F-1031, Section 4205.1
Page 2 of 24
Rev: 01/18/08
Introduction
This section contains overhaul instructions for Waterous CP-1, CP-2, CP-2L
and CPD-2 centrifugal fire pumps. Although several types of transmissions
are used with the CP-1 and CP-2 pumps (CP-2L is used only with the TA
transmission, CPD-2 is pedestal mounted), only the K-series transmission is
covered in this instruction. NOTE that this instruction is written to cover several
variations of the CP-1 and CP-2 pumps, not all steps will apply to any one
pump.
Also refer to the Service Parts List (SPL documents) furnished with your pump
to aid in further part identification and repair parts ordering.
E301-A and E302-A models are CP-1 and CP-2 pumps mounted on Kubota
diesel engines from the factory. Any of the following instructions for CP-1 and
CP-2 models apply to E301-A and E302-A models (respectively).
General Description
The CP series pumps are designed to provide a wide range of pressures and
capacities and can be driven by a truck transmission mounted power take-offs
or other suitable drives. All CP-1 and CP-2 pumps have an integral speed
increasing transmission with proper gear ratios to provide required impeller
speeds at available input speeds, whether pumping from tank, draft or in relay
operation. CP pumps may be operated independently, simultaneously or in
series with the main pump on the apparatus.
General Overhaul Information
Tools and Equipment
The following tools and equipment are needed to overhaul a pump:
1.
Usual automotive mechanic's hand tools.
2.
An arbor press for assembling or disassembling components.
3.
An engine lathe for turning impeller hubs.
4.
A suitable hoist and slings.
5.
Torque capability up to 325 lb-ft.
While no special tools and equipment are required, a few special items are
illustrated or described so the mechanic can make them or they are available
from the apparatus manufacturer or the Waterous Company. These special
items are not absolutely necessary, but they will make the mechanic's work
much easier.
Preliminary Testing
Before disassembling a pump, test it thoroughly, if possible, and record the
results. A comparison of this test with periodic tests recommended in form
F-1031, Section 1000 can often reveal specific pump troubles. Excessive
speed, for instance, indicates that impellers and/or wear rings are probably
worn.
Cleaning
The continued satisfactory operation of a pump depends to a great extent
upon the cleanliness of its internal parts. Sand, dirt or other abrasive material
will wear bearings, gears and related parts. Before disassembling a pump for
repairs, be sure to clean its exterior. Make sure the working space, benches
and tools are clean. Use only clean, lint-free cloths to wipe off components.
Before reassembling a pump or its components, be sure to clean them thor‐
oughly.
Pump Bodies and Impellers
Flush out these components and related parts with clean water. Use a stiff
brush to remove loose scale, caked sediment, etc. Be sure to remove all
traces of old gaskets. Examine pump bodies, covers, adapters and fittings for
cracks, severe corrosion or other damage. Almost all damage to these parts
results from improper use or maintenance, or from freezing. Replace defective
parts.
Bearings, Gaskets, Seals and O-rings
Parts of this nature are frequently damaged during removal or disassembly. In
addition, they sometimes deteriorate or lose their effectiveness because of age
or misuse. Replacing these parts whenever overhauling a pump is a good
policy.
Summary of Contents for CP-1 Series
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