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willysmjeeps.com :: View topic - M38 Cuno filter leaks
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M38 Cuno filter leaks

 
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Rotorhead
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Joined: Jun 03, 2011
Posts: 28

PostPosted: Tue Jul 17, 2012 1:06 pm    Post subject: M38 Cuno filter leaks Reply with quote

I have the original style Cuno oil filter - unfortunately it's leaking from the T handle on top and at the bowl gasket. I could make a new gasket, but am wondering if there are any new ones being sold out there?? And as far as the T handle goes, can it be repaired or do I need a new head?? I've opened it up to clean it and it looks like the head assembly (with discs) is riveted together? Maybe I'm missing something. I don't want to remove the filter and install a modern throw-away style - but that may be the best option. Suggestions?
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dayboy42
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Joined: May 08, 2011
Posts: 98
Location: New England

PostPosted: Tue Jul 17, 2012 3:58 pm    Post subject: Reply with quote

Take a look around ebay... their are typically NOS cuno oil filter assemblies for sale cheap because most people want the canister style instead.

Any of the jeep suppliers have them like Army Jeep Parts or Midwest for cheap money.

good luck!
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wesk
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Joined: Apr 04, 2005
Posts: 16250
Location: Wisconsin

PostPosted: Tue Jul 17, 2012 11:14 pm    Post subject: Reply with quote

The Cuno filter has been with us since the 1920's. It is still installed as new equipment on OEM installation of a lot of hydraulic equipment. They are good filters and do a good job. Just as good as the military junior partial flow cannister system. You should be driving the jeep at least once a week unless it is in long term storage and pickled. You rotate the handle 360 deg once each week.

The bowl gasket can be tricky if you don't understand how it fits the lid.


The gasket (4) fits in the groove in the head (1) and the bowl (2) must have it's curved upper edge centered on the gasket. The backup plate (3) has enough give to let the bowl shift sideways enough for the lip of the bowl to get wedged under the metal edge of the head (1).
Also that nut on top under the "T" handle is called a packing nut and you must tighten it a little now and then to squash the seal enough to seal the stem of the "T" handle.


This is the gasket drawing.
_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
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Rotorhead
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Joined: Jun 03, 2011
Posts: 28

PostPosted: Sun Jul 29, 2012 7:48 pm    Post subject: M38 Cuno Filter Reply with quote

Thank you much! I'll fiddle with it tomorrow and see if I can get it right. Any idea whom might sell the gaskets??
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wesk
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Joined: Apr 04, 2005
Posts: 16250
Location: Wisconsin

PostPosted: Sun Jul 29, 2012 8:36 pm    Post subject: Reply with quote

Midwest Military sold the head assy's. They may have the gaskets.

Quote:

5330-00-351-4185 GASKET Index 5330-00-351-4188 GASKET

National Stock Number:
5330-00-351-4187

Federal Supply Class:
5330

National Item Identification Number:
003514187

Description:
GASKET

Detail:
A deformable material which prevents the passage of matter through the joint formed when two faces are joined. It may be metallic or nonmetallic, lubricated or impregnated, solid or hollow cross section. It may be made to any predetermined dimension and shape. Excludes flat disks, items made of felt material and items having joints. For round metal and plastic items with an aperture and a solid rectangular cross section, see WASHER, FLAT; SHIM; BEARING, WASHER, THRUST; and SPACER RING. Excludes DISK, VALVE; SEAL, NONMETALLIC ANGLE; SEAL, NONMETALLIC CHANNEL; SEAL, NONMETALLIC SPECIAL SHAPED SECTION; SHIELDING GASKET, ELECTRONIC; and RING, SEALING JAR.


Manufacturer Information:
118291 24617 GENERAL MOTORS CORP
118291 34623 AM GENERAL LLC
118291 7X677 GENERAL MOTORS LLC DBA GENERAL MOTORS
19932 73165 FEDERAL-MOGUL CORP FEL-PRO GASKET DIV
28649 15472 3M PURIFICATION INC.
7375059 19207 U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM


Techincal Specification:
MATERIAL DOCUMENT AND CLASSIFICATION IL-G-12803 +328148-4 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
APERTURE DIAMETER 2.125 INCHES NOMINAL
STYLE DESIGNATOR CIRCULAR
MATERIAL PAPER OVERALL AND GLUE OVERALL
OUTSIDE DIAMETER 2.562 INCHES NOMINAL
CROSS-SECTIONAL THICKNESS 0.094 INCHES NOMINAL
CROSS-SECTIONAL SHAPE STYLE SOLID SINGLE OR COMPOSITION

_________________
Wes K
45 MB, 51 M38, 54 M37, 66 M101A1, 60 CJ5, 76 DJ5D, 47Bantam T3-C & 5? M100

Mjeeps photo album: http://www.willysmjeeps.com/v2/modules.php?set_albumName=Wes-Knettle&op=modload&name=gallery&file=index&include=view_album.php
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