Jims 1820 User Manual download pdf

Use with JIMS new No.1043 Twin Cam Tappet Cover when using any stock to mild lift cams.

NOTE: Hydrosolid

II must be adjusted as a solid lifter in a cold motor only. If you are

unfamiliar with solid lifter adjustment, seek professional help. Otherwise serious engine

valve train damage will result.

NOTE: The JIMS Hydrosolid

II tappet includes design parameters that may or may not

affect your oil pressure. These performance tappets incorporate an “oil hole” to feed the

tappet roller, axle and cam assembly. In test, JIMS has seen a slight drop in oil pressure

ranging from 0-3 lbs psi. It is up to you, the mechanic, to confirm adequate oil pressure

before and after installing these tappets.

CAUTION: Disconnect the ground cable at the battery.

1. Refer to H-D

Service Manual for tappet installation. If installing a cam and

tappet blocks at the same time follow those manufacturers’ instructions.

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Rev A

9-08

No.1820-IS

555 Dawson Drive, Camarillo, CA 93012 Phone 805-482-6913 • Fax 805-482-7422

HYDROSOLID

™

II TAPPET

Note: As you are preparing the engine for the installation of the new Hydrosolid

II, place

all 4 tappets in a clean container (plastic bag) filled with clean H-D

20W50 oil to cover

tappets, let them set for 20 minutes.

2. Place the front piston at TDC compression position.

3. With all four Hydrosolid

II Tappets installed, start with the front intake pushrod

making sure tappet is at the lowest point on the cam.

4. Extend the pushrod adjuster screw to zero lash, you will be making the pushrod

longer (no up and down movement, removing all free play without pushing the

hydraulic unit down). See pushrod adjustment chart for your particular pushrod.

Example: If your pushrods have 24 threads per inch extend pushrod 5 hex wrench flats.

Note: This will move the adjusting screw down, pushing the hydraulic unit down it’s bore

.0345”, this will put the hydraulic unit about .014” from the floor of tappet. What we are

looking for is the hydraulic unit resting on the floor of the tappet.

(This is just a starting point, the adjuster screw may need to be extended or shortened if

the adjusting screw was either adjusted too far or not enough.)

This adjustment will bleed the Hydrosolid

II Tappet, which may take 5-15 minutes or

longer to bleed off oil pressure. What we're looking for is a pushrod that just barely turns

with your fingers. If after 15 minutes, if the pushrod still turns easily, (with your thumb and

forefinger) extend the pushrod until you can just barely turn pushrod with your fingers. If

you can barely turn the pushrods with your fingers and the Hydrosolid

II’s are at the

lowest point on the cam, then they have been adjusted properly.

CAUTION: If you cannot turn pushrod with your fingers DO NOT rotate engine.

No.1820 - Use on all Twin Cams

1999-present,

also Sportster

and Buell

2000-present.

tandard O.D. is .8420”.

No.1821 - +.001” Oversize.

No.1822 - +.0015” Oversize.

This Tappet Replaces and Surpasses JIMS

No.1802

Hydrosolid

NOTE: FOR USE ON ADJUSTABLE PUSH RODS ONLY.