173Section 9 Gas Fuel SystemsTP-6356 4/12
347940B-K
Figure 9-17 20 kW with LRG-423 Engine
347940B-K
Figure 9-18 20 kW with LRG-425 Engine
9.9 Natural Gas to LP Gas Vapor
Conversion
(30--100 kW GM-Powered Models with
Barber-Colman Governor)
Adapted from Service Bulletin SB-612.
This section provides instructions for converting the
General Motors engine-powered generator sets from
natural gas to LP gas vapor on models with Barber-
Colman governors. Figure 9-19 lists specification
numbers for generator sets with Barber- Colman
governors.
Model, kW Spec No.
30 GM13685-GA1, 4, 7, 10
35 GM13685-GA2, 5, 8, 11
45 GM13685-GA3, 6, 9, 12
50 GM13686-GA1, 3, 5, 7
60 GM13686-GA2, 4, 6, 8
80 GM13934-GA1, 2, 3, 4
100 GM13934-GA5, 6, 7, 8
Figure 9-19 Specification Numbers
Figure 9-20 and Figure 9-21 show the 50/60 kW
models; the 30--45 kW and 80/100 kW models are
similar.
GM14257-C
1. Fuel mixer
2. Fuel regulator (upright position)
3. Fuel line elbow
4. Fuel line
5. Fuel line union connector
1
2
3
4
5
Figure 9-20 Natural Gas Fuel System Configuration
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