Service manual
2. Overhauling
2-8
2.3.3 Assembly of engine flywheel and generator coupling (rotor)
The mounting holes are not equally spaced along the circumference. Therefore,
position the holes in advance so as to match the coupling counterpart by turning and
adjusting the engine flywheel.
Use guide bolts while centering to mount the assembly.
Tighten the bolts to the specified torque.
(1) Mounting engine
Mount the engine on the vibration isolator rubber
at the frame side of engine. Put angle wooden block
under the engine housing and incline the engine a
little.
(2) Install rotor
1. Hang the center of the rotor with jute rope and
bring it near to the flywheel.
2. Match the rotor coupling plate to the engine
flywheel and then combine them, tightening the
coupling connecting bolts.
The coupling connecting bolts shall be high
tensile bolts 7T or more. (Use 2 guide bolts for
this job.)
Size of guide bolt
SG05047
(mm)
SDG25S-6A7 SDG45S-6A6 SDG65S-6A6 SDG100S-6A6
SDG125S-6A6
SDG150S-6A6
Ｄφ 7.5 9.5 ← ← ← ←
Ｌ 60 75 ← 65 75 ←
Ｉ 25 ← ← ← ← ←
Ｍ M8×1.25 M10×1.5 ← ← ← ←
Tightening torque of generator coupling (rotor) (See ③ of 2.3.1 bolts)
SDG25S
-6A7
SDG45S
-6A6
SDG65S
-6A6
SDG100S
-6A6
SDG125S
-6A6
SDG150S
-6A6
Bolt size M8×1.25-30 M10×1.5-40 M10×1.5-30 M10×1.5-50 M10×1.5-20 ←
Quantity 8 ← ← 9 8
←
Tightening
torque
lbw
･
ft
[N
･
m]
(kgf
･
cm)
23.5
[33]
(325)
46
[62.8]
(640)
← ← ← ←
Engine
Flywheel housing
Wooden
block