Jims Catalogue

POWERGLIDE ™ TAPPET INFORMATION

HYDRAULIC TAPPET ADJUSTMENT Install tappets per H-D ® Service Manual. • If the pushrods you are using are adjustable, proceed as follows: • With the Powerglide ™ tappet installed, start with the front tappet at the lowest point on the cam and extend the pushrod to zero lash (no up and down play, but has a light spin). • Extend the pushrod adjuster 15 wrench flats if pushrods have 24 threads per inch, 17 wrench flats if pushrods have 28 threads per inch, 18 wrench flats if pushrods have 32 threads per inch, 21 wrench flats if pushrods have 36 threads per inch, 24 wrench flats if pushrods have 40 threads per inch and 30

wrench flats if pushrod has 52 threads per inch. Tighten lock nut. NOTE: Popular pushrod adjustments below. Refer to individual lifter instruction sheet for adjust- ment information. PUSHROD ADJUSTMENTS-FOR REFERENCE ONLY! NOTE: Use the instructions that came with your tappets Threads Wrench Total travel Distance Distance per inch flats distance per turn per flats 24 15 .1042” .0417” .0069” 28 17 .1011” .0357” .0059” 32 18 .0937” .0313” .0052” 36 21 .0965” .0275” .0045” 40 24 .100” .025” .0042” 52 30 .0962” .0192” .0032”

POPULAR PUSHRODS MANUFACTURES THREADS PER INCH JIMS ® Pro-lite 24 No.s 2380, 2400 Slim JIMS 32 No.s 2404, 2369 Andrews 28 Andrews 32 Crane 28 New Time Savers Crane 24 Old Time Savers Crane 32 H-D ® 32 S&S ® 32 Screamin Egl. 32 Rivera 40 Taper Lite Rev Tech 36

9

IMPORTANT NOTE: This adjustment will make the pushrod tight, which will bleed the hydraulic lifter. It can take 5-15 minutes, or longer, to bleed off. It is very important that the engine is not rotated while pushrods are tight. The pushrod will spin with your fingers after the tappet has bled off. • Recheck lock nut, close covers and install clips. • Repeat exact procedure on rear set. • Turn motor over several times until oil pumps into the Powerglide ™ tappets, and the oil light goes out, or until oil is returning to the oil tank. • These tappets will work best in JIMS ® Tappet Blocks with a running clearance of .0007” to .0012”. • JIMS ® Powerglide ™ Tappets can also be run in H-D ® blocks, with excellent performance results. • JIMS ® Powerglide ™ Tappets are assembled with a small amount of oil to ease in the adjustment. FOUR POSSIBLE REASONS THAT MAY KEEP NEW HYDRAULIC UNITS FROM WORKING PROPERLY IMPROPER FIT • MECHANICAL • CONTAMINATION OF OIL SUPPLY • LOW OIL SUPPLY 1. IMPROPER FIT a) Not likely, each unit goes through two separate dimensional tests. The fit is checked twice, to with- in .00015” to .0002”. b) Second, a hydraulic bleed down test is performed dry, then with 5 weight oil. 2. MECHANICAL a) Not adjusted properly. Re-adjust per tappet instruction sheet. For tappet No’s. 2456-1 and 2459- 1, the hydraulic unit itself needs to be at .100” ± .010” below snap ring. For No.1029-53B tappet and block kit, the hydraulic unit itself needs to be .050” ± .010” below the snap ring. Some Shovel models from 1978-80 have tappet blocks with oil drain holes positioned too low. If running a SEE JIMSUSA.COM FOR DETAILED INSTRUCTIONS

48