SHOP MANUAL
SHOP MANUAL
LUBRICATION SYSTEM
Ch 4 Page 8 Ch 4 Page 9
LUBRICATION SYSTEM
Grease is pumped into the metering unit (pumping
phase A) through primary grease line A. Because of
the grease pressure, internal plunger (3) is pushed
to right, passed channel (1). The grease fills cham-
bers (2) through the channels and press the exter-
nal plunger (4) to the right.
After a while, the pressure drops in the primary
grease line A (during the pressure decrease phase
of the greasing cycle). This has no influence on the
metering unit.
1
2
3
4
A
B
6
2
1
4 7
3
8
9
10
5
Grease is pumped into channel (6) of the metering
unit (pumping phase B) through primary grease line
B. Because of the grease pressure, internal plunger
(3) is pushed back leftwards, passed channel (8).
The grease fills chamber (7) and pushes external
plunger (4) back to the left. The complete grease
volume of chamber (2), to th left of external plunger
(4), is pressed through channel (1), internal plunger
(3) and channel (9) and the secondary grease line
(5) to the greasing point. Sphere in non-return valve
is pushed back to clear the path to the secondary
grease line.
After a while, the pressure drops in the primary
grease line B (during the pressure decrease phase
of the greasing cycle). This has no influence on the
metering unit.
In this phase the same happens as in the first
phase described early. However chamber (7) is now
filled with grease. External plunger (4) is pushed to
the right while chamber (2) is filled. The complete
grease volume of chamber (7) is pressed through
channel (8), internal plunger (3) and channel (9)
and the secondary grease line (5) to the greas-
ing points. Sphere (10) in the non-return valve is
pushed back to clear the path to the secondary
grease line.
A
3 9
10
2 4
8
5
Figure 8
Figure 7
Figure 6
To Next Page