SHAFT AS 5G9844 - Caterpillar

Illustration 1 g02558079
Table 1
Specification for the 274-7413 Air Shutoff Gp and 119-7557 Air Shutoff Gp
Item Qty Part Specification Description
1 2 5N-3852 Bearing Distance of bearing installation below the surface of the elbow is 0.25 0.25 mm (0.010 0.010 inch).
The bore in the elbow for the bearings is 18.263 0.013 mm (0.7190 0.0005 inch).
2 1 4P-8021 Valve As The valve assembly is shown in the run (open) position. When the valve is closed, a 0.08 mm (0.003 inch) feeler gauge must not fit between the valve and the bore in the pipe at any point.
3 1 5N-2830 Shaft As Diameter of shaft is 15.800 0.025 mm (0.6221 0.0010 inch).
Bore in the bearing is 15.88 mm (0.625 inch).
4 1 5H-1190 Lip Type Seal Lightly lubricate the shaft with glycerin or approved equivalent.
5 1 3N-7848 Spring Length under test force is 22.9 mm (0.90 inch).
Test force is 4.4 N (1.0 lb)
Free length after test is 35.56 mm (1.400 inch)
6 1 5N-5129 Shaft As needed, adjust the shaft to change the spring tension until the hold in current consumption (draw) is less than 2 amp at shutdown.
Diameter of shaft is 9.60 0.03 mm (0.378 0.001 inch).
Bore in the bearing is 9.80 0.03 mm (0.386 0.001 inch).
7 1 108-2858 Spring Free length is 54.5 0.5 mm (2.15 0.02 inch)
8 1 5N-5664 Bracket As Bracket assembly must be adjusted so that the valve assembly is parallel to the pipe bore within 2 degrees in run position.
9 1 4N-3890 Solenoid As Voltage rating is 18.0 to 38.4 VDC.
Current consumption in pull-in windings at 38.4 VDC is 39.1 amp.
Current consumption in hold-in windings at 38.4 VDC is 0.58 amp.
Distance from the plunger face to the flange face after the solenoid has been energized is 8.0 0.5 mm (0.32 0.02 inch).
10 1 1W-9070 Diode The diode assembly is required to suppress the back voltage spike that is generated when the solenoid is turned off.