1
GENERAL INSTRUCTIONS
The instructions found herein cover the disassembly, assembly and parts identification of Series
GLH8L-462 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 Instructions Manual,
CA-1, provided with your order. For further detailed information and technical assistance please
refer to Imo Pump, Technical 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 easily understood 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.
INTRODUCTION
This instruction manual covers Imo Pump GLH8L-462. The “GLH” design is an upgrade to existing 8L series
pumps consisting of a modification kit for field conversion. Purchase of the modification kit is a one time
occurrence and will require the installation of a “GLH” major repair kit during overhaul. Because of the large
number of operating conditions, it is necessary to have a variety of construction arrangements and material
combinations to meet application requirements. Each pump is identified with a serial number and model
designator number on the pump nameplate. Definitions of model designators are given in Figure 1.
X X
X
XX
X X X - XXX X
MINOR DESIGN CHANGE
G – Enhanced Thrust Design
HOUSING MATERIAL
L – B
1
Metal Babbitt
DESIGN CHANGE SECONDARY
H – Integral Balance Piston
Housing and Inboard Cover
NUMBER OF CLOSURES AND
BASIC DESIGN
8
– Number of Closures
L – Basic Design – Separate Housing
– Power and Idler Rotors Hydraulically Balanced
– Housings End Cover Retained
LEAD AND ROTATION
ROTOR SIZE
PUMP CASING / SEAL SEAT MATERIAL
U – Steel / Carbide
BALANCE CODE
(Factory Assigned)
MECHANICAL SEAL
(Factory Assigned)
Figure 1. Definitions of Model Designators of GLH8L-462 pumps.
Summary of Contents for GLH8L-462 Series
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