PUMPS
SUB-SECTION 4B
CARTRIDGE REPLACEMENT
DISASSEMBLY. Disassemble the pump to replace the
pumping cartridge, as follows:
GENERAL. Preassembled replacement cartridges are avail-
able for rapid field overhaul of these pumps. If a replace-
1. Support the pump on blocks or clamp the body in a vise
ment cartridge is being used, proceed as described below for
If a vise is used, use protective to avoid damage to the
disassembly and reassembly.
body and its machined surfaces.
Figure 4B-40 shows the proper relationship of the parts for
disassembly and reassembly. During disassembly, pay par-
2. Mark the body and cover for correct reassembly. Re-
ticular attention to identification of the parts for correct
move the four cover screws and lift the cover off the pump.
reassembly.
Remove the cover O-ring. Pull and/or pry out the cartridge.
4B-24
Figure 4B-40. Exploded View of Single Pump