AS 189 compressor slow leak

TonyBv9

SMF Poster
Joined
Feb 27, 2012
Messages
333
Likes
62
Points
28
#1
Hi everyone,

I've been away from modelling for a year, but I recently got the urge back and started a nice little Tamiya BF109. My compressor is an AS189, