QU40772 Greaseable 1310 x 1330 Series Unequal Length Cross U-Joint

QU40772 Greaseable 1310 x 1330 Series Unequal Length Cross Universal Joint is a very good quality USA made, hot-forged universal joint with flexible rubber seals for your vintage Ford. QU40772 is similar in construction and strength to your original rear u-joints making it a perfect match for your part time transfer case equipped 1959-1966 F100 or 1959-1975 F250 standard cab 4x4.

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Dan the Gear Man® Tech Notes:
U-Joint Specs
Other Applications
Verify
Alternative U-Joints
Tech Help
Grease
Matching Parts
Applications

Tech Note 1: U-Joint Specs
QU40772 is a external snap ring type, unequal length cross universal joint made to Spicer 1310 x 1330 series dimensional specifications. Cup diameter is 1-1/16". Installed width of short span is 3-7/32". Installed width of wide span is 3-5/8".

Tech Note 2: Other Applications
To the best of my knowledge, 1959-1966 F100 and 1959-1977.5 F250 4x4 trucks are the only production 4x4 vehicles that used a factory 1310 x 1330 u-joint. However, these special u-joints are often found in other vehicles that have been modified to adapt 1310 to 1330 components as part of a drivetrain conversion.

Tech Note 3: Verify
On most, but not all Ford driveshafts that use QU40772 u-joints, both ends of the driveshaft have 1310 series yokes and the transfer case and axle yokes are 1330 series. There are a couple of rear driveshaft and transmission to transfer case coupling shaft applications that use QU40784 1310 series u-joint on one end and QU40772 1310 x 1330 series on the other end. Before ordering, always verify what u-joints your truck has.

Tech Note 4: Alternative U-Joints
Over the years, I converted a lot of older Ford driveshafts from 1310 x 1330 to straight 1330. I am sure we were not the only shop doing that. If your vintage Ford was so modified, you need TK40721 or QU40774 u-joints which have cup diameters of 1-1/16" and an overall width is 3-5/8" for both spans.

Tech Note 5: Tech Help
More universal joints and driveshaft yokes are wrecked by slam-bang methods of u-joint replacement than by any other cause. Refer to TM3000 Driveshaft and Universal Joint Manual or TSB3502 External Snap Ring Single-Cardan U-Joint Service.

Tech Note 6: Grease
Service intervals for this greaseable universal joint will vary with your driving conditions and type of grease you use, but as a minimum, you should grease your u-joints with QU90018 Pyroplex® Plus Synthetic Grease or other quality, water resistant NLGI #2 GC-LB grease at every oil change or every three months which ever comes sooner. Lube more frequently in extremely wet conditions or after submersion under water. Remember, a greaseable joint that is not regularly lubed will prematurely fail from water contamination or grease loss.

Tech Note 7: Matching Parts
Matching Parts for QU40722 U-Joint:
QU40735 Strap and Bolt Kit
QU40768 U-Bolt Kit
QU40848 1330 Series 26 Spline Dana 30, Dana 44, Dana 50 Pinion Yoke (Strap and Bolt Style)
QU40509 1330 Series 29 Spline Dana 60 Pinion Yoke (Strap and Bolt Style)
QU40823 1330 Series 32 Spline NP205 Transfer Case Yoke (U-Bolt Type)
QU40785 6" Long x 16 Spline 1310 Series Slip Yoke
QU40753 6-7/8" x 16 Spline 1310 Series Slip Yoke
QU40927 8-7/8" Long x 16 Spline 1310 Series Slip Yoke
QU40746 1310 Series 32 Spline NP205 Transfer Case Yoke
QU90018 Pyroplex® Plus Synthetic Grease
For U-Joint Service Tools, See our U-Joint Tools Web Page

Applications
Ford:
F100 4x4 Front and Rear Driveshaft: 1959, 1960, 1961, 1962, 1963, 1964, 1965
F100 Some Rear Driveshaft, at transfer case end: 1966
F250 4x4 Front and Rear Drive Shaft: 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973
F-250 4x4 with NP205 Part Time Transfer Case Front and Rear Driveshaft: 1974, 1975, 1976, 1977.5
Also one end of SOME Transmission to Transfer Case Coupling (Jack) Shafts