UAL Bagsmasher
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CRJ-200 Fan Blade Lube Pic

Wed Jul 13, 2005 4:07 am

For those of you interested in what a CRJ engine looks like with its fan blades removed for a lubing, take a look.
 
EMBQA
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RE: CRJ-200 Fan Blade Lube Pic

Wed Jul 13, 2005 4:46 am

UAL-

I did several blade lubes on the Embraer 170 this spring. Since they share the same engine, I'm sure it's the same process. I was amazed at how fast you can have them all out and in. Take the spinner off, pull the pin and out come the blades.

Just an FYI for those that don't know what a Blade Lube is... Every so many hours.. I think its 800, the blades are removed and the attaching points are retreated with a baked on graphite coating. This is because the blades have a slight freedom of movement when at rest and the coating wears away as the blades move. Every engine manufacture is different so I'm not sure if this holds true to all engines......

[Edited 2005-07-12 21:49:57]
"It's not the size of the dog in the fight, but the size of the fight in the dog"
 
727EMflyer
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RE: CRJ-200 Fan Blade Lube Pic

Wed Jul 13, 2005 7:08 am

Neat photo, thanks!!!!
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SkydrolBoy
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RE: CRJ-200 Fan Blade Lube Pic

Wed Jul 13, 2005 9:11 am

Heres some pics from a RB211 Fan Lube I Did on a 757-200
http://i11.photobucket.com/albums/a152/skydrolboy/DSC00222.jpg
http://i11.photobucket.com/albums/a152/skydrolboy/DSC00220a.jpg
http://i11.photobucket.com/albums/a152/skydrolboy/DSC00218.jpg
 
troubleshooter
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RE: CRJ-200 Fan Blade Lube Pic

Wed Jul 13, 2005 9:38 am

Thanks for the cool pics, mates!
This job sucks!!! I love this job!!!
 
UAL Bagsmasher
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RE: CRJ-200 Fan Blade Lube Pic

Wed Jul 13, 2005 10:45 am

This lube was a special call out for a high vibration reading. It seemed to help.
 
242
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RE: CRJ-200 Fan Blade Lube Pic

Wed Jul 13, 2005 10:49 am

I've done many fan blade lubes on GE CF6 engines, so I know the drill. Each blade costs around $10k, and there are 38 per engine. I always tried to be extra careful when handling them.  bigthumbsup 
 
UAL Bagsmasher
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RE: CRJ-200 Fan Blade Lube Pic

Wed Jul 13, 2005 1:12 pm

EMBQA, I didn't know the E-170 ran CF-34's. Learn something new everyday I guess.  Smile
 
aogdesk
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RE: CRJ-200 Fan Blade Lube Pic

Wed Jul 13, 2005 1:59 pm

Anyone ever do a lube on a 110 inch PW engine?? Those blades are huge!!
 
twincommander
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RE: CRJ-200 Fan Blade Lube Pic

Wed Jul 13, 2005 6:02 pm

About how much time does it take to do one of those lubes?

SkydrolBoy:

what's the type of that commander in the background... I know. IM pathetic :p
 
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HAWK21M
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RE: CRJ-200 Fan Blade Lube Pic

Wed Jul 13, 2005 9:26 pm

Fantastic Pics.
Wish there was a seperate Aircraft under Mx Pics section on Anet.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
aloges
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RE: CRJ-200 Fan Blade Lube Pic

Wed Jul 13, 2005 9:54 pm

Thanks for the pics! There's something new in this forum to be learnt every day.

Quoting EMBQA (Reply 1):
This is because the blades have a slight freedom of movement when at rest and the coating wears away as the blades move.

Isn't that the reason for the rattling noises the engine will make when windmilling, or after a pilot gives it a push on the walkaround?
Don't cry because it's over, smile because it happened.
 
A/c train
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RE: CRJ-200 Fan Blade Lube Pic

Wed Jul 13, 2005 11:39 pm

Aloges, the freedom of movement your talking about there with the 'clanking' is caused by the midspan shrouds hitting eachother as they go over the 12 o'clock position, at high rotational speeds the blades will lock out centrifugally and so the noise is unheard, this is why you must lube the sides of the shrouds aswell !!
With wide chord fan blades fitted too engines pictured above, the lube is an anti-frcition coating using molykote applied too the blade roots and the blade slots, if you've ever fitted wide chord fan blades, you'll notice there is not as much room in the blade slots as with the older CFMs and CF6's, they are a much tighter, they sometimes need to be 'encouraged' in with a soft blow mallet !!
Twin commander- depends on which engine you lubing the blades on, an RB211, will take around 4 hours if you need to do it quick !, a CF6-80C2-A5 has many component parts making up the blade set which all need to be lubed so I would say atleast 6 hours for a CF6.
UAL Bagmasher, blade lube is in the troubleshoot for high vibe after fan trim balance, sometimes easier just too go for a fan blade lube, can spend hours down an engine run bay, taking the spinner/fairing off moving weights around.
 
air2gxs
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RE: CRJ-200 Fan Blade Lube Pic

Thu Jul 14, 2005 1:40 am

The fan lube on a CF6 comes in at about 15 man-hours. Since we added it to our line maintenace program, fan vibration problems have all but disappeared. When we do have a problem, we lube and it easily knocks a unit and-a-half off the indication (unless something is really wrong with the engine).
 
SkydrolBoy
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RE: CRJ-200 Fan Blade Lube Pic

Thu Jul 14, 2005 3:04 am

Twin Commander,

Thats a 690 in the background, To do the Fan Lube on the RB211 the fastest I've done it was just 4hrs including a lunch break, but we were doing it outside on the ramp in the middle of the summer, so the graphite spray was drying as soon as it hit the fan blades, but a normal fan lube done in the hangar will take about 6-8hrs.
 
