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CRJ-200 Fan Blade Lube Pic  
User currently offlineUAL Bagsmasher From United States of America, joined Sep 1999, 2148 posts, RR: 10
Posted (9 years 5 months 2 weeks 5 days 1 hour ago) and read 7790 times:

For those of you interested in what a CRJ engine looks like with its fan blades removed for a lubing, take a look.


28 replies: All unread, showing first 25:
 
User currently offlineEMBQA From United States of America, joined Oct 2003, 9364 posts, RR: 11
Reply 1, posted (9 years 5 months 2 weeks 5 days 1 hour ago) and read 7777 times:

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"
User currently offline727EMflyer From United States of America, joined Mar 2005, 547 posts, RR: 0
Reply 2, posted (9 years 5 months 2 weeks 4 days 22 hours ago) and read 7716 times:

Neat photo, thanks!!!!
f
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User currently offlineSkydrolBoy From Canada, joined Sep 2003, 341 posts, RR: 2
Reply 3, posted (9 years 5 months 2 weeks 4 days 20 hours ago) and read 7689 times:

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


User currently offlineTroubleshooter From Germany, joined Feb 2005, 423 posts, RR: 4
Reply 4, posted (9 years 5 months 2 weeks 4 days 20 hours ago) and read 7674 times:

Thanks for the cool pics, mates!


This job sucks!!! I love this job!!!
User currently offlineUAL Bagsmasher From United States of America, joined Sep 1999, 2148 posts, RR: 10
Reply 5, posted (9 years 5 months 2 weeks 4 days 19 hours ago) and read 7663 times:

This lube was a special call out for a high vibration reading. It seemed to help.

User currently offline242 From United States of America, joined Oct 2000, 498 posts, RR: 1
Reply 6, posted (9 years 5 months 2 weeks 4 days 19 hours ago) and read 7662 times:

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 

User currently offlineUAL Bagsmasher From United States of America, joined Sep 1999, 2148 posts, RR: 10
Reply 7, posted (9 years 5 months 2 weeks 4 days 16 hours ago) and read 7633 times:

EMBQA, I didn't know the E-170 ran CF-34's. Learn something new everyday I guess.  Smile


User currently offlineAogdesk From United States of America, joined Jun 2004, 935 posts, RR: 3
Reply 8, posted (9 years 5 months 2 weeks 4 days 16 hours ago) and read 7621 times:

Anyone ever do a lube on a 110 inch PW engine?? Those blades are huge!!

User currently offlineTwinCommander From United States of America, joined Apr 2005, 161 posts, RR: 0
Reply 9, posted (9 years 5 months 2 weeks 4 days 12 hours ago) and read 7590 times:

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


User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 10, posted (9 years 5 months 2 weeks 4 days 8 hours ago) and read 7557 times:

Fantastic Pics.
Wish there was a seperate Aircraft under Mx Pics section on Anet.
regds
MEL



Think of the brighter side!
User currently offlineAloges From Germany, joined Jan 2006, 8772 posts, RR: 42
Reply 11, posted (9 years 5 months 2 weeks 4 days 8 hours ago) and read 7552 times:

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?



Walk together, talk together all ye peoples of the earth. Then, and only then, shall ye have peace.
User currently offlineA/c train From United Kingdom, joined Jun 2001, 501 posts, RR: 4
Reply 12, posted (9 years 5 months 2 weeks 4 days 6 hours ago) and read 7532 times:

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.


User currently offlineAir2gxs From , joined Dec 1969, posts, RR:
Reply 13, posted (9 years 5 months 2 weeks 4 days 4 hours ago) and read 7503 times:

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).

User currently offlineSkydrolBoy From Canada, joined Sep 2003, 341 posts, RR: 2
Reply 14, posted (9 years 5 months 2 weeks 4 days 3 hours ago) and read 7489 times:

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.


User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 15, posted (9 years 5 months 2 weeks 3 days 12 hours ago) and read 7393 times:

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



Think of the brighter side!
User currently offlineCRJIAD From United States of America, joined Jun 2005, 32 posts, RR: 0
Reply 16, posted (9 years 5 months 2 weeks 3 days 5 hours ago) and read 7355 times:

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.

User currently offlineUAL Bagsmasher From United States of America, joined Sep 1999, 2148 posts, RR: 10
Reply 17, posted (9 years 5 months 2 weeks 3 days 2 hours ago) and read 7323 times:

CRJIAD, that number sounds familiar.

User currently offlineSalim From Lebanon, joined Jun 2001, 303 posts, RR: 1
Reply 18, posted (9 years 5 months 2 weeks 3 days 1 hour ago) and read 7312 times:

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??


User currently offlineLMP737 From , joined Dec 1969, posts, RR:
Reply 19, posted (9 years 5 months 2 weeks 2 days 23 hours ago) and read 7291 times:

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.


User currently offline777WT From United States of America, joined Jan 2005, 877 posts, RR: 1
Reply 20, posted (9 years 5 months 2 weeks 2 days 21 hours ago) and read 7280 times:

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.


User currently offlineAloges From Germany, joined Jan 2006, 8772 posts, RR: 42
Reply 21, posted (9 years 5 months 2 weeks 2 days 20 hours ago) and read 7270 times:

Quoting A/c train (Reply 12):

Thank you! I had forgotten I had asked, that's why it took me two days.



Walk together, talk together all ye peoples of the earth. Then, and only then, shall ye have peace.
User currently offlineTwinCommander From United States of America, joined Apr 2005, 161 posts, RR: 0
Reply 22, posted (9 years 5 months 2 weeks 2 days 17 hours ago) and read 7237 times:

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.


User currently offlineHAWK21M From India, joined Jan 2001, 31712 posts, RR: 56
Reply 23, posted (9 years 5 months 2 weeks 2 days 15 hours ago) and read 7230 times:

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



Think of the brighter side!
User currently offlineLMP737 From , joined Dec 1969, posts, RR:
Reply 24, posted (9 years 5 months 1 week 3 days 21 hours ago) and read 7080 times:

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.


25 Post contains links DL_Mech : 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/
26 LMP737 : Another case of AA not wanting to spend the money on new "fandangled" equipment.
27 HAWK21M : Thats Surprising considering the Time & Fuel saved.Overall it would make a big difference to use Modern Equipment. Whats AA reasoning. regds MEL
28 LMP737 : 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 "opti
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