Create an account Home  ·  ·  Forums  ·  ·  Articles  ·  ·  Downloads  ·  ·  Photo Gallery  
Login
Nickname

Password

Don't have an account yet? You can create one here.

Navigation
· Home
· Article Archive
· Article Submit
· Downloads
· FAQ
· Forums
· Members List
· Photo Gallery
· Private Messages
· Web Links
· Your Account

Search Articles



Forums

YS 637s rebuild kits
M38 waterproof venting
My 38 project for sale possibly?
m38a1 pintle
Minimum brake drum thickness M38
1953 A1 Grille/Radiator Rubber Mount
WINDSHIELD GLASS STENCIL
Brake Question M38 52
Photo Gallery Request!
Grote side reflectors on M38 June 1952

Willys M Jeeps Forums


willysmjeeps.com :: View topic - speedometer cable leak, transfer case leak
 Forum FAQForum FAQ   SearchSearch   UsergroupsUsergroups   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

speedometer cable leak, transfer case leak

 
Post new topic   Reply to topic    willysmjeeps.com Forum Index -> Technical Knowledge Base
View previous topic :: View next topic  
Author Message
rgmutchler
Member


Joined: Sep 28, 2008
Posts: 269
Location: Caldwell, Texas

PostPosted: Fri Jun 26, 2020 10:03 am    Post subject: speedometer cable leak, transfer case leak Reply with quote

I have been trying to get my M38 road worthy but have had a constant, pretty heavy transfer case leak. Initially it was coming from the rear transfer case cover and I seem to have fixed that by taking a slight bow out of the cover and replacing the gasket and sealant.
The leak continued although not as bad but still a pretty good puddle and it was oriented more to the right side than the center as it had been. I could find no signs of leak except at the rear and finally decided that I needed to redo the rear cap and shims etc.
This morning I pulled the parking brake assembly and there was no sign of leakage around the seal or the splines on the yoke and I didn't see anything obvious around the cap. When I took off the speedometer cable I noticed oil on the inside lower frame rail. After removing the cable I noticed transmission oil leaking out of it from a slight cut in the outer shielding.

I guess my question is, does enough transmission fluid get forced through the cable to cause a fairly noticeable leak?

I also looked in the ord-9 and noticed a listing for gaskets for both ends of the speedometer cable

7539688 GASKET, ru, 41/64 ID, 57/64 ; OD, 9/64 thk, speedometer
shaft, drive end

7539689 GASKET, ru, flexible shaft, 15/32 ID, 41/64 OD, 1/16 thk,
speedometer shaft, head end

From the description I would guess that they are o rings that go up in the nut that holds the cable at each end.

I plan on finishing removing the rear cap. recheck the end play and re seal the shims and bolts but I wonder if enough fluid could get pumped out the speedometer cable because of the lack of gaskets and the hole in the shielding to cause a moderate type leak.
_________________
R G Mutchler
M274A5
M-38 MC13312
http://willysmjeeps.com/v2/modules.php?set_albumName=rgmutchler&op=modload&name=gallery&file=index&include=view_album.php
Back to top
View user's profile Send private message Send e-mail
charlesfitton
Member


Joined: Jun 07, 2010
Posts: 66
Location: Maryhill On

PostPosted: Mon Jun 29, 2020 4:58 am    Post subject: Reply with quote

Did you check to see if the tranni and TCase are vented properly?
_________________
M38 CDN 52-30105
M38 CDN 52-30883

and other green crap...
Back to top
View user's profile Send private message
wesk
Site Administrator
Site Administrator


Joined: Apr 04, 2005
Posts: 14917
Location: Wisconsin

PostPosted: Mon Jun 29, 2020 10:13 am    Post subject: Reply with quote

RG, They are flat rubber washers or gaskets. The sheath nuts require no sealing. Those flat rubber washers seal the sheath tube flared end inside the cap with the threaded boss on the transfer case and the back of the speedometer, Here's their detailed spec's.

