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1937 115C mechanical refresh
#1
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Larry Reber
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Moving my project to this part of the forum.
Started a month ago to do the mechanical refresh on my 1937 115c. The previous owner had replaced the radiator, waterpump, brakes, shocks, gas tank.

It is now time to do the Trans and engine, and with some additional thought.. rear wheel bearings and pinion seal.

I'll repost a couple of shots and add new as it goes..

QUESTION
What are the markings on the piston,
"C" is standard but the 6 aand grouped II are a mistery to me

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Posted on: 2019/2/27 0:41
Larry Reber
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Re: 1937 115C mechanical refresh
#2
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Larry Reber
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Pictures of the engine. The engine shows that this is the first time being opened. Cylinders do not show any scoring but are "wellpolished".The cam has an interesting wear pattern, timing chain is being replaced.

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Posted on: 2019/2/27 0:52
Larry Reber
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Re: 1937 115C mechanical refresh
#3
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Larry Reber
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Found tihs little jewel when pulling the engine, As I disconnected the clutch push arm it seperated from the fork just in front of the adjustment nuts.
After closer inspection it appears that the arm broke many years ago and formed its ball and socket joint.

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Posted on: 2019/2/27 0:59
Larry Reber
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Re: 1937 115C mechanical refresh
#4
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Owen_Dyneto
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Is the piston an autothermic strut controlled expansion type?

Is a maker's name or trade name cast on the underside of the head, for example "Bohnalite"?

If it's a factory piston the "C" indicates a 0.001" oversize beyond the standard size or a marked oversize. If a nominal oversize is indicated like "0.010" or "0.020", then the "C" indicates a 0.001" oversize over that size. If none is marked, then it's 0.001" over the standard size. See the shop manual for more details.

Posted on: 2019/2/27 10:17
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Re: 1937 115C mechanical refresh
#5
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Larry Reber
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THANKS
Found this info for a series 16 dated 6-1-38
service bulliten
SL-VOL12NO11.pdf

Attach file:


pdf Size: 2,682.52 KB; Hits: 31

Posted on: 2019/2/27 11:53
Larry Reber
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Re: 1937 115C mechanical refresh
#6
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Larry Reber
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Not sure what a automatic expansion expansion. My Pistions have a slot in the skirt up to the ring head area.

Posted on: 2019/2/27 11:55
Larry Reber
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Re: 1937 115C mechanical refresh
#7
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Larry Reber
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Here's one for discussion.

Looking at the service bullitins
" Oil Filter Tubes- 1800-1803"

I have identified several plugs in the 37 6cyl block oil passages.

Has anyone added a oil filter assy to the 37 6 ?
If so how did you do it.

Posted on: 2019/2/27 12:27
Larry Reber
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Re: 1937 115C mechanical refresh
#8
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Owen_Dyneto
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That Service Letter is a pretty busy page, here's more concise information from the 1937 Packard 115C (Six) shop manual.

Since your piston has a letter code for fit, it is probably a factory autothermic strut type piston for controlled expansion. A photo of the internals would confirm.

Attach file:



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Posted on: 2019/2/27 12:32
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Re: 1937 115C mechanical refresh
#9
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Larry Reber
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THANKS. I need to find a copy of that manual.

Posted on: 2019/2/27 12:43
Larry Reber
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Re: 1937 115C mechanical refresh
#10
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Owen_Dyneto
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If you want a hardcopy of it, it's available from The Packard Club.

https://www.packardclub.org/store/inde ... 3tpq2ngv0rjm0agpcp59st7v0

Posted on: 2019/2/27 12:46
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