Y,orZ, I'm sure Bt or KGhost can provide the proper choice....Guy may even have the manual and could provide same. I would but don't have any outdrive manuals. |
Kghost
Senior Member
Username: kghost
Post Number: 1031
Registered: 07-2008
| | Posted on Wednesday, October 21, 2009 - 06:50 am: |
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I believe I have the tool but I do not have the manual for that year.
What is that outdrive? Is it a I or 1???
I will have to look when I get home.
If someone can supply the manual (online) or link to it I will look. |
makomark
Senior Member
Username: makomark
Post Number: 1727
Registered: 09-2008
| | Posted on Wednesday, October 21, 2009 - 08:09 am: |
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K:
he said it was an MR. I think I've done two and that was years ago. From what I remember, they get rebuilt just like a I drive. Never checked but suspect the service/replacement parts make them into I drives when done. |
Kghost
Senior Member
Username: kghost
Post Number: 1032
Registered: 07-2008
| | Posted on Wednesday, October 21, 2009 - 08:44 am: |
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I do not believe a MR was available in 1967.
It would have to be a I or 1 ????
When I get home I will look closer as I have a 2000 merc parts cd and I can look up stuff by serial number and it will in turn tell me what year and what type.
If it is a MR drive then it is not original for his boat and if so then I have the manual at home.# 6 I believe. |
TxGalz Dah
Member
Username: txgalzdah
Post Number: 70
Registered: 09-2008
| | Posted on Wednesday, October 21, 2009 - 09:03 am: |
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As far as the X,Y,Z of it goes, I have that information in my Seloc manual. It gives the serial number as "279nnnn and below" for the "X" marker as best as I can remember without the book in front of me. The issue is all three manuals list two different tools, one for early model and one for a late model. Where is the dividing line?
As far as the outdrive goes, Mercruiser looked up my SN and told me it was a MR, pre-Alpha. Of course we are only human and the tech may have had limited references at his disposal. The reference to the I or 1 type is beyond my realm of experience. As of this writing anyway.
Kghost, "MR's not available in 1967," is that because it wasnt out yet or it was retired by then? Is there a place I can read up on the different types of MR, I and 1?
Regards,
TxGalz Dah |
Guy Gaspar
Senior Member
Username: guyjg
Post Number: 5435
Registered: 08-2006
| | Posted on Wednesday, October 21, 2009 - 09:48 am: |
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Sorry, I only have a 1987 manual. |
Kghost
Senior Member
Username: kghost
Post Number: 1033
Registered: 07-2008
| | Posted on Wednesday, October 21, 2009 - 10:03 am: |
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Also I made a error, it may be a R drive.
I think the order went I the R then MR then Alpha.
The MR drive was not available yet.
I believe the MR came out in the mid to late seventies if not early eighties.
There ia almost no diffefrence between MR and Alpha.
The difference between the I and R and MR is easily identified by how many large needle bearings there are just above the pinion gear in the lower unit.
I belive all MR and Alpha's had 18 and the I/R drives had 11 if I remember correctly.
If you can confirm this this would be a tell tale.
Although you could ahve any lower vs a upper.
Does the upper have the eye whole biult into the top cover?? if so it is definatly a I or R.
Let us know. |
TxGalz Dah
Member
Username: txgalzdah
Post Number: 71
Registered: 09-2008
| | Posted on Wednesday, October 21, 2009 - 12:35 pm: |
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Yes, the top cover has the eye built into the cover. I am confident that I am pre-alpha as the parts I have ordered so far seem to fit well in that category. As I am learning here I see that pieces and parts were interchangable or upgradable.
I havent gotten into the lower unit yet. But to confirm 11 pins in the needle bearing above the pinion gear it looks like that is where I am headed. That is really valuable information on identifying different species. Thanks so much.
I will make my game plan for getting into the lower unit and get back with you on my findings.
Now to kinda curve back around to my original question. Say I determine this is an R model. How would that relate to the early/late question on the shim tool? 
Regards,
TxGalz Dah |
Kghost
Senior Member
Username: kghost
Post Number: 1034
Registered: 07-2008
| | Posted on Wednesday, October 21, 2009 - 12:49 pm: |
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Here is a pic of what I am looking for.
