IInnssttrruuccttiioonn SShheeeett FFoorr TTooooll ##778855
Rev C
8-13
No.785-IS
11
555 D wson Drive, C m rillo, CA 93012 Phone 805-482-6913 • F x 805-482-9224
A Division of Thiessen Products, Inc.
FFllyywwhheeeell RRuunnoouutt ((TTrruueenneessss)) IInnssppeeccttiioonn GGaauuggee,,
No. 785 Use on 1970 to present Big Twin Shovel, EVO, and Twin Cam
Ch ck flywh l runout with flywh ls in th ngin cas .
Ch ck th amount of g ar lash on g ar driv n cams us d in
som Twin Cam ngin s. All V-Twin flywh ls must b tru
wh n running within an ngin .
H-D S rvic Manual for non -Timk n b aring ngin s 2003
and up lists a s rvic w ar limit of .005”. This amount is
ch ck d in a truing stand. JIMS n w flywh l gaug has
b n d sign d to ch ck flywh l Runout of th Pinion shaft
(Crankshaft) whil ass mbl d in ngin cas . Engin s with
th l ft sid Timk n b aring (all JIMS ngin s hav Timk n
b arings) show a s rvic w ar limit of .003”. Wh n ch ck-
ing flywh ls install d in th ngin cas , th runout will b
gr at r than wh n ch ck d on a truing stand. Th b st way
to us this Runout gaug is with JIMS Tir Rotator Tool No.
936. By using a tir rotator you can r li v mor of th
str ss b ing appli d to th flywh ls than rotating th
ngin with th l ctric start r motor. This tool can also b
us d to ch ck cam g ar cl aranc (backlash) s b low for
mor information.
NOTE: PLEASE READ ALL INSTRUCTIONS COMPLETELY BEFORE PERFORMING ANY WORK!
IF YOU DO NOT KNOW WHAT YOU ARE DOING, DO NOT DO IT!
No information in this instruction sh t p rtaining to motorcycl r pair is r pr s nt d as foolproof or v n altog th r saf .
Ev n som thing saf , don incorr ctly or incompl t ly can and will backfir . You and only you ar r sponsibl for th saf -
ty of your r pair work and for you und rstanding th application and us of r pair quipm nt, compon nts, m thods
and conc pts. Each and v ry st p this tool is d sign d to do must b car fully and syst matically p rform d saf ly by
you. All information list d in this instruction sh t has b n t st d, r -t st d and us d daily in JIMS®R s arch and
D v lopm nt D partm nt.
ALWAYS WEAR SAFETY GLASSES OR OTHER FACE AND EYE PROTECTION SUCH AS FULL
FACE SHIELD. JIMS®IS NOT RESPONSIBLE FOR DAMAGE, INJURY, OR YOUR WORK. JIMS®
IS NOT RESPONSIBLE FOR THE QUALITY AND SAFETY OF YOUR WORK.
PARTS AVAILABLE SEPARATELY
No. Qty. D scription Part No.
11 INDICATING PLATE 785-1
21 1" DIAL INDICATOR .001 RESOLUTION 940-4
3 2 THUMBSCREW, 1/4-20 X 1-1/2" 1391
41 THUMBSCREW, 10-32 X 1/2" 1392
51 SPACER, 1/4" X 1/2" X 1" 1085
61 SCREW, 1/4-20 X 1-3/4" 1122
7 1 INSTRUCTION SHEET 785-IS
FIG 1