Quote:
Flat Washer NSN 5310-00-753-9688 | NIIN 00-753-9688
https://nationalstocknumber.org/nsn/5310-00-753-9688
NSN: 5310-00-753-9688
Features and Characteristics
Cross Sectional Shape - Rectangular
Hole Diameter - Between 0.625 inches and 0.641 inches
Edge Shape - Round
Center Hole Shape - Round
Thickness - 0.141 inches
Overall Diameter - 0.891 inches
Min. Tensile Strength (psi) - 1500 pounds per square inch
Hardness Rating - Between 55.0 shore barometer a and 65.0 shore barometer a
Material - Rubber synthetic
Material Specification - 417 grade sc 615ABEF military standard single material response
FSC - 5310 Nuts And Washers
NIIN - 007539688
NSN 5310007539688

Manufacturer Part Numbers
Alternate part numbers that match this National Stock Number
Part Number Cage Status MSDS
7539688 19207 A
118443 7X677 A
1568220 7X677 A
7539688 T0720 A
1568220 72582 A
1568220 70040 A
482N1 56442 A
PC1568220 C7432 A
118443 24617 A
1568220 24617 A
5310007539688 SCY13 A
7539688 A9271 A




Q & A
Frequently asked questions for NSN 5310-00-753-9688
What are the manufacturers of nsn 5310007539688?

U S Army Tank Automotive Command (19207)
General Motors Llc (7X677)
Fnss Savunma Sistemleri A.s. (T0720)
Mtu America Inc. (72582)
General Motors Corp (70040)
Diamond Reo Truck Co (56442)
Power Components (deutschland) Gmbh (C7432)
General Motors Corp (24617)
E.c.a Etablissement (SCY13)
Goriziane Group Spa (A9271)

Does this nsn 5310007539688 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310007539688
A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. the hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). the thickness cannot exceed 25 percent of the largest outside dimension. when the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. the maximum tolerance is applied to dimensions and used as a determining factor. items with separable lamination use shim. for items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. excludes disk, valve, graphite impregnated and lubricated items.
Does nsn 5310007539688 contain any precious metals?
Precious metal content is unknown.
Does nsn 5310007539688 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310007539688?
No known electrostatic discharge.


_________________________________________________________


Quote:
Gasket NSN 5330-00-753-9689 | NIIN 00-753-9689
https://nationalstocknumber.org/nsn/5330-00-753-9689
NSN: 5330-00-753-9689
Features and Characteristics
Cross Sectional Shape - Solid single or composition
Outside Diameter - 0.641 inches
Aperture Diameter - 0.469 inches
Cross-sectional Thickness - 0.062 inches
Material - Rubber synthetic
Style Designator - Circular
FSC - 5330 Packing And Gasket Materials
NIIN - 007539689
NSN 5330007539689

Manufacturer Part Numbers
Alternate part numbers that match this National Stock Number
Part Number Cage Status MSDS
7539689 19207 A
118444 7X677 A
1568362 7X677 A
15683626 7X677 A
7539689 T0720 A
118444 24617 A
1568362 24617 A
15683626 70040 A
5330007539689 SCY13 A

Q & A
Frequently asked questions for NSN 5330-00-753-9689
What are the manufacturers of nsn 5330007539689?

U S Army Tank Automotive Command (19207)
General Motors Llc (7X677)
Fnss Savunma Sistemleri A.s. (T0720)
General Motors Corp (24617)
General Motors Corp (70040)
E.c.a Etablissement (SCY13)

Does this nsn 5330007539689 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5330007539689
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.
Does nsn 5330007539689 contain any precious metals?
Precious metal content is unknown.
Does nsn 5330007539689 contain any hazardous materials?
No information in HMIRS. Hazardous material unknown.
What is the ESD classification of nsn 5330007539689?
No known electrostatic discharge.



_________________
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
Back to top
View user's profile Send private message Send e-mail Visit poster's website
rgmutchler
Member


Joined: Sep 28, 2008
Posts: 269
Location: Caldwell, Texas

PostPosted: Mon Jun 29, 2020 5:17 pm    Post subject: Reply with quote

Charlesfitton,
I checked the vent before I pulled it apart but I am going to pull it again and re-check it. I have purchased a new speedometer cable and housing to install.

Wes.
Thanks. I think your decimal measurements work out to the fractional ones in the manual. My old cable housing had them but they didn't look real good which is why I looked them up. I pulled one out of the new cable housing and observed that it is not an o-ring but a washer. Thanks for looking up the additional info.
I have a new bearing cap due to damage on the old one and the new cable and housing and hope this stuff will fix my leak issues.
Ralph
_________________
R G Mutchler
M274A5
M-38 MC13312
http://willysmjeeps.com/v2/modules.php?set_albumName=rgmutchler&op=modload&name=gallery&file=index&include=view_album.php
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic    willysmjeeps.com Forum Index -> Technical Knowledge Base All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Powered by phpBB © 2001 phpBB Group
Forums ©

 



PHP-Nuke Copyright © 2005 by Francisco Burzi. This is free software, and you may redistribute it under the GPL. PHP-Nuke comes with absolutely no warranty, for details, see the license.