KR8 Issue 10 © 2013
2
Operation on the High Volume Setting
1) The switch is withdrawn allowing ball ‘A’ to seat.
2) The piston is pushed foward by the handle. As ball ‘A’ is
seated, grease cannot return back into the hose. Therefore
both volumes of grease in chambers 1 and 2 are combined
(high volume) and pressurised for delivery to the equipment
requiring greasing.
3) During the operation balls ‘B’ and ‘C’ are forced off their
seats by both volumes of grease passing.
GENERAL MAINTENANCE
When the KR gun has been serviced and the trouble is found
to have been caused by dirt in the valves, the pump unit
should also be cleaned out thoroughly to eliminate the dirt at
its source.
Dirt and foreign matter (lint, etc.) can seriously affect the
operation of this unit.
Dismantling and reassembly of this unit should only be at-
tempted in clean conditions.
THE CORRECT METHOD FOR REMOVING THE KY
COUPLER FROM A GREASE NIPPLE
KR GUN PARTS DIAGRAM
Grease under pressure
Up to 1034kPa
(150 PSI) hose pressure
Grease under pressure
Up to 17MPa
(2500 PSI) hose pressure
Grease supplied from K4 or K7
Pump via hose at a pressure of
1034kPa (150 PSI
HANDLE
PISTON
SWIT
CH
FOR HIGH
VOLUME
ON HIGH VOLUME
CHAMBER 1
CHAMBER 2
C
B
A
