WIRTGEN HAMM GRW 280, Operating Manual, Page: 169 / 218

Maintenance
Hydraulic oil supply
© HAMM AG 2011 2153734_02_BAL_GRW280_H195_en 169
4.05 Hydraulic oil supply
4.05.01 General
Check all lines, hoses and screwed connections regularly (at least 1x
yearly) for leaks and visible damage.
Damaged parts must be replaced immediately. Further operation is
inadmissible. Oil spurting out can lead to injuries and fire.
Avoid subsequent damage! After a damage to the hydraulic system,
with a foreign object having entered the oil circuit, the entire hydraulic
system must be cleaned. This work may only be performed by trained
specialised personnel! Call the customer service!
After that, replace all suction filters, return filters or pressure filters in the
hydraulic system after 50 and after 125 operating hours.
888-00
4.05.02 Checking filling level hydraulic oil
1. Switch off diesel engine and remove ignition key.
2. Check only when the engine is cooled down to approx. 20 °C (68 °F).
3. Unscrew ventilation filter [A].
4. Correct oil level: Between the Min. and Max. there is a mark on the
dipstick which applies when the ventilation filter [A] is screwed in.
Do not exceed this level!
5. If the oil level is too low, fill in appropriate oil through filling opening
[B].
6. In case of bigger oil losses, find out and eliminate the cause.
Only lubricant with this sign allowed ( see page 189 sqq.).
811-04