A
5
3
2
1
2
3
4
1
2
3
4
Pump element
• Pump element (
† Fig.
and
Fig.
) is a
single stroke spring biased pump. Motor
drives eccentric (
). Eccentric is in constant
contact with plunger (
).
• Compression spring (
) is pushing
plunger (
) to open lubricant passage
to create vacuum to prime pump with
lubricant from reservoir. Check valve (
)
is closed to isolate supply lines of system.
• Eccentric (
) is pushing plunger (
) in
opposite direction to pump lubricant,
developing operating pressure. Check
valve (
) is open to pass lubricant
to supply lines.
• Body of pump element has lateral
outlet (
) (
† Fig.
) for lubricant
crossporting to internal material
passages to combine outlet of all
three pump elements.
• Any of the three elements can be
used as pump outlet. Remaining
two elements should be closed with
plug (
A
) (
† Fig.
).
NOTE
Use only pump elements designed for
operation in PS pump. No other
pump elements should be used. See
Service parts
,
page
for correct
pump element part number.
Fig.
Item
Description
A
Closure plug (connection G
/
in. for main line)
Piston
Spring
Lateral outlet for lubricant crossporting
Fig.
Fig.
Pump element Z for internal lubricant crossporting
Item
Description
Eccentric
Plunger
Compression spring
Check valve
Item
Description
Eccentric
Plunger
Compression spring
Check valve