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HAWK21M
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RE: CRJ-200 Fan Blade Lube Pic

Thu Jul 14, 2005 5:11 pm

Quoting Air2gxs (Reply 13):
The fan lube on a CF6 comes in at about 15 man-hours.

How Frequent is the Check/Lubrication done
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
CRJIAD
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RE: CRJ-200 Fan Blade Lube Pic

Fri Jul 15, 2005 1:02 am

UAL Bagsmasher do you remember the Reg. # on this aircraft? I think this A/C may have been in IAD. 440 I think it was but maybe not.
 
UAL Bagsmasher
Topic Author
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RE: CRJ-200 Fan Blade Lube Pic

Fri Jul 15, 2005 3:47 am

CRJIAD, that number sounds familiar.
 
salim
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RE: CRJ-200 Fan Blade Lube Pic

Fri Jul 15, 2005 4:10 am

I would love to have one of these blades on my desk...they are really pices of art...
More seriously do you know if it's possible to buy on comming from an decomissoned engine, or they are all recycled??
 
LMP737
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RE: CRJ-200 Fan Blade Lube Pic

Fri Jul 15, 2005 7:00 am

Quoting A/c train (Reply 12):
UAL Bagmasher, blade lube is in the troubleshoot for high vibe after fan trim balance, sometimes easier just too go for a fan blade lube, can spend hours down an engine run bay, taking the spinner/fairing off moving weights around.

Spent almost an entire night doing that on a RB211. Run the engine, shut it down, move the wieghts around, draw those silly circles on the graph. Then repeat the whole process ove again.. The final fix ended up being a blade lube.
Never take financial advice from co-workers.
 
777wt
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RE: CRJ-200 Fan Blade Lube Pic

Fri Jul 15, 2005 8:15 am

Quoting Salim (Reply 18):

Try Ebay Big grin

I see retired or used fan and turbine blades being sold there. Some of them are polished.
 
aloges
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RE: CRJ-200 Fan Blade Lube Pic

Fri Jul 15, 2005 9:12 am

Quoting A/c train (Reply 12):

Thank you! I had forgotten I had asked, that's why it took me two days.
Don't cry because it's over, smile because it happened.
 
twincommander
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RE: CRJ-200 Fan Blade Lube Pic

Fri Jul 15, 2005 12:55 pm

SkydrolBoy

Im going to bother you again about that commander and I should have asked this before...

Those look like the old hamilton-standard propellers that were put on the century converted 681s.

If you have time... Could you snap a photo or get the info off the data tag?

We just did an inspection/lube of the fan blades of a G-IV, C/N 1051, N919CT. It took us about 4 days with one person... But I think they had to do some NDTs on other items before they threw her back together.
 
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HAWK21M
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RE: CRJ-200 Fan Blade Lube Pic

Fri Jul 15, 2005 2:23 pm

Quoting LMP737 (Reply 19):
Spent almost an entire night doing that on a RB211. Run the engine, shut it down, move the wieghts around, draw those silly circles on the graph. Then repeat the whole process ove again.. The final fix ended up being a blade lube.

Isn't there a software Available that feed in the Weights & gives the best position of assy in terms of Balance,whicvh needs to be followed in case of reinstallation.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
LMP737
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RE: CRJ-200 Fan Blade Lube Pic

Thu Jul 21, 2005 8:16 am

Quoting HAWK21M (Reply 23):
Isn't there a software Available that feed in the Weights & gives the best position of assy in terms of Balance,whicvh needs to be followed in case of reinstallation.
regds
MEL

Not on the 757/RB211. You have to do it the old fashioned way. Protractor, vibe readings and a graph.
Never take financial advice from co-workers.
 
DL_Mech
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RE: CRJ-200 Fan Blade Lube Pic

Thu Jul 21, 2005 5:48 pm

Quoting HAWK21M (Reply 23):
Isn't there a software Available that feed in the Weights & gives the best position of assy in terms of Balance,whicvh needs to be followed in case of reinstallation.

At DL, we use the MTI-4100. Very easy to use (even on the RB-211), with no plots or graphs required.

http://www.mtiinstruments.com/aviation/products/pbs-4100.html
This plane is built to withstand anything... except a bad pilot.
 
LMP737
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RE: CRJ-200 Fan Blade Lube Pic

Thu Jul 21, 2005 11:11 pm

Quoting DL_Mech (Reply 25):
At DL, we use the MTI-4100. Very easy to use (even on the RB-211), with no plots or graphs required.

Another case of AA not wanting to spend the money on new "fandangled" equipment.
Never take financial advice from co-workers.
 
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HAWK21M
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RE: CRJ-200 Fan Blade Lube Pic

Fri Jul 22, 2005 12:56 pm

Quoting LMP737 (Reply 26):
Another case of AA not wanting to spend the money on new "fandangled" equipment

Thats Surprising considering the Time & Fuel saved.Overall it would make a big difference to use Modern Equipment.
Whats AA reasoning.
regds
MEL
I may not win often, but I damn well never lose!!! ;)
 
LMP737
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RE: CRJ-200 Fan Blade Lube Pic

Sat Jul 23, 2005 5:00 am

Quoting HAWK21M (Reply 27):
Thats Surprising considering the Time & Fuel saved.Overall it would make a big difference to use Modern Equipment.
Whats AA reasoning.
regds
MEL

American on one hand is quite willing to spend the money to maintain their aircraft. On the other hand they are not into buying things that are "optional". Especially now a days. They might actually have it for the engine shops down in Tulsa and AFW but not where I work.
Never take financial advice from co-workers.

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