This could be on a Lycoming. Continentals, C-145 and 0-300 at least don't use nylon lock nuts on the back of the prop flange. And if so I'd be checking other sources for the proper torque.gahorn wrote:Per Chap 14, (Propeller) 100 series Service Manual:
Torque SIX bolts to 55-65 ft lbs.
Torque EIGHT bolts to 250 IN lbs. (21 ft lbs)
prop bolts
Moderators: GAHorn, Karl Towle, Bruce Fenstermacher
- Bruce Fenstermacher
- Posts: 10340
- Joined: Tue Apr 23, 2002 11:24 am
Re: prop bolts
CAUTION - My forum posts may be worth what you paid for them!
Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
Re: prop bolts
Not so, Bruce. My EM prop is held on with Nylock nuts.Bruce Fenstermacher wrote:This could be on a Lycoming. Continentals, C-145 and 0-300 at least don't use nylon lock nuts on the back of the prop flange. And if so I'd be checking other sources for the proper torque.gahorn wrote:Per Chap 14, (Propeller) 100 series Service Manual:
Torque SIX bolts to 55-65 ft lbs.
Torque EIGHT bolts to 250 IN lbs. (21 ft lbs)
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
- Bruce Fenstermacher
- Posts: 10340
- Joined: Tue Apr 23, 2002 11:24 am
Re: prop bolts
So your bushing, propeller nut is a nylock? Mine aren't that I recall and we are suppose to be using the same no matter 8 or 6 bolt crank according to the IPC. Is the IPC wrong?gahorn wrote:Not so, Bruce. My EM prop is held on with Nylock nuts.Bruce Fenstermacher wrote:This could be on a Lycoming. Continentals, C-145 and 0-300 at least don't use nylon lock nuts on the back of the prop flange. And if so I'd be checking other sources for the proper torque.gahorn wrote:Per Chap 14, (Propeller) 100 series Service Manual:
Torque SIX bolts to 55-65 ft lbs.
Torque EIGHT bolts to 250 IN lbs. (21 ft lbs)
CAUTION - My forum posts may be worth what you paid for them!
Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
- Arcticmayhem
- Posts: 15
- Joined: Thu Nov 13, 2014 8:58 am
Re: prop bolts
Mine is also held on with Nylock nuts. No threaded bushings. Continental O-300C with McCaulley 1A175/SFC 8043gahorn wrote:Not so, Bruce. My EM prop is held on with Nylock nuts.Bruce Fenstermacher wrote:This could be on a Lycoming. Continentals, C-145 and 0-300 at least don't use nylon lock nuts on the back of the prop flange. And if so I'd be checking other sources for the proper torque.gahorn wrote:Per Chap 14, (Propeller) 100 series Service Manual:
Torque SIX bolts to 55-65 ft lbs.
Torque EIGHT bolts to 250 IN lbs. (21 ft lbs)
Levi
1955 170B N4336B
1955 170B N4336B
Re: prop bolts
81D also had nylock nuts with an O-300-D and EM prop.
- Bruce Fenstermacher
- Posts: 10340
- Joined: Tue Apr 23, 2002 11:24 am
Re: prop bolts
Another error in the IPC.
CAUTION - My forum posts may be worth what you paid for them!
Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
Bruce Fenstermacher, Past President, TIC170A
Email: brucefenster at gmail.com
Re: prop bolts
http://www.tcmlink.com/pdf2/maintenance ... x30014.pdfBruce Fenstermacher wrote:Another error in the IPC.
Or, we're all illegal.
Re: prop bolts
So if the crank was not an original to the model, there's a possibility that that there's nuts ( C-D shafts).
Jim McIntosh..
1953 C170B S/N 25656
02 K1200RS
1953 C170B S/N 25656
02 K1200RS
Re: prop bolts
McCauley propellers should be installed in accordance with the McCauley Service Manual 730720, which is FAA-DOT approved.bagarre wrote:http://www.tcmlink.com/pdf2/maintenance ... x30014.pdfBruce Fenstermacher wrote:Another error in the IPC.
Or, we're all illegal.
Page 4-39, Fig 4-24 of that manual applies. It shows a flat washer and self-locking nut for the installation of the 1C172 (EM) propellers. Page 4-39 lists the specific parts.
TCM's manual is an ENGINE manual.
The Cessna IPC is not an approved manual...it is a parts-ordering CATALOG.
<Edit> BTW, the EM series was produced for the six bolt prop flange (Usually referred to as the ARP 502 Type I flange)
This is different in several respects to the earlier crank/prop flange. The McCauley installation instructs to use the following
torque on prop bolts:
3/8 bolt = 30-25 ft lbs
7/16 bolt = 45-40 ft lbs
1/2 bolt = 65-55 ft lbs.
I don't know why they list them in decreasing order.
Hope this helps. (BTW, Richard D Miller... if you join our Assoc'n you will have access to our MX Library, where you would find all this info on the prop, as well as the fine details of blade length, thickness/width @ each station, etc. Pretty good deal, heh?)
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
Re: prop bolts
Parts of that McCauley Service Manual 730720 have been cited in a number of threads, but a full copy does not appear to be in the MX Library. You mind uploading a full copy to the library in the Propeller Area section? I've tried to find a copy on the internet to download, but no luck.
Gene Feher
Argyle (1C3), NY
'52 170B N2315D s/n 20467 C-145-2
Experimental J3 Cub Copy N7GW O-200
Argyle (1C3), NY
'52 170B N2315D s/n 20467 C-145-2
Experimental J3 Cub Copy N7GW O-200
Re: prop bolts
The full copy is the size of an Encyclopedia (much to large to scan and post) and contains the vast majority of info not pertinent to our applications. Most of the info is directed toward repair stations and describes overhaul data, methods, tooling, inspection, service bulletins, etc.. It is also copyrighted. It may be purchased from McCauley, but the price was $375 in 2010. If you need particular info, you may email me. The pertinent info to our props is in the MX Library.gfeher wrote:Parts of that McCauley Service Manual 730720 have been cited in a number of threads, but a full copy does not appear to be in the MX Library. You mind uploading a full copy to the library in the Propeller Area section? I've tried to find a copy on the internet to download, but no luck.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
Re: prop bolts
Understood. Thanks anyway George.
Gene Feher
Argyle (1C3), NY
'52 170B N2315D s/n 20467 C-145-2
Experimental J3 Cub Copy N7GW O-200
Argyle (1C3), NY
'52 170B N2315D s/n 20467 C-145-2
Experimental J3 Cub Copy N7GW O-200
Re: prop bolts
Should prop bolt threads be lubricated with anything for proper torque? When I got my new bolts from Sabre for my Lycoming they had paraffin wax on the threads.
1952 170B
N8180A s/n 25032
N8180A s/n 25032
Re: prop bolts
The wax was for thread protection. Torque values should be clean, dry threads unless otherwise stipulated.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons.