General Pump MK Repair Manual - Manual (Page 36)

GENERAL PUMP
A member of the Interpump Group
MK SERIES
Separate the packing support from the liner (1, fig. 121) to access the pressure packings (1, fig 122).
To remove the low pressure packing, use a shim or another tool that doesn’t damage the seat of the packing
support (1, fig. 123).
Page 36
Replace the oil seal (1, fig. 120) and the external O-ring (2, fig. 120).