Hokuetsu AIRMAN PDS185S-6EZ1 Instruction Manual page 25

3.3.10 Check belt tension
Follow the procedure below to adjust tension of belt for alternator.
Adjust the tension by gradually loosening the fastening bolt and nut of the alternator.
Depress the middle of
the belt with a finger.
Alternator
TR0304

Too tight belt tension could damage shaft and shorten bearing life. Too loose belt tension may result in
damaging belt earlier and machine components due to overheat.
3. Operation
<Procedures>
1. Visually check if there are any cracks or tears in the
2. Check if the deflection is between
This deflection
should be 0.24 to
0.26 in.
(6 to 6.5mm).
3. Tighten the alternator mounting bolt when the


A010181-1

Be sure to stop the engine whenever the tension of the belt is to be adjusted.

Remove the negative (–) side cable from the battery.

If the unit is not stopped, the operator's hand may be caught in the belt and
cause serious injury.

If inspecting or maintaining the area near the cooling fan, always stop the
machine before going forward.

Otherwise, personnel could become caught by the fan and thus could be
seriously injured.
belt.
to 6.5mm) when the belt is pushed at the center
with a force of about 22 lbf (98N). If not, loosen the
adjustment bolt of the alternator once and adjust
again.
adjustment is completed.
Be careful not to leave any grease or LLC on a belt
while changing it. If any such material is left, wipe
it off completely.
For details of adjustment, refer to the engine
operation manual.
3-9
0.24 to 0.26 in. (6