BONNET 4M0411 - Caterpillar

Removal Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
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.
Personal injury or death can occur from not following the proper procedure or the recommended tooling.To prevent the possibility of injury or death, follow the established procedure using the recommended tooling.
Before you remove the air intake shutoff, pull the trip knob on the air intake shutoff or press the emergency stop button in order to release the blade latch. If the blade latch is released after the air intake shutoff is removed, serious personal injury can result.
Manually release the air shutoff. Pull or press in order to release the knob on the air shutoff. Ensure that the indicator on the air shutoff points straight down to the "OFF" position. If the air shutoff did not trip, refer to Troubleshooting, "Air Shutoff System".
Illustration 1 g01303618
Disconnect tube assembly (1) from air shutoff (4).
Disconnect air inlet hose (5) by loosening bolts (2) from adapter (3) on air shutoff (4).
Remove bolts (6) and the washers that mount air shutoff (4) to the intake manifold.
Remove air shutoff (4) and remove the gasket. Note: Inspect the lines of the air intake for debris.Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 2 g01303618
Install a new gasket and air shutoff (4) to the intake manifold. Install bolts (6) and the washers and tighten bolts (6) to a torque of 25 6 N m (18 4 lb ft).
Reconnect air inlet hose (5). Install bolts (2) to adapter (3) and tighten bolts (2) to a torque of 25 6 N m (18 4 lb ft).
Reconnect tube assembly (1) to air shutoff (4).
Reset the indicator on the air shutoff. Ensure that the arrow on the indicator is pointing straight up to the "OPEN" position.
Test air shutoff (4) for proper operation and refer to Operation And Maintenance Manual, "Air Shutoff".