Item 9
Also here is a pic of the bearing.
This one has 14 rollers in it ???
I am almost 100% sure you have a R or I drive. NOT a MR.....
 |
Kghost
Senior Member
Username: kghost
Post Number: 1035
Registered: 07-2008
| | Posted on Wednesday, October 21, 2009 - 12:57 pm: |
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As far as your question goes.
I can not answer it yet.
I need to wait until I get home from work and look at my manual.
I also downloaded the entire manual for the older models and will review that one also.
Also if you have no plans on taking the lower apart then DONT>
the cap is a very good identifier so we are dealing with a R not a MR.
Allthough the I and R may have the same cap I would suspect that parts may not be universal.
Remember we are dealing with 40 year old stuff and 40 plus ++ year old memory.......
With out the parts in hand it is difficult to know for sure on the old suff......
I started working on these things in the late eighties and even then there were not alot of older stuff hanging around. Plus the guy I worked for had been running a marine business for more than 20 years before I started to work for him so I had someone who knew the older stuff!! |
TxGalz Dah
Member
Username: txgalzdah
Post Number: 72
Registered: 09-2008
| | Posted on Wednesday, October 21, 2009 - 01:10 pm: |
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Kghost,
Roger that, standing by on tear down. Didnt really want to go there yet.
"the cap is a very good identifier", what part are you referring to? Is it listed in the drawing you posted? I ask because I got some boatswana time tonight. If the cap is something I could see from the bench I could take a look.
Regards,
TxGalz Dah |
Kghost
Senior Member
Username: kghost
Post Number: 1036
Registered: 07-2008
| | Posted on Wednesday, October 21, 2009 - 01:26 pm: |
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I know I should be working BUT!!
This is what I have found based on your year 1967.
I downloaded the merc service manual and will review it later.......
See below.
So we are looking at a I style drive not a R
One more thing
Is there a mechanical locking mechanismon the forward side of the outdrive. ( reverse lock out ) |
Kghost
Senior Member
Username: kghost
Post Number: 1037
Registered: 07-2008
| | Posted on Wednesday, October 21, 2009 - 01:42 pm: |
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OK here is what I have come up with so far as far as what tools.
Hope this helps........ |
Kghost
Senior Member
Username: kghost
Post Number: 1038
Registered: 07-2008
| | Posted on Wednesday, October 21, 2009 - 01:49 pm: |
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TxGalz Dah
Member
Username: txgalzdah
Post Number: 73
Registered: 09-2008
| | Posted on Wednesday, October 21, 2009 - 02:30 pm: |
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K,
You da man!!!!  Yes that is the cap on my out drive to a tee. So it looks like I have an I (india) type drive.
Now lets talk about the manual you down loaded. I have two manuals I downloaded after I purchased one that was online. They are close but this information is much closer. How can I put my hands on this info.
Kghost, many thanks. I'll hoist one in your name this evening.
Regards,
TxGalz Dah |
Kghost
Senior Member
Username: kghost
Post Number: 1040
Registered: 07-2008
| | Posted on Wednesday, October 21, 2009 - 04:15 pm: |
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Here is the link to a web page that has all the manuals
Scroll down, the first link is to a seperate page for quick downlaods.
Further down it lists all the amnuals bu they are big and take a long time to down load, Ask me how I know.
This is what you want.
Good luck
Page link:
http://forums.iboats.com/showthread.php?t=251571
Manual link ( big file):
http://www.4shared.com/file/11621716...MERCUISER.html |
Kghost
Senior Member
Username: kghost
Post Number: 1041
Registered: 07-2008
| | Posted on Wednesday, October 21, 2009 - 04:17 pm: |
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Try again....
http://www.4shared.com/file/116217161/a104ccd2/_MERCUISER.html |
TxGalz Dah
Member
Username: txgalzdah
Post Number: 74
Registered: 09-2008
| | Posted on Wednesday, October 21, 2009 - 09:29 pm: |
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Took almost two hours to down load but it was worth it. Thanks!
TxGalz Dah |
