300FWF996 Page 21
SECTION 4
SERVICE PROCEDURES
This section describes various assembly
and disassembly procedures necessary for
pump servicing or parts replacement. The
General Requirements and Safety Rules
section is a reminder for the maintenance
personnel of the critical importance of safety
rules and precautions while working on the
pump.
Notes on dangers and notices
specifically related to service procedures are
repeated and placed in this section also.
The pump consists of two major modules:
(1) the fluid end and (2) the combination
power end and gear reduction components.
(See SECTION 2) The description of service
procedures follows the modular concept.
Due to many expendable parts, fluid end
servicing is rather common in the field and is
therefore presented in the very beginning
followed by the power end / gear reduction
components servicing procedures.
General Requirements and Safety Rules
DANGER
Before any attempt to work on pumps
is
made,
all
safety
rules
and
precautions described in this manual
must be read and clearly understood.
DANGER
Only qualified and specially trained
personnel should be allowed to work
on this pump.
DANGER
Proper capacity hoist and lifting
devices should be used while
working on pump.
FLUID END SERVICE
This discussion starts with the description of
steps necessary for removal and installation
of the fluid cylinder assembly and proceeds
to the removal and replacement of
expendable parts such as valves, valve
seats, and packing.
Fluid End Removal and Installation
1.
Disconnect suction manifold from unit
piping and discharge lines at the
discharge flanges on the fluid end,
plunger lubrication lines, and also any
accessories such as stroke counters,
pressure gages, etc. from the fluid end
2.
Open any cover or covers on the top of
the cradle and disconnect the plungers
from the extension rods by removing
plunger clamps.
3.
Move the plungers inside the fluid
cylinder as far as possible, taking care
not to damage the plunger or pony rod.
4.
Connect hoist to the fluid end and
tighten the slings until they are snug
only. Make sure that hoisting slings are
not too tight, because that may put a
strain on the stay rods and damage the
threads when the cylinder is removed.
5.
Remove all twenty (20) heavy hex nuts
from the fluid end mounting flange
using a hydraulic tensioning tool or
hammer wrench. (A hydraulic or
manual
torque
wrench
is
recommended
for
proper
re-
installation. )
6.
Pull the fluid end assembly horizontally,
straight away from the power end until
it is completely free from the tie rods.
7.
Move the fluid end to the service area
for changing valves or other service.
HALLIBURTON EXHIBIT 1013, Page 27
