Ujoint housing caps
- Thread starter Brian SATX
- Start date
Brian SATX
Well-known member
WTSHNN- Thanks. That was my second choice. This came off a early 29 car.
johnbuckley
Well-known member
on this forum : https://www.fordbarn.com/forum/showthread.php?t=337056&highlight=universal and especially the pdfs in http://www.plucks329s.org/studies/studies_ujoint.html
Diastole
Senior Member
=> Holes of flange looks equidistance apart. (type 1, type 4, type 5)
Equal = 2 3/4" each
Unequal = starting at Lug: 3", 2 1/2", 2 3/4", 2 3/4", 2 1/2", 3"
=>No brake arm extensions. (type 3, type 4, type 5)
=> Unable to see zerk location.
Zerk on side (3 o'clock) (type 1, type 2)
Zerk at 4 or 8 o'cloclk (type 3, type 4, or type 5)
=> Lug is rounded not square and has no rib (Type 2, type 3, type 4)
=> Cannot see if there is a lower boss
T boss = type 1
D boss = type 2
No Boss = Type 3, type 4, or type 5
=> Flange thickness
Thick Flange 5/16" = (Type 3, type 4, or type 5)
Thin Flange 1/4" = (type 1 or type 2)
Based on the pics (I cannot see the lower boss location, zerk location, thickness of flange) without extension arms means type 4 or 5. Rounded Lug is 2, 3, or 4.
Thant means it is likely type 4. If holes are equally spaced 2 3/4" apart and there is no lower boss and the zerk is toward the 6 o'clock position and the flanges are 5/16"... you have a type 4 u joint housing
That means for a TYPE 4 U-Joint Housing assembly, you have a:
Style 4 U-Joint House Cap: A-4520-C
Style 4 Upper Housing: A-4514-B2
Style 4 Lower Housing: A-4514-B2
The Inner housing Cap will be a Style 3 A-4513-A
note well that "type" and "style" are not interchangeable
Diastole in the Smokies
Equal = 2 3/4" each
Unequal = starting at Lug: 3", 2 1/2", 2 3/4", 2 3/4", 2 1/2", 3"
=>No brake arm extensions. (type 3, type 4, type 5)
=> Unable to see zerk location.
Zerk on side (3 o'clock) (type 1, type 2)
Zerk at 4 or 8 o'cloclk (type 3, type 4, or type 5)
=> Lug is rounded not square and has no rib (Type 2, type 3, type 4)
=> Cannot see if there is a lower boss
T boss = type 1
D boss = type 2
No Boss = Type 3, type 4, or type 5
=> Flange thickness
Thick Flange 5/16" = (Type 3, type 4, or type 5)
Thin Flange 1/4" = (type 1 or type 2)
Based on the pics (I cannot see the lower boss location, zerk location, thickness of flange) without extension arms means type 4 or 5. Rounded Lug is 2, 3, or 4.
Thant means it is likely type 4. If holes are equally spaced 2 3/4" apart and there is no lower boss and the zerk is toward the 6 o'clock position and the flanges are 5/16"... you have a type 4 u joint housing
That means for a TYPE 4 U-Joint Housing assembly, you have a:
Style 4 U-Joint House Cap: A-4520-C
Style 4 Upper Housing: A-4514-B2
Style 4 Lower Housing: A-4514-B2
The Inner housing Cap will be a Style 3 A-4513-A
note well that "type" and "style" are not interchangeable
Diastole in the Smokies
Last edited:
Diastole
Senior Member
Gene,
In practicality all that really matters is the spacing of the flange bolt holes. This changes which inner cap is used. Because, the inner cap bolts between the outer housings. There are two Styles of inner caps, One with extra lubrication holes and the other without.
The spacing distances start at the frame lug on the upper housing and proceeds either clockwise or anti-clockwise, the direction matters not. It is a palindrome.
All of this is in the wonder article summarizing Steve Plucker’s comprehensive study.
Diastole
In practicality all that really matters is the spacing of the flange bolt holes. This changes which inner cap is used. Because, the inner cap bolts between the outer housings. There are two Styles of inner caps, One with extra lubrication holes and the other without.
The spacing distances start at the frame lug on the upper housing and proceeds either clockwise or anti-clockwise, the direction matters not. It is a palindrome.
All of this is in the wonder article summarizing Steve Plucker’s comprehensive study.
Diastole