3406 INDUSTRIAL & MARINE ENGINES Caterpillar


Air Shut-Offs

Usage:


LATER TYPICAL ILLUSTRATION


EARLIER TYPICAL ILLUSTRATION

(1) Valve assembly shown in the open position.

When the valve is closed a .003 in. (0.08 mm) feeler gauge must not fit between the valve and the bore in the pipe at any point.

(2) 3N4586 Torsion Spring:

Free length ... 1.87 ± .02 in.(47.5 ± 0.5 mm)

Outside diameter ... 1.21 ± .02 in.(30.7 ± 0.5 mm)

(2) 3N9106 Torsion Spring:

Free length ... 2.50 ± .02 in.(63.5 ± 0.5 mm)

Outside diameter ... 1.21 ± .02 in.(30.7 ± 0.5 mm)

Total coils ... 7.7

(2) 5N2761 Torsion Spring:

Free length ... 1.96 ± .02 in.(49.8 ± 0.5 mm)

Outside diameter ... 1.21 ± .02 in.(30.7 ± 0.5 mm)

(3) 3N7848 Spring:

Free length ... 1.40 ± .02 in.(35.6 ± 0.5 mm)

Outside diameter ... .74 ± .02 in.(18.8 ± 0.5 mm)

(4) 3N7562 12V Solenoid

3N7563 24 or 32V Solenoid

4N3889 12V Solenoid

4N3890 24 or 32V Solenoid

Plunger travel* ... .46 ± .01 in.(11.7 ± 0.3 mm)


*Hold-in current consumption (draw) on engine must be less than 2A.

Caterpillar Information System:

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