VansAirForceForums  
Home > VansAirForceForums

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

- Today's Posts | Insert Pics


Go Back   VAF Forums > Main > RV General Discussion/News
Register FAQ Members List Calendar Today's Posts

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 12-06-2012, 09:26 AM
crabandy crabandy is offline
 
Join Date: Jan 2010
Location: Ottawa, Ks
Posts: 2,188
Default MA4-5 sticky throttle...

I just pulled my MA4-5 out of the box, has a "yellow tag" stating overhauled per facet (precision) service manual 7-1-09. Just looking over it, the throttle lever "sticks" in both directions with the butterfly about 1/3 open as well as closing the last 1/16th. I found some overhaul manuals online to look over, Is it time for me to go to Marvel Schebler school? Maybe just slide out the throttle lever/rod and Sand/ ream / lube? Suggestions?
Thanks,
Andy
Reply With Quote
  #2  
Old 12-06-2012, 10:56 AM
fixnflyguy fixnflyguy is offline
 
Join Date: Jan 2006
Location: Winston-Salem, N.C.
Posts: 1,210
Default How "sticky?"

What is sticky to one person may be regarded as OK to another. Remember, ther is significant leverage in the throttle system, and you may not even notice it once its hooked up. The accelerator pump will create a fair amount of resistance prior to having fuel through it, and may be what you are actually feeling. I have re-built many, and they should be a little tight after the rebuild..mostly due to the accelerator pump...get another opinion before you think about doing any re-work.
__________________
Bill E.
RV-4/N76WE
8A7 / Advance NC
Reply With Quote
  #3  
Old 12-06-2012, 11:26 AM
crabandy crabandy is offline
 
Join Date: Jan 2010
Location: Ottawa, Ks
Posts: 2,188
Default

Thanks Bill, very well could be the accelerator pump I've only rebuilt automotive/motorcycle carbs before. I'll get an A&P to look it over.

Another question for anyone, the flange holding the Bowl Vent Strainer Screen Housing is warped. Should I
a. Leave it alone
b. remove, hammer flat and reinstall
c. remove, turn inside-out and reinstall
d. order a new flange



Last edited by crabandy : 12-06-2012 at 05:17 PM.
Reply With Quote
Reply



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 11:32 PM.


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.