PAGE
15
www.allfett.net
PUMP ELEMENT MAINTENANCE
Pump elements piston spring may broken. Remove the pump element and spring carefully. Pay
attention spring does not fall into body. Change the spring if necessary.
Pump elements piston may blocked. Remove the pump element and clean with diesel based liquid.
Assemble it to the pump body after drying with pressurized air.
Sealing ring inside the pump elements check-valve may weared or damaged. Change the sealing ring.
Grease may seen coming out from the security valve discharge. This means there is a blockage in
lubrication point or distributor connected this pump element. Blockage may cause the system to reach
very high pressures and couse explode the lubrication lines. Blockage must be identified and fixed.
a.
b.
c.
d.
Remove connected tube from pump elements outlet coupling. Loose pump element from
pump body for 2 - 3 turns. Start to operate pump. When grease coming from around pump element
body, tighten again pump element body to pump. Pump should run contiuously untill grease without
air is seen from pump element outlet. When the grease without air seen from pump element outlet,
coupling must be tightened to outlet again
With this process pump element is now ready to send grease to lubrication point. Grease
coming out from end point of lubrication line may take long time according to line length.
If problems may appear while operate ;
First use of the pump after filling reservoir, air mut be send out from pump element(s).
To do this operation please read description below ;
ALL-25 Multi Line pump body is suitable for 1 and up to 20 pump elements.
Filling the pump must be done by grease nipple on pump body.
Pump element outlet
Security valve body
Pump element body
Grease suction hole
Piston spring
Piston
Security valve discharge
Pump body
