Product Description
ZF4HP22 Transmission Clutch "E" Drum Saver Powerpack
Made in the USA by Alto Products Corp
The thicker steel core of the enclosed clutch “F” friction plates allows the reuse of a worn splined clutch “E” drum. The kit offers the same extended durability to avoid a potential comeback or rework even when a NEW clutch “E” drum is installed. It is excellent insurance for your quality rebuild.
What are the reasons to install this kit?
When a ZF4 series transmission shifts into 4th gear, clutch pack element “F” applies, which then allows the rear planetary section to lift and rotate. During the time that the elements are applied, vibratory resonance from the TCC tends to rock clutch drum “E” back and forth slightly but with considerable force. With diesel equipped vehicles, the engine pulses tend to aggravate the condition even more. As the friction plate teeth on clutch “F” rock back and forth with this motion, the teeth begin a peening effect on the splines of the clutch “E” drum. The steel cores of the enclosed friction plates are .060” thick versus the .035” of the original thickness steel cores. The additional .025” of material is almost double the amount of total tooth contact area. The additional .025” thickness also spreads the energy of the apply over more surface area. The illustration below shows the area to check for clutch drum “E” spline wear.
Contents
- (4) 053706-225 (.089” / 2.25mm) Thick Core Clutch “F” Friction Plates
- (4) 053705 (.059” / 1.50mm) Steel Plates
- (1) 053707 (.083” / 2.10mm) Standard Steel Plate
ALTO PRODUCT CORP # 053758
