JIMS 785 User manual

IInnssttrruuccttiioonn SShheeeett FFoorr TTooooll ##778855
Rev C
8-13
No.785-IS
11
555 D wson Drive, C m rillo, CA 93012 Phone [phone] • 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
1
3
3
2
4
5
6
FIG 1

CAUTION: We r s fety gl sses over your eyes.
See JIMS®c t log for Hundreds of top qu lity profession l tools.
The l st tools you will ever need to buy.
IInnssttrruuccttiioonn SShheeeett FFoorr TTooooll ##778855
Rev C
8-13
No.785-IS
22
555 D wson Drive, C m rillo, CA 93012 Phone [phone] • F x 805-482-9224
A Division of Thiessen Products, Inc.
P rform all work p r H-D® s rvic manual for appropriat y ar and mod l for th motorcycl you will b r pair-
ing. S JIMS® catalog for a compl t listing of all ngin and transmission tools.
JIMS Tools r comm nd d for p rforming this s rvic :
No. 936, JIMS Tir rotator for as of rotating ngin by hand
No. 994 or No. 1285 Cam lock tool, s catalog for y ar applications.
No. 1283 Cam chain tool s catalog for y ar applications.
No. 33443-84 Twin Cam oil pimp alignm nt scr w (Qty. 2)
OTHER TOOLS RECOMMENDED FOR USE WITH THIS TOOL:
1 - 3/16" All n wr nch or All n sock t
1- Saf ty glass s
1 - H-D S rvic Manual
• R quir d hand tools n d d for th r moval of cam cov r and cam support.
• Manufactur rs sp cifications for g ar driv n cams.
Warning: Disconnect the negative ground cable at the battery or Maxi fuse as indicated in service manual.
Note: Follow your service manual for the removal of cam chest components needed to gain access to the end of
Pinion shaft (Crankshaft for use of this tool.
Assembly of tool for checking Flywheel run out on all Twin cams, EVO, and Shovels 1970 to 1984
1. Apply a small amount of cl an oil or lub to th thr ads of thumbscr w No.1392. Plac th mounting nd
of indicator No. 940 4 all th way into th bor at th top of indicator plat No.785 1. Position th indica-
tor’s fac to b on th sam sid as th Las r ngraving of plat . Just fing r tight n th thumbscr w No.1392
so th indicator will not mov .
See Fig 1.
2. Apply a small amount of cl an oil or lub to th thr ads of both thumb- scr ws No.1391. Plac th abov
ass mbly up to th cam cov r gask t surfac of right cas . Th n, d p nding on th y ar of ngin you will
b ch cking, install both thumbscr ws No.1391 through th las r mark d hol s and thr ad into th cas .
Th location of mounting scr ws is d t rmin d by th y ar and mod l as indicat d by th las r marking on
th outsid fac of th indicator plat . If th application is Twin Cam, install both thumbscr ws through th s
hol s and if th application is EVO or Shov l install both thumbscr ws through th s hol s. See Fig 1.
Caution: As you plac indicator plat No.785 1 ov r Pinion shaft using your fing r tip, lift indicator rod up and
ov r Pinion shaft.
3. On th right sid of indicator (about th 2:00 O-clock position) is th fac dial lock scr w. Loos n it and you
can turn th fac to locat th “O” (Z ro) at th indicating n dl . R tight n th lock scr w.
4. R mov th spark plugs and plac th transmission in high g ar. Position th r ar wh l off th ground and
plac on stand No. 936. You can rotat th ngin whil noting th amount of runout as shown on th dial
indicator.

CAUTION: We r s fety gl sses over your eyes.
See JIMS®c t log for Hundreds of top qu lity profession l tools.
The l st tools you will ever need to buy.
IInnssttrruuccttiioonn SShheeeett FFoorr TTooooll ##778855
Rev C
8-13
No.785-IS
33
555 D wson Drive, C m rillo, CA 93012 Phone [phone] • F x 805-482-9224
A Division of Thiessen Products, Inc.
.
Note: Please refer to your service manual for the amount of allow-
able flywheel run out. If your flywheels are running out more
than the allowed amount, see JIMS catalog for the tools
required for flywheel removal. If your flywheels are in need of
service, JIMS can rebuild or supply you with a new set of fly-
wheels, contact JIMS at 805-482-6913 or www.jimsusa.com
for application and availability.
Checking Gear drive cams for gear lash
Note: It will be much easier and you will have a better indicator
reading of gear lash if you remove the pushrods or release the
adjustment of all 4 pushrods.
1. If th All n h ad scr w No.1122 and spac r No.1085 is
mount d to th top l ft of indicator plat as shown in Fig 1.
r mov both and apply a small amount of cl an oil or lub to
th thr ads of scr w No.1122. Also r mov th indicator by
unscr wing thumbscr w No.1392.
2. Plac scr w No. 1122 through th mounting hol on th back
sid of indicator, follow d by spac r No.1085 ov r th scr w.
See Fig 1.
3. With your 3/16” All n wr nch mount this ass mbly to th top
right sid cam cov r mounting scr w hol . Just fing r tight n scr w no mor th n 50 in-lbs. At th sam
tim placing th sharp nd (tip r mov d) of th indicator’s st m on on of th top t th of cam g ar.
See Fig 2.
4. You will n d to mak sur that th small driv g ar mount d to Pinion shaft can not mov . You can
gain a mor accurat indicator r ading by using a wr nch (on th bolt holding th g ar to cam) to mov
th cam g ar back and forth as you ar ch cking g ar lash.
Note: Follow the manufactures specifications for the correct amount of gear lash required for a quiet valve train.
FIG 2