Cummins — 2. Install the shut-off valve onto the pipe and tighten 3

For these Cummins models: GTA38, GTA38, GTA50, GTA50.

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Procedure

1. 3. Reconnect the two electrical wires.
2. 4. Reinstall the flexible hose from shut-off valve to gas
3. flow regulator.
4. 5. Open manual gas shut-off valve.
5. 6. Apply liquid soap to all connections and check for
6. leaks.
7. 7. Reconnect battery power.
8. * Carburetor - Remove and Instail
9. Remove
10. 1. Disconnect battery power from the engine starter
11. and turn off the manual gas shut-off valve that sup-
12. plies gas to the engine. This valve is located in the
13. gas line upstream of the engine prior to the ASCO
14. shut-off valves. Apply a “Do Not Open” red tag to
15. the manual shut-off valve as a precautionary move.
16. 2. Disconnect lower piping and ASCO shut-off valve
17. from carburetor and the RV91 gas flow regulator by
18. loosening the 2” pipe coupling right below the RV9t
19. gas flow regulator.
20. 3. Remove the band clamp from the turbocharger inlet
21. and the carburetor air/fuel outlet pipe.
22. 4. Remove the carburetor air/fuel outlet pipe by remov-
23. ing six 1/2” bolts, washers and nuts with two 3/4”
24. wrenches. Do not reuse the gasket.
25. 5. Remove the RV91 gas flow regulator from the carbu-

Source: manual:Cummins Gas GTA38-50 Manual 1999 (2).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.