TKA4791 High Performance Left Axle Shaft Assembly 1976-1977.5 F250 Dana 44

TKA4791 1976-1977.5 Ford F-250 High-Boy High-Performance Dana 44 Left Axle Shaft Assembly includes TK42302 Torque King® USA Made, fully-hardened Chrome-Moly Outer Axle Shaft, TK42304 Torque King® USA Made, fully-hardened Chrome-Moly Inner Axle Shaft, and TK40712 Torque King® Premium Non-Greaseable Axle U-Joint for all 1976-1977.5 Ford F250 Regular Cab Dana 44 4x4 Front Axles with Disc Brakes. Outer and Inner axle shafts are made from fully hardened, USA made forgings for maximum strength and durability. Universal joint assembled in USA of domestic and imported components.

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Dan the Gear Man® Tech Notes:
U-Joint Specs
Open, Closed Knuckles
1977 Model Change
Fits
Axle Shaft Failures
Inner Axle Seal Leaks
Matching Parts
Applications

Tech Note 1: U-Joint Specs
TKA4791 Axle Shaft Assembly uses TK40712 Non-Greaseable Universal Joints made to Spicer 1350WJ dimensional specifications. The cup diameter for these u-joints is 1-3/16". The 4 cups are grooved to accept Inside C-Clip Snap Rings. The installed Clips fit against the machined inner faces of the axle shaft yokes. The distance between the inside of the axle shaft yoke ears is 2-3/16".

Tech Note 2: Open, Closed Knuckles
Up through the 1975 model year, the 4x4 Ford F250 used closed knuckle, drum brake equipped front axles. Totally new, open knuckle, disc brake equipped axles were introduced for the 1976 model year. Very few hub, axle shaft, or steering parts are interchangeable between the two axle types.

Tech Note 3: 1977 Model Change
The Ford F250 underwent a major, mid-year model change in 1977 effective with serial number Y20001. Regular Cab F250 4x4s built before serial number Y20001 are "high boy" models with remote mount transfer cases and Dana 44 front axles with bolt-on type hub locks or drive flanges. 1977 regular cab 4x4s built after serial number Y20000 are "low boy" models with direct mount transfer cases and Dana 44 front axles with internal spline mount hub locks or drive gears.

Tech Note 4: Fits
TKA4791 only fits 1976-1977.5 regular cab F-250 trucks. Crew cab F250 models have a Dana 60 front axle.

Tech Note 5: Axle Shaft Failures
Axle shaft operating failures are usually a result of either a broken axle u-joint or a dry spindle bearing. Good preventative maintenance can usually prevent those type of failures. A good number of axle shafts are also wrecked by poor service procedures during u-joint replacement. Over the years I have seen a lot of axle shafts with bent or broken yokes caused by the slam-bang u-joint removal and installation methods. A QT1065M C-Frame Press with the correct adapters is both the safest and best way to remove or install axle u-joints.

Tech Note 6: Inner Axle Seal Leaks
Axle shaft seal leaks on older vehicles can occur any time an axle shaft is removed and replaced/reinstalled. The most common causes are the inner axle shaft seal lip has become worn and brittle with age and/or crud in the axle tube was pushed into the seal when the axle shaft was installed. The best thing to do is to replace the inner axle shaft seals before reassembling your axle, but you MUST remove the differential to replace the seals. With either new or old seals, always make sure the splines and seal surface on your inner axle shaft is clean and dry before installing the axle shaft.

Tech Note 7: Matching Parts
Matching Parts for TKA4791 Left Axle Shaft Assembly are:
TKA4792 Right Axle Shaft Assembly
QU40058 Axle Shaft Slinger
QU40228 Spindle Bearing and Seal Kit
QU40056 Small Spindle V-Seal
QU40070 Spindle Thrust Washer
QU40071 Large Spindle V-Seal
QK4734 Spindle Bearings
QU40032 Axle Shaft Snap Ring
QU40332 Front Spindle
QU95036 Lock Nut, Spindle to Steering Knuckle (use 5 per spindle)
QU40596 Solid Splined Drive Flange
QU40597 Hub Cap for Drive Flange
QU50818 Warn Manual Lockout Hub Set
QU40178 30 Spline Dana 44 Differential Inner Part and Gear Kit
QU40055 Inner Axle Oil Seal
QK4727 Round, 4 Slot Spindle Nut Kit for vehicles with solid drive gears or manual hubs
QT1025 4 Lug Spindle Nut Socket

Applications
Ford:
Regular Cab F-250: 1976
Regular Cab F250 before serial number Y20001: 1977