OM-2245 / Operation and Maintenance Manual
ITW GSE 4400 / 400 Hz. Generator Set
March 15, 2015
Chapter 3-2
Page 1
Section 2
Dual Bearing Flexible Coupling
1)
General
This manual provides basic instructions for removal, service and installation of a flexible coupling
assembly, with generator fan, manufactured by
ITW GSE
as
Part Number 288481.
This assembly is
illustrated in Figure 3-2-1. The primary function of this assembly is to couple a Hobart 2000 RPM
Generator to a Diesel engine. The flexible coupling assembly compensates for slight misalignment
between the engine and the generator, due to manufacturing tolerances. A tapered bushing and hub
secures the coupling to the generator shaft.
Figure 3-2-1
Coupling Assembly
2) Disassembly
Removal of the flexible coupling is required for servicing the generator armature, generator bearings, or
the coupling itself. To remove the coupling, for any reason, it is necessary to separate the engine and
generator. However, separating the engine and generator while they are installed in the Ground Power
Unit is
VERY DIFFICULT
because of the limited working space. During removal
DO NOT
cut any cables
or wires. Disconnect and tag them for re-assembly.
a) Separate Engine and Generator.
(1) Refer to Chapter 3, Section 3 for generator assembly removal.
Coupling Assembly