Table of Contents
Advertisement
XI. Oil Change
A check of the condition of the oil can show whether there has been leakage. NOTE: Air/
oil mixture can be confused with water/oil mixture.
Insert a tube (or hose) into the oil hole. Cover the top end of the tube and take up a little oil
from the bottom.
Change the oil if it contains too much water, i.e. if it is heavily emulsified (cream-like), or if
the oil housing contains free water. Check again one week after changing the oil.
1. Lay the pump on its side on a bench or over two supports. Unscrew the oil housing screw
(oil plug) marked "oil out". Emptying the oil must be done through the "oil out" hole.
2. Turn the pump. Unscrew the "oil in" oil hole screw/plug. In order to drain out all oil, the
pump must be raised upright for a short while during drainage.
3. Replace the o-rings under the oil housing screws (plugs) with new ones.
4. Install the "oil out" screw/plug and fill with oil through the other hole. It is important
that the oil be added through the hole marked "oil in" since the oil housing must con-
tain some air for pressure equalization. The pump should be tilted slightly and put down
again horizontally in order to get the full amount of oil in.
A paraffin oil with viscosity close to ISO VG15 is recommended (e.g. Mobil Whiterex
309). The pump is delivered from factory with this type of oil.
In applications where poisonous properties are of less concern, a mineral oil with viscos-
ity up to ISO VG32 can be used.
Please see Parts List for the correct volume.
Figure 1
20
The oil housing may be under pressure. Hold a rag over the oil plug to prevent
splatter.
15GDS/20GDS Installation, Operation and Maintenance Manual
Oil Change
Advertisement
Table of Contents
