MLG Harness

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1 year 2 weeks ago - 1 year 2 weeks ago #1081 by dynamics
MLG Harness was created by dynamics
Mark, with regard to a page of WDM corresponding to main landing gear harness I have just emailed, do you have any idea about red encircled wiring symbols?
Last edit: 1 year 2 weeks ago by Mark.

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1 year 2 weeks ago - 1 year 2 weeks ago #1083 by Mark
Replied by Mark on topic MLG Harness
I have never seen that symbol before.
  
  
 
  
  
Do you know where the wires go after leaving the feed-through plugs at the top of image??
Last edit: 1 year 2 weeks ago by Mark.

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1 year 2 weeks ago #1084 by dynamics
Replied by dynamics on topic MLG Harness
I have just sent the component doc, please go to page 41

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1 year 2 weeks ago #1085 by Mark
Replied by Mark on topic MLG Harness
I see a bunch of mechanical information.

I need wiring or schematics.

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1 year 2 weeks ago #1086 by dynamics
Replied by dynamics on topic MLG Harness
Go to page 41.....

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1 year 2 weeks ago #1087 by Mark
Replied by Mark on topic MLG Harness
From checking your last email, it looks like those items are proximity sensors.

They're labeled as "C" items, but other than the title at bottom of page, there is no cross reference as to what they could be. The pin-outs match your previous print.

The wheel speed transducers and brake temp sensors go to different pins on the harness.
  
  
 
  
  
 
  
 

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1 year 2 weeks ago #1089 by dynamics
Replied by dynamics on topic MLG Harness
How is proximity switch different from micro switch regarding wheel speed sensor?

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1 year 2 weeks ago #1090 by Mark
Replied by Mark on topic MLG Harness
Two completely different functions.

Proximity and micro-switches show position. Speed sensors do exactly as the name says..... output a rotational speed.

On a gear assembly there are wheel speed sensors for Auto-Bakes/Anti-Skid, brake temp sensors, gear tilt sensors (if four or more tires per gear), brake fans (if equipped), squat switches (for weight on wheels), and gear position switches (either micro or proximity).

Not all gear have every item listed above, but you can understand the amount of wiring to support all these.

You're comparing apples to oranges as far as functions go. Each item has its own use. Each item has its own wires.

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1 year 2 weeks ago #1091 by dynamics
Replied by dynamics on topic MLG Harness
Mark, how likely antiskid wiring may have hidden failure that can not be detected through EWIS inspection program established further to cable separation implemented by the type certificate holder?

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1 year 1 week ago #1092 by Mark
Replied by Mark on topic MLG Harness
Unless there is a current issue..... don't mess with it.

Standard test equipment (VOM and Megger) can isolate problems if you have one.

If you're that concerned, pull new ones through to the gear disconnect plugs.

I'm somewhat lost??? Are you having problems with a gear?

We don't go looking for issues, we fix the ones that show up. I'm not into theory or "possibilities". It's either broke or not. We've reached the end of this topic.

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