Hydraulic Oil - Fayat Group Bomag BW 138 AD-5 Operating Instruction, Maintenance Instruction

Maintenance – Fuels and lubricants
8.2.4

Hydraulic oil

8.2.4.1 Mineral oil based hydraulic oil
162
Add anti-freeze agent:
n If the coolant level drops because of evapo-
ration,only clean water is to be used for top-
ping up.
n In case of leakages you must always fill in
anti-freeze agents of the same brand and
the same mixing ratio.
Do not use any radiator cleaning agent after
the anti-freeze agent has been mixed in. The
anti-freeze agent also contains a corrosion pro-
tection agent. If this mixes with cleaning agent
it may cause the development of sludge, which
could damage the cooling system.
Anti-freeze concen-
tration
50 %
The hydraulic system is operated with hydraulic
oil HV 46 (ISO) with a kinematic viscosity of
2
46 mm /s at 40 °C (104 °F) and 8 mm
100 °C (212 °F).
When refilling or changing oil, use only
hydraulic oil type HVLP according to DIN
51524, part 3, or hydraulic oil type HV
according to ISO 6743/4.
The viscosity index must be at least 150
(observe information of manufacturer).
BW 138 AD-5
Freezing point
-37 °C (-35 °F)
2
/s at