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HAWK21M
Topic Author
Posts: 30125
Joined: Fri Jan 05, 2001 10:05 pm

### B752 Integral Inflation Valve Pressure Gauge.

Explain the B752 Integral Inflation valve Pressure Gauge.
regds
MEL
I may not win often, but I damn well never lose!!!

air2gxs
Posts: 1443
Joined: Mon Jun 18, 2001 1:29 pm

### RE: B752 Integral Inflation Valve Pressure Gauge.

What's to explain? It is a stem mounted gage that has 3 color bands: Red, Yellow, and Green.

We use them only on our through flights. We will use a tire pressure gage on all other checks.

Anything in the yellow or red requires a tire pressure gage to confirm the reading.

They do not have any pressure indications except for the colors.

And no, I don't have pictures.

amtrosie
Posts: 273
Joined: Thu Jan 06, 2005 6:44 am

### RE: B752 Integral Inflation Valve Pressure Gauge.

Sorry Mel, it had to be done!

HAWK21M
Topic Author
Posts: 30125
Joined: Fri Jan 05, 2001 10:05 pm

### RE: B752 Integral Inflation Valve Pressure Gauge.

 Quoting Air2gxs (Reply 1):And no, I don't have pictures

Guess We are all on the same Frequency as mine
Are these Gauges reliable.If so why use the TPG.
regds
MEL
I may not win often, but I damn well never lose!!!

air2gxs
Posts: 1443
Joined: Mon Jun 18, 2001 1:29 pm

### RE: B752 Integral Inflation Valve Pressure Gauge.

Mel,

It's not that they are unreliable, but they only show a range of pressure. The green band only indicates that the tire is at its rated pressure, not the actual pressure. The yellow band tells you that the tire may be in need of servicing, it does not tell you how much.

I should also tell you that we have been removing all our indocator stems because we determined a lot of mechanics were jsut using the indicators and not performing the prerssure checks with the gage when required.

HAWK21M
Topic Author
Posts: 30125
Joined: Fri Jan 05, 2001 10:05 pm

### RE: B752 Integral Inflation Valve Pressure Gauge.

Thanks.Thats Interesting Information.I guess Mx tends to get Lazy when the Indicator is around
Is this feature only common to the B757s.
Out here its the Good O'l TPG for all Wheels on the B737s.
regds
MEL
I may not win often, but I damn well never lose!!!

dl757md
Posts: 1483
Joined: Mon May 24, 2004 9:32 am

### RE: B752 Integral Inflation Valve Pressure Gauge.

 Quoting HAWK21M (Reply 5):Is this feature only common to the B757s. Out here its the Good O'l TPG for all Wheels on the B737s.

At DL the 57 doesn't have the indicator stems but the 738 does. It just depends on the airline.

DL757Md
757 Most beautiful airliner in the sky!

amtrosie
Posts: 273
Joined: Thu Jan 06, 2005 6:44 am

### RE: B752 Integral Inflation Valve Pressure Gauge.

I have seen these gauges on varying A/C. It is not specific to an aircraft type. I found them to be a hassle because flt. crews would insist that mx. be called if "it isn't in the green band" When I was contract, this was an easy money maker, when I worked direct, what a pain!

HAWK21M
Topic Author
Posts: 30125
Joined: Fri Jan 05, 2001 10:05 pm

### RE: B752 Integral Inflation Valve Pressure Gauge.

 Quoting Amtrosie (Reply 7):I found them to be a hassle because flt. crews would insist that mx. be called if "it isn't in the green band"

But if the Indicators are reliable,then if its not in the Green band.It would need Recharging.
regds
MEL
I may not win often, but I damn well never lose!!!

air2gxs
Posts: 1443
Joined: Mon Jun 18, 2001 1:29 pm

### RE: B752 Integral Inflation Valve Pressure Gauge.

 Quoting HAWK21M (Reply 8):But if the Indicators are reliable,then if its not in the Green band.It would need Recharging

There you have it. The indicators are not as reliable as we would like them to be. They are mechanical devices subject to extreme mechanical stresses. The ones I know about aren't even temperature compensated.

They are (were) basically used as reference devices. The flight crews treated them as the gospel.

HAWK21M
Topic Author
Posts: 30125
Joined: Fri Jan 05, 2001 10:05 pm

### RE: B752 Integral Inflation Valve Pressure Gauge.

 Quoting Air2gxs (Reply 9):They are (were) basically used as reference devices. The flight crews treated them as the gospel.

That makes sense then.So Mx double checks with a TPG with the Indicators shows a Doubt.
regds
MEL
I may not win often, but I damn well never lose!!!

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