Ammann ARR 1575 Yanmar, Operating Manual

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3.6. Individual Operations of Maintenance
Every 250 operating hours (3 months)
3.6.14. Check of the fan and engine belt
condition
First carry out after 50 hours.
• Check the ventilator visually. In case of any damage (e.g.
missing parts of the material, cracks, changes in shape etc.)
replace the ventilator.
Fan
Order number: 1-952338
• Check visually the belt, for intersecting crakcks. Longitudinal
(direction of belt length) cracks that intersect with traverse
cracks are not acceptable. Replace the belt if it is frayed or
has pieces of materiál missing.
The engine must be stopped for check of tightness of the
belt.
• Use your thumb to press the belt by the force of 100 Nm.
Check the slack of the belt at the point illustrated in the
picture. It should be between 10-14 mm.
Belt
Order number: 1183743
• If needed, tighten the belt by releasing the bolt and shifting
the alternator.
• Let the engine run for five minutes and then check the belt
for correct tightness.