JIMS 1824 Instruction Sheet

No.1824-IS
I I n n s s t t r r u u c c t t i i o o n n S S h h e e e e t t f f o o r r J J I I M M S S N N o o . . s s 1 1 8 8 2 2 4 4 , , 1 1 8 8 2 2 5 5 , , a a n n d d 1 1 8 8 2 2 6 6
JIMS Steady Roll Tappet is designed with a special bronze alloy
bushing instead of needle bearings in the tappet's roller and
uses our proven Powerglide II hydraulic unit and fitments.
Standard O.D. is .8425" Fits Evo Big Twin 1984-present,
Sportster 1986-1990, Buell 1987-1990
No. 1824 STD
No. 1825 +.002"
No. 1826 +.005"
RE D LL INSTRUCTIONS BEFORE ST RTING JOB.
CAUTION: Disconnect the ground cable at the battery.
Note: As you are preparing the engine for the installation of the new JIMS
Steady Roll tappets, place all 4 tappets in a clean container filled with H-D
20W/50 oil to cover tappets, let them soak for 20 minutes.
Install tappets per H-D Service Manual and running specifications
1. These tappets will work best in JIMS Tappet Blocks No. 1094 with a running clearance of
.0007" to .0012". Use JIMS No. 33443-84 Tappet Block Alignment Tool.
2. JIMS Steady Roll Tappet can also be run in H-D blocks with a running clearance of .0007"-.0012".
3. JIMS Steady Roll Tappets are assembled with a small amount of oil to ease in the adjustment.
4. If the pushrods you are using are adjustable, proceed as follows.
5. With the Steady Roll Tappet installed, start with the front tappet at the lowest point on the cam,
extend the pushrod to zero lash (no up and down play, but has a light spin.)
6. Extend the pushrod adjuster 15 wrench flats if the pushrod has 24 threads per inch. Follow specifi-
cations supplied with the pushrods used. Tighten lock nut. Repeat this procedure for the intake
pushrod.
Note: Popular pushrod adjustments listed below.
Important Note: This adjustment will make the pushrod tight, which will bleed down the hydraulic
lifter. It can take 5-15 minutes to bleed off completely.
Caution: It is very important that the engine is not rotated while the pushrods are tight. The pushrod will spin
with your thumb and forefinger after the tappet has bled off.
7. Check for proper adjustment with JIMS No. 746 Tappet Adjustment Tool. The goal is to depress the
hydraulic plunger .100" below the retaining ring and pushrod seat.
8. Re-check lock nuts, close covers, and install clips. Use JIMS No. 917 pushrod clip installation &
removal tool.
9. Repeat exact procedure on rear cylinder pushrods making sure you are on the lowest part of the cam
lobe.
10.Turn engine over several times to pump oil into the Steady Roll Tappet or until the oil light goes out,
or oil is returning to the oil tank.
CAUTION: Use 20W/50 Motor Oil and Clean the Tappet Screen
For detailed hydraulic lifter and troubleshooting information see "Powerglide Tappet Information". Refer
to JIMS catalog tappet section, or website catalog at www.jimsusa.com
555 Dawson Drive, Camarillo, CA 93012 Phone 805-482-6913 • Fax 805-482-9224
Division of Thiessen Products, Inc.
S S t t e e a a d d y y R R o o l l l l T T a a p p p p e e t t s s
Visit us on the web at WWW.JIMSUSA.COM
Rev N/C
6-15
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