JIMS Box 2 1208-1352 (all models of 120, 131, or 135 Alpha, Beta and Evo Mount Engines) - Manual (Page 18)

Rev I
8-12
No.1208-1352
A Division of Thiessen Products, INC
IIn ns st tr ru uc ct tiio on n S Sh he ee et t F Fo or r B Bo ox x 2 2 1 12 20 0” ”,, 1 13 31 1” ” o or r 1 13 35 5” ”
E En ng giin ne e A As ss se em mb bl liie es s O Or r E En ng giin ne e R Ra ac ce e K Kiit ts s
STEP 11: Center Case Bolt Torque Settings
• The 1/4” center case bolt must be retorqued
prior to initial start-up, and again after the
engine has cooled.
• All case bolts must be re-torqued once the
engine has cooled after initial start up.
Retorquing must be continued after each heat
cycle until the case bolts cannot be torqued
any further.
• Refer to your Twin Cam “A” or ”B” H-D Service
Manual for the proper tightening sequence
and torque specifications for all case bolts with
the following exception: Important: The
torque value for the center case bolt is 135-155
in/lbs.
• Center case bolt torque specification: During
each case bolt re-torquing sequence the H-D
prescribed torque specification for the 1/4”
center case bolt (#1 in the H-D Service manu-
al diagram) should be amended to 135-155
in/lbs. See Fig. 71 for Engine “A” & 72B for
Engine “B”.
555 Dawson Drive, Camarillo, CA 93012 Phone 805-482-6913 • Fax 805-482-7422
Fig.66 Torque Pattern
Pu
sh
ro
d
Bo
re
s
Pu
sh
ro
d
Bo
re
s
LE
FT
S
ID
E
R
IG
H
T
SI
D
E
REAR
FRONT
Fig.71 - Case torque sequence Fig.72 - Case torque sequence
ENGINE “B”
ENGINE “A”
Please Note: The following case bolt re-torquing
procedure contains a specification for the center
case bolt that is unique to your new JIMS 120”,
131” or 135” Race Kit.
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