i. Pull the pump handle a little and unscrew the end flange fully.
ii. Pull out completely the piston in the barrel along with the stopper.
iii. Mop up the piston and the inside surface of the barrel. Smear a thin layer of fresh grease
on the rubber packing of the piston.
iv. Inspect the piston gasket on the end of the plunger for damage. To replace the gasket,
use a small screw driver or other sharp tool to pull off the worn
gasket, and slip a new
gasket into the groove.
Grease well.
v. Put back the piston in the barrel and tighten the flange.
4.2 Replacement of rubber tube connector:
If the rubber tube connector is worn out, take off the connector holder and replace it with a new
one.