Product Description
Fits: ZF3HP22 / ZF4HP22 · 1976-1999
Alto forward clutch "A" PowerPack for ZF3HP22 and ZF4HP22 transmissions, 1976-1999. Made in the USA. Specially sized .059 in steels convert the original 5 friction plate pack to take 6 of Alto's High Energy friction plates, which hold better under load, even behind high-performance turbocharged engines.
Specifications
| Fits | ZF3HP22, ZF4HP22 |
|---|---|
| Years | 1976-1999 |
| Manufacturer part number | Alto Products Corp 053755 |
| Clutch pack clearance | .020” - .025” |
Directions
Install one original waved cushion plate, then a .059 in steel into the aluminum carrier, then a friction plate. Continue until the pack has 6 frictions and 7 steels in total. Install the other original waved cushion plate on top of the last steel. Install the clutch drum onto the carrier, fit the perimeter snap ring and air check the pack several times to seat everything.
For reducing or correcting forward engagement delay, the target clearance is .020 in - .025 in. If clearance is greater, remove one .059 in steel, install the furnished .071 in standard steel and recheck. If it still is not .020 in - .025 in, the drum or plate carrier is misassembled or the wave plates have lost height. Measure each wave plate on a flat surface from the surface to the top of the waved peaks: heights should average .063 in - .070 in, and any plate below .060 in should be replaced.
Clutch A is a static clutch applied in all forward speeds, so the .020 in - .025 in clearance has no adverse side effects or durability concerns. The kit has been field tested in several applications. Presoak the frictions in clean ATF for at least 30-45 minutes to avoid surface glazing and early distress.
What's included
- (6) 053700K (.061” / 1.55mm) High Energy friction plates
- (7) 053711 (.059” / 1.50mm) steel plates
- (1) 053701 (.071” / 1.80mm) standard steel plate
Notes
Air check the clutch pack several times to seat all the components.
With the wave plates on a flat work surface measure the heights from the flat work surface to the top of each of the waved peaks.
The clearance of .020” - .025” does not generate any adverse side effects or durability concerns.
