Checking Fan Belt Damage And Wear - Kubota WSM 05-E4B Series Workshop Manual

CHECK AND MAINTENANCE
4. Check points of every 100 hours
1. Check the tension of fan belt at the position (A)
between the fan drive pulley and alternator pulley
with sonic belt tension meter.
NOTE
• If the measurement is out of the service
specifications,
mounting screws and adjust its position.
Sonic belt tension meter setting value
Mass
(Mass per 1 rib 1 m of belt)
Width
(Number of ribs)
Span L
Service specifi-
Belt tension
cation
(A) Fan belt halfway
(Reference)
• If you can not prepare the sonic belt tension
meter, check the fan belt tension by next
procedure.
a. Push the belt halfway between the fan drive
pulley and alternator pulley at a specified force
to measure the deflection (1).
NOTE
• If the measurement is out of the service
specifications,
mounting screws and adjust its position.
Service specifi-
Deflection (B)
cation
05-E4B SERIES,05-E4BG SERIES
loosen the alternator
75 g/rib/m
1
Measure at location (A) in the
figure with (L) as the distance
between the fan drive pulley
and alternator pulley.
200 to 300 N
20.4 to 30.5 kgf
45.0 to 67.4 lbf
loosen the alternator
10.0 mm
0.39 in.
(Under load of 98 N
(10 kgf, 22 lbf))
(B) Deflection
4.4 Checking fan belt damage and
wear
1. Check the fan belt for damage.
(A) Good
2. If the fan belt is damaged, replace it.
3. Check if the fan belt is worn and sunk in the pulley
groove.
(A) Good
4. If the fan belt is nearly worn out and deeply sunk in
the pulley groove, replace it.
3. MAINTENANCE
(B) Bad
(B) Bad
3-9
KiSC issued 03, 2023 A