Entrance Door Airlock Overrule

[GnarlyBus]

What does this overrule lever actually do? I see that it's missing a ball knob. If I set it at about halfway down it lets air out...

The manual talks about microswitches and solenoids involved in entrance door operation, but mine appears totally mechanical. The door locks shut when the door is shut hard or from the inside with the mechanical handle. It can be opened by pushing in the knob on the front of the bus. Am I missing something?

[lostagain]

It is missing a red ball on the end of it. In the up position pulled toward you, the air operated claw pulls the door tight. In the down position, the claw retracts so you can open the door in an emergency. Otherwise the claw is controlled by the handle and by the button outside on the front of the bus. Look in the manual to see the details.

JC

[lostagain]

It is missing a red ball on the end of it. In the up position pulled toward you, the air operated claw pulls the door tight. In the down position, the claw retracts so you can open the door in an emergency. Otherwise the claw is controlled by the handle and by the button outside on the front of the bus. Look in the manual to see the details.

JC

[GnarlyBus]

It is missing a red ball on the end of it. In the up position pulled toward you, the air operated claw pulls the door tight. In the down position, the claw retracts so you can open the door in an emergency. Otherwise the claw is controlled by the handle and by the button outside on the front of the bus. Look in the manual to see the details.

JC

This doesn't sound like how my bus is. I've read the Maintenance and Operators Manuals. My setup doesn't seem to match this. This overrule seems to do nothing. The door is shut by the handle inside the bus which seems to hold it tight and released by the button outside the bus. I don't see any other mechanisms.

So, if the overrule is depressed, the door won't lock no matter what position the manual handle is in?

Where is this "claw"?

[lostagain]

The claw is air operated and is located on the left side of the door looking at it from the outside (opposite the hinge side). In the OEM configuration, the claw always pulls the door in tight when it is closed. It is a good feature because it reduces the wind noise at speed. The purpose of the red lever is to overrule the system to get out of the bus in an emergency. All buses have a similar system for safety. Now who knows what a previous owner has done to it...

You can see the air cylinder that operates the claw from inside the spare tire compartment.

JC 

[GnarlyBus]

Hmmm. I'll have to get into the spare tire area and look for it. I'm thinking somehow mine doesn't have this. On my door, the non-hinge side is totally smooth.

Wind noise was an issue until I installed a surface mount deadbolt.

[Dave5Cs]

To the left of the stairs there might still be a panel SS that can be removed and the mechanism is behind that on some. Ours was taken out but the cylinder and relays were still in there. but no claw.

[GnarlyBus]

Ok, I can see now on the door and next to it where the old mechanism was. I guess I don't need this lever anymore then.

Thanks for the help everyone!

[jraynor]

This is what mine looks like as you enter the bus on the left hand side. 1986 TMC 102A3

[brmax]

Good day there

In the topic I got a question: do some of these doors have an arch on the lock, latch or wheel side.

I ask for one, as there are post through many years discussing different handle latch mechanisims installed. I guess in the same general area as the claw or lock.



Floyd