HESCO Supercharger installation instructions for a 1993 ZJ (Grand Cherokee)
Version 1.2 - November 11, 1998
Note These instructions are derived from the original HESCO instructions. They have been modified by me based on the problems I have encountered in the installation process. Even that does not guarantee I didnít miss something. Read both sets, it canít hurt. Douglas W. Wilson.

THINGS YOU WILL NEED!

Jeep Service Manual (for torque specs etc.)
Torque Wrench (for the pulley, and other bolts)
Deep well 10mm for the throttle body
Small set of wrenches for the casting
Set of allen keys for the casting
5/16 hex drive for the superchargers bolts
T-50 Torx bit if you have to take the seatbelts off to run the boost-a-pump
Bottle of power steering fluid
¼ inch plastic vacuum T fitting
¼ inch plastic vacuum splice
A few nice days, an understanding friend , and a spare vehicle just in caseÖ J
 

TEAR DOWN:

CAUTION

GASOLINE IS HAZARDOUS, WEAR EYE PROTECTION AND NEVER WORK ON A HOT ENGINE OR AROUND FIRE OR FLAME. THE FUEL IN THE ZJ IS UNDER PRESSURE ALL THE TIME)

ASSEMBLY:
TEST FIT THE SUPERCHARER!
Mark where it aligns
then come back here and follow the directions with the anaerobic sealer.
NOTE:

If the throttle plate is open a bit then your supercharger isnít forward enough. Loosen the bolts under the supercharger and the set screw and slide it forward if possible.

MARK where everything aligns, go back to step 10 and use the anaerobic sealer.
TEST:


SERVICE:

Service the compressor with MOBILE 1 oil at 12,000 mile intervals. Add oil as required.
Check oil when you check your motor oil (every 3,000 miles is a good idea)
The supercharger only takes 6 ounces of oil (DONíT OVERFILL IT OR YOUíLL KILL IT)

To drain, Remove the upper 1/8" pipe plug, then the lower 1/8" pipe plug.
To fill, Replace the lower plug and add 6 ounces of oil then replace the upper plug.
There is a dipstick on the compressor. (Itís under the little black knob on the top)