VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #1  
Old 01-20-2019, 10:35 AM
bryanflood's Avatar
bryanflood bryanflood is offline
 
Join Date: Aug 2006
Posts: 111
Default Main bearings

Does anyone know why there are so many different crankshaft bearings offered for Lycoming engines? The rebuild manual I have lists 3 different parts numbers for my crankshaft bearings.

18D19394
LW-16047 (alternate)
LW-11021 (alternate)

It seems like Lycoming is saying that you can just use whatever you want, or is there a preference to a part number? I noticed superior also says that you can use part number

SL11020


Can anyone help me figure out if there is some reasoning to this?

Thanks,

Bryan
Reply With Quote
  #2  
Old 01-20-2019, 09:43 PM
Tommy123 Tommy123 is offline
 
Join Date: Jul 2018
Location: Naples fl
Posts: 140
Default

Superseded numbers or may be oversized part numbers.
Reply With Quote
  #3  
Old 01-21-2019, 12:02 AM
az_gila's Avatar
az_gila az_gila is offline
 
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 9,897
Smile

LW-16047 is superseded by LW-11021

http://nebula.wsimg.com/670c250fc9d9...&alloworigin=1

The 18D19394 is superseded by 18D26096

https://www.lycoming.com/sites/defau...12-Sup%201.pdf

Oversize bearing have a dash number added with the oversize amount.

If your part catalog calls out the earlier number then either that number or the superseded number can be used.
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
Reply With Quote
  #4  
Old 01-22-2019, 03:56 AM
bryanflood's Avatar
bryanflood bryanflood is offline
 
Join Date: Aug 2006
Posts: 111
Default Main bearings

Thanks Gil,

Exactly what i needed!

Bryan
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 04:14 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.