SPRING 3891089 - Caterpillar

Disassembly Procedure
Start By:
Remove the gas pressure regulator. Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
Illustration 1 g01001902
Remove gas line (1) from gas pressure regulator (2).
Illustration 2 g01004499
Remove valve seat (3) from the tee fitting on the gas line.
Remove the retaining ring and the coupling from the gas pressure regulator.
Illustration 3 g01001904
Personal injury can result from parts and/or covers under spring pressure.Spring force will be released when covers are removed.Be prepared to hold spring loaded covers as the bolts are loosened.
Remove the bolts and cover (4) from the gas pressure regulator.
Remove spring (5) and diaphragm assembly (7) from the gas pressure regulator.
Remove valve (6) from the gas pressure regulator.