Wacker Neuson 28Z3

5-14 OM 28Z3 US – Edition 2.0 * * 28Z3b520.fm
Maintenance
5.6 V-belt
Caution!
Crushing, cutting or burn hazards.
• Stop the engine and permit a cool down time. Wait until the engine is
comfortable to touch.
• Only check, retighten, or replace the V-belt when the engine is stopped.
• Disconnect the battery or the battery master switch before proceeding
with work on the V-belt.
NOTICE
Cracked and stretched V-belts cause engine damage
• Have the V-belt replaced by a Wacker Neuson service center.
Check the V-belt once a day or every 10 service hours, and retighten if necessary!
Retighten new V-belts after about 15 minutes of running time.
Checking V-belt tension
• Check as follows:
☞ Stop the engine.
☞ Fold the control lever base up.
☞ Remove the key and carry it with you.
☞ Disconnect the battery or the battery master switch.
☞ Let the engine cool down.
☞ Open the engine cover.
☞ Carefully check V-belt 1 for damage, cracks or cuts.
☞ Replace the V-belt if it touches the base of the V-belt groove or the discs of the
pulley.
• If the V-belt is damaged:
☞ Have the V-belt replaced by a qualified technician.
☞ Press with your thumb about 100 N (22.5 lbs.) to check the deflection of the V-belt
between the crankshaft disc and the fan wheel. A new V-belt should have a deflection
of 6 to 8 mm (0.24’’ to 0.31’’), a used V-belt (after about 5 minutes running time)
should have a deflection of 7 to 9 mm (0.28’’ to 0.35’’) 2.
☞ Retighten the V-belt if necessary.
Fig. 124: Checking V-belt tension
About 8 mm
1
2