Wacker Neuson 28Z3 Service Manual

3-28 SHB 28Z3 EN – Edition 2.0 * 28z3s312.fm
Maintenance
3.12 V-belt
Danger!
Only check or retighten/replace the V-belt when the engine is stopped
–
Danger of personal injury!
☞ Stop the engine before carrying out inspection work in the engine compart-
ment!
☞ Disconnect the battery
☞ Let the engine cool down
Caution!
Cracked and stretched V-belts cause engine damage
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
☞ Stop the engine
☞ Fold the control lever base up
☞ Remove the ignition 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 if the pulleys are
damaged.
• If the V-belt is damaged:
☞ Press with your thumb about 100 N (22.5 lbs/ft) to check the deflection of the V-belt
between both pulleys.
The deflection of a new belt should be 6 to 8 mm (0.24 – 0.31”).
Otherwise, deflection should be 7 to 9 mm (0.27 to 0.35”) after about 5 minutes run-
ning time (see Fig. 28/2).
☞ Retighten the V-belt if necessary
☞ Close and lock the engine cover
Caution!
Overtightening the V-belt can damage the V-belt, the V-belt guide, the alter-
nator bearing and the water pump bearing.
Avoid contact of oil, grease or similar substances with the V-belt.
☞ Replace V-belts with damage, cracks, cuts etc.
☞ Avoid contact of oil, grease or similar substances with the V-belt
Fig. 28: Checking V-belt tension
1
About 8 mm
2

Wacker Neuson 28Z3 Specifications

General

Brand	Wacker Neuson
Model	28Z3
Category	Excavators
Language	English