COMPRESSION=14" TO 15 1/2"EXTENSION=21" TO 22 1/2"ACCEPTS 7" TO 13" SPRINGSLIGHTWEIGHT STEEL CONSTRUCTIONDETENT ACME NUT FOR QUICK ADJUSTMENT, CAN BE ADJUSTED BY WRENCH, OR BY HAND, WHEN CAR IS JACKED UPHAS INTERNAL STOP SO UNIT CANNOT SEPERATE WHEN CAR IS JACKED UPMAIN SHAFT SEAL TO KEEP DIRT OUTSPACERS INCLUDED TO LENGTHEN UNIT
MAINTENANCE INSTRUCTIONS: THIS UNIT HAS SOME CLOSE TOLERANCE PARTS AND NEEDS TO BE DISASSEMBLED, CLEANED THROUGHOUT, INSPECTED, AND REASSEMBLED EVERY 4 TO 6 RACE NIGHTS (DEPENDING ON CONDITIONS). ASSEMBLE WITH ANTI-SEIZE ON THE PISTON AND LIGHT OIL ON ROD. REMOVE BOLT AND WASHER FROM MAIN BODY AND FILL WITH GREASE USING GREASE FITTING UNTIL GREASE COMES OUT BOLT HOLE. REPLACE BOLT AND WASHER AND REINSTALL.