Service manual

1
A. GENERAL INSTRUCTIONS
The instructions found herein cover the disassembly, assembly and parts identification of CIG triple pumps.
NOTE: Individual contracts may have specific provisions that vary from this manual. Should any questions arise
which may not be answered by these instructions, refer to the General Installation Operation, Maintenance,
and Troubleshooting Manual, (No. SRM00046), provided with your order. For further detailed information
and technical assistance please refer to Imo Pump, Technical/Customer Service Department, at (704)
289-6511.
This manual cannot possibly cover every situation connected with the installation, operation, inspection,
and maintenance of the equipment supplied. Every effort was made to prepare the text of the manual so
that engineering and design data is transformed into the most understandable wording. Imo Pump must
assume the personnel assigned to operate and maintain the supplied equipment and apply this instruction
manual have sufficient technical knowledge and are experienced to apply sound safety and operational
practices which may not be otherwise covered by this manual.
In a
pplications where equipment furnished by Imo Pump is to become part of processing machinery, these
instructions should be thoroughly reviewed to ensure proper fit of said equipment into overall plant operational
procedures.
WARNING
If installation, operation, and maintenance instructions are not correctly and strictly
followed and observed, injury to personnel or serious damage to pump could result. Imo
Pump cannot accept responsibility for unsatisfactory performance or damage resulting
from failure to comply with instructions.
B. INTRODUCTION
This instruction manual covers CIG triple pumps. This series of pumps has been designed for use in hydraulic,
lubricating seal and fuel oil applications. The model and design construction of each pump can be identified by the
designator code on the pump nameplate. Definitions of model designators are identified in Figure 1.
C. DESCRIPTION OF EQUIPMENT
The CIG triple pumps are positive displacement, internal gear pumps consisting of a single shaft that runs through
the center of pump housings. This shaft drives the external gears (pinion gears) which in turn drives the internal
gears (ring gears). Fluid is carried between the internal and external gear teeth of each pump and is discharged as
the teeth mesh. The pinion and ring gears are separated in each pump by a crescent which is a sealing element in
the pump between inlet and discharge ports.
D. PUMP MODEL IDENTIFICATION
This instruction manual covers the Imo CIG triple series pumps.
The model of each pump is identified on the pump nameplate. Refer to Figure 1 for instructional keys when using
this manual.
E. ORDERING INSTRUCTIONS
When corresponding with Imo Pump regarding CIG Single Series pumps, refer to the pump nameplate, this
instruction manual, and the assembly drawing as instructed below:
1. From pump nameplate, record the pump model number. Also record the manufactured lot number and date (these
are stamped on the housing near the nameplate).
2. Record instruction manual number, revision and date.
3. From the instruction manual, record the figure numbers that apply to the replacement part(s)