wc_tx003099gb.fm
53
LTN 6L-V
Maintenance
5.12
Checking Fan Belt Tension
When
Check the fan belt for proper tension and wear every 250 hours.
Overview
Correct fan belt tension is critical to proper engine operation. An over-tensioned fan
belt can damage the belt and bearings. A fan belt that is too loose or worn may slip,
resulting in shortened belt life, increased noise, and loss of power to the fan.
Procedure
Perform the procedure below to check the fan belt tension and wear.
1. Open the access door on the fuel tank side of the machine
2. Inspect the fan belt
(a)
for cuts, frayed edges, tears, or glazed surfaces.
3. Apply 10 kg (22 lb) of force between the fan pulley and alternator. If the
deflection
(b)
is greater than 1 cm (0.393 in.), the belt tension must be adjusted.
4. Replace the fan belt if it is damaged, worn, or deflects more than the maximum
acceptable distance.
Result
The fan belt tension has now been checked.
WARNING
Pinching and crushing hazards.
f
Stop the engine before checking the fan belt tension.
wc_gr009368
a
b
