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| temps using ir temp gauge [message #128494] |
Fri, 03 June 2011 15:06  |
chasingsummer
Messages: 434
Registered: May 2011
Location: asheboro, nc
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what temps are people seeing, i just looked at my van brake rotor after i got home. vechicle is used from stop to stop all day long, usually 3 to 5 stops and maybe average 125 miles or so a day. this rotor using my new toy read 150 degrees. which makes me wonder what normal should be, reference to tires, rotors or hubs, radiator and maybe valve cover. i plan on checking on my up coming trip, but without having idea of what normal is then???
ps, this site is great, i used to think the harley people helped each other out, but they have no idea what true help is. thanks to all and there 2 cents worth, all is appreciated
bgk
brian
asheboro, nc
75 eleganza, 74 build
119k miles and counting,
DOG HOUSE
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| Re: [GMCnet] temps using ir temp gauge [message #128496 is a reply to message #128494] |
Fri, 03 June 2011 15:15  |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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At the Cascaders rally at Mayfield lake, I checked 3 coaches as they were
arriving, weather was cool & wet, nothing I saw over 110 Degrees on the
fronts and rears. Most were cooler than that. HF laser gun type. Always used
to use my fingers until we were checking Ricks coach at GMCWS in Auburn Ca.
during check rides for the reaction arm. The Alcoas were hot enough to burn
your fingers all around the coach. They were panic stopping with various
drivers to demo. That reaction arm is the best thing since sliced bread. It
just works.
Jim Hupy
Salem, Or
78 GMC Royale 403
On Fri, Jun 3, 2011 at 1:06 PM, brian <chasingsummer@triad.rr.com> wrote:
>
>
> what temps are people seeing, i just looked at my van brake rotor after i
> got home. vechicle is used from stop to stop all day long, usually 3 to 5
> stops and maybe average 125 miles or so a day. this rotor using my new toy
> read 150 degrees. which makes me wonder what normal should be, reference to
> tires, rotors or hubs, radiator and maybe valve cover. i plan on checking on
> my up coming trip, but without having idea of what normal is then???
> ps, this site is great, i used to think the harley people helped each other
> out, but they have no idea what true help is. thanks to all and there 2
> cents worth, all is appreciated
> bgk
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] temps using ir temp gauge [message #128498 is a reply to message #128496] |
Fri, 03 June 2011 15:31 |
chasingsummer
Messages: 434
Registered: May 2011
Location: asheboro, nc
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i assume wet weather lowered temps a little, i do appreiate input and i look forward to other responces, i assume if it is 90 out and sunny, then tires should reach 110 , but that is assuming, i also assume if water temp is 200 or so, then radiator should be that also. with the prices of these gauges, which mine is a ryobe from home depot, around 25 dollars, that more people should have them. a lot of tempts can be checked while gas pump is running
brian
asheboro, nc
75 eleganza, 74 build
119k miles and counting,
DOG HOUSE
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| Re: temps using ir temp gauge [message #128502 is a reply to message #128494] |
Fri, 03 June 2011 16:19 |
willietrucker
Messages: 83
Registered: April 2010
Location: Central Texas
Karma: 0
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The front bearings on my 23' "Used to be a Birchaven", are monitored by bearing temperature monitors from Mikamar. Just to keep 'em honest, I check the bearings with an IR as well.
On the last trip to Patterson, LA from Central Texas, the monitors did not read over 112 degrees F. I verified this with the IR just to confirm. The weather at the time was hot (low 90's).
The IR readings on the rear drums all were within a couple of degrees of each other but I don't recall what the temps were.
Tom Henderson
Elgin, TX
'76 Birchaven 23'
GMC..."Gimme More Cash"
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| Re: [GMCnet] temps using ir temp gauge [message #128506 is a reply to message #128502] |
Fri, 03 June 2011 16:55 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Most of the wheel bearing greases (soap base dino type) have a temp range up
to 450 or so. The synthetics have a somewhat higher temp range. Cause for
concern temps on the hubs is probably over 200 Degrees, in my personal
experience. When I first got my 78 Royale, the driver side front brakes had
completely worn the friction lining away, and were metal to metal with the
rotor. The heat that had been present, welded the metal backiing to the
caliper piston. Had to use an air chisel to break the welds. Ruined the
caliper, flex brake hose, front wheel bearings, knuckle and hub were heat
cracked, drive shaft was discolored, rotor was ruined. Pass side wasn't far
behind. About $2000.00 later I had good front brakes. Previous owner said
"Brakes are good" hate to see his bad. Might be an excellent idea to check
those hub temps every time you stop. You can get one of those laser IR heat
guns from HF on sale for $30.00 or so. What saved my butt was the fact the
front flex lines had melted internally, and no brake fluid was getting
through to the caliper. All the fluid in them had boiled away. Back brakes
only are not very effective, but will get you home if you drive like you
have no brakes.
Jim Hupy
Salem, OR
78 GMC Roayle 403
On Fri, Jun 3, 2011 at 2:19 PM, Tom Henderson <willietrucker@gmail.com>wrote:
>
>
> The front bearings on my 23' "Used to be a Birchaven", are monitored by
> bearing temperature monitors from Mikamar. Just to keep 'em honest, I check
> the bearings with an IR as well.
