SKF KFGL - Pump Elements with Positively Driven Pistons; Assembly of a Pump Element with Positively Driven Pistons

4.3.4 Pump elements with positively driven pistons
1) The values given here apply for a temperature of 20 °C, back pressure of 50 bar and greases of NLGI Grade 2.
Labeling,
see table, labeling column
Positively driven pump elements G-1 without pressure regulating valve, Fig. 8
M20x1,5
M14x1,5
see Fig. 9
• Turn off pump unit.
• Unscrew and remove screw plug
(KFG1.128)
Then perform the following:
• Loosen and remove pressure regulating
valve (2) (or lubrication line (3) on an
already mounted pump element (1).
• Switch off the pump unit as soon as the
pump element to be changed (1) begins
pumping. (To position the eccentric ring).
• Section A Disengage the installed pump
element (1) and slowly unscrew it out
• Section B 
thread, slightly raise the pump element (1)
so that the piston comes out of the eccen-
tric ring (4)
• Carefully pull the pump element (1) out
of the housing bore (5), making sure that
the piston (6) is not pulled out of the pump
element
 If the piston does come loose while pulling
out the pump element, remove it from
KFG KFGS KFGL KFGCKFG KFGS KFGL KFGC
Pump elements with positively driven pistons
Delivery rate
1
) Max. permiss. oper. pressure Labeling Order No.
[cm
3
/min] [bar]
5.0 250 L-0 KFG1.U0-E
2.5 350 G-1 KFG1.U1-E
1.8 350 H-2 KFG1.U2-E
1.3 350 J-3 KFG1.U3-E
4.3.3 Assembly of a pump element with
positively driven pistons
Optional pump element outlet G 1/4 “
Page 24
EN
Assembly instructions