42
HC 950 • HC 970
GB
Servicing
10. Servicing
10.1 General servicing
The unit should be serviced once a year by the Wagner Service.
1. For servicing of the gasoline engine, refer to the engine
instructions.
2. Check the high-pressure hoses for damage.
3. Check the inlet and outlet vents for wear.
4. Check oil level in hydraulic oil tank.
5. Carry out an oil change if necessary.
10.2 Checking the oil level in the hydraulic oil tank
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Gasoline units — Check oil level daily.
Electric units — Switch off unit “O” (OFF).
Remove the mains plug from the socket.
1. Turn oil measuring stick (fig. 17, item 1) to the left and pull out.
2. The oil level should be visible between the marking (see
arrows) on the oil measuring stick.
3. If necessary, refill oil. For information on the oil grade, refer to
the oil change section, chapter 10.3.
1
min:
max:
10.3 Oil and oil filter change ot the hydraulic oil
pump
Carry out oil and oil filter change once every 12 months.
Danger to the environment
Do not dispose of waste oil into the sewer or soil.
Polluting the ground water is a crime. Waste oil can
be returned where hydraulic oil is bought.
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Carry out an oil change while the unit is still warm
from operation.
Electric units — Switch off unit “O” (OFF).
Remove the mains plug from the socket.
1. Turn off the gasoline engine or electric motor.
2. Move the hydraulic ball valve (fig. 18, item 1) on the material
feed pump to its vertical position (open).
3. Remove the screws on the hydraulic oil pump cover (2) and
remove cover.
4. Turn oil measuring stick (3) to the left and pull out.
5. Screw out oil filter (4) with a strap spanner and replace.
6. Screw out sealing screw (5) under the hydraulic oil tank. Drain
the waste oil.
7. Replace the sealing screw into the hydraulic oil tank.
8. Fill in 4.7 liters of ESSO ISO 32 hydraulic oil.
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When oil is filled in, air can enter the hydraulic
system. Therefore, the system must be vented.
9. Let the unit run for at least five minutes at low pressure to
automatically bleed the air from the hydraulic system.
3
1
5
2
4
10.4 High-pressure hose
Inspect the high-pressure hose visually for any notches or bulges, in
particular at the transition in the fittings. It must be possible to turn
the union nuts freely.
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The risk of damage rises with the age of the high-
pressure hose. Wagner recommends replacing high-
pressure hoses after 6 years.
Summary of Contents for HC 950 230V
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