>
> On the last trip to Patterson, LA from Central Texas, the monitors did not
> read over 112 degrees F. I verified this with the IR just to confirm. The
> weather at the time was hot (low 90's).
>
> The IR readings on the rear drums all were within a couple of degrees of
> each other but I don't recall what the temps were.
> --
> Tom Henderson
> Elgin, TX
> '76 Birchaven 23'
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] temps using ir temp gauge [message #128524 is a reply to message #128506] |
Fri, 03 June 2011 19:48 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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I've a John Fluke I use at work - Model 62 I think. At any rate the lowest cost Fluke, I saw one on ebay for $36. Under a hundred new with warranty, etc. Point n click, even has a laser dot to show you what it's measuring.
'If it works, it's a Fluke'
--johnny
--- On Fri, 6/3/11, James Hupy <jamesh1296@gmail.com> wrote:
From: James Hupy <jamesh1296@gmail.com>
Subject: Re: [GMCnet] temps using ir temp gauge
To: gmclist@temp.gmcnet.org
Date: Friday, June 3, 2011, 9:55 PM
Most of the wheel bearing greases (soap base dino type) have a temp range up
to 450 or so. The synthetics have a somewhat higher temp range. Cause for
concern temps on the hubs is probably over 200 Degrees, in my personal
experience. When I first got my 78 Royale, the driver side front brakes had
completely worn the friction lining away, and were metal to metal with the
rotor. The heat that had been present, welded the metal backiing to the
caliper piston. Had to use an air chisel to break the welds. Ruined the
caliper, flex brake hose, front wheel bearings, knuckle and hub were heat
cracked, drive shaft was discolored, rotor was ruined. Pass side wasn't far
behind. About $2000.00 later I had good front brakes. Previous owner said
"Brakes are good" hate to see his bad. Might be an excellent idea to check
those hub temps every time you stop. You can get one of those laser IR heat
guns from HF on sale for $30.00 or so. What saved my butt was the fact the
front flex lines had melted internally, and no brake fluid was getting
through to the caliper. All the fluid in them had boiled away. Back brakes
only are not very effective, but will get you home if you drive like you
have no brakes.
Jim Hupy
Salem, OR
78 GMC Roayle 403
On Fri, Jun 3, 2011 at 2:19 PM, Tom Henderson <willietrucker@gmail.com>wrote:
>
>
> The front bearings on my 23' "Used to be a Birchaven", are monitored by
> bearing temperature monitors from Mikamar. Just to keep 'em honest, I check
> the bearings with an IR as well.
>
> On the last trip to Patterson, LA from Central Texas, the monitors did not
> read over 112 degrees F. I verified this with the IR just to confirm. The
> weather at the time was hot (low 90's).
>
> The IR readings on the rear drums all were within a couple of degrees of
> each other but I don't recall what the temps were.
> --
> Tom Henderson
> Elgin, TX
> '76 Birchaven 23'
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
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Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: temps using ir temp gauge [message #128533 is a reply to message #128494] |
Fri, 03 June 2011 20:19 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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| chasingsummer wrote on Fri, 03 June 2011 13:06 |
what temps are people seeing, i just looked at my van brake rotor after i got home. vechicle is used from stop to stop all day long, usually 3 to 5 stops and maybe average 125 miles or so a day. this rotor using my new toy read 150 degrees. which makes me wonder ...
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Brakes do get VERY hot... they are designed to! But they are also designed to dissipate the heat rather quickly... if allowed to. If you are checking how well your brakes are working, you'll need to brake very hard to a stop... Then jump out quickly to "shoot the brakes." If my brakes seem to be working normally, I do not routinely check if the brakes operate and generate "lots" of heat.
What I DO routinely check is the hub and tire temperatures and if the brakes are DRAGGING. Hard braking just before these checks might mask one of these issues.
When pulling into a rest stop I try to come in slow and slow down slowly, with as little use of the brakes as possible. Safely park and get out and shoot the temps... before doing anything else. All you are looking for is EVEN temperatures... not a specific number. (But you'll get so you'll notice higher than normal readings... )
Anything unusual should be investigated and/or explained. Like the sunny side will be slightly warmer than the tires that have been running in the shade.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: temps using ir temp gauge [message #128573 is a reply to message #128533] |
Sat, 04 June 2011 01:29 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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Just last Thursday I had a caliper sticking on my Colorado. When they stick they get really hot. You could not stand to hold your hand closer that about 8 inches away from the wheel. Look for temperature differences. A dragging brake will show up as a considerable difference.
It was 90 degrees out and I did not want to fix this on the road. I beat on the caliper with a hammer to loosen it up and drove back to my hanger on the back roads at 15 mph checking the front rotor and wheel every 3 or 4 miles for heat. I also used the parking brake to stop at stop signs. The problem was a bad caliper seal that allowed water to get in and rust the caliper and piston.
Bad bearings are a different story with less heat generated but they will still show up as a difference between wheels.
Side note of bearing grease. DO NOT USE Mobil ONE. I made that mistake once when I repacked all 4 rear wheels. Blaine noticed it as oil stain dripping out of the rear wheels. In ALL 4 of them the grease turned to oil and ran out of the bearings. I was lucky Blaine caught it and we repacked all 8 bearings with Valvoline Synn Power grease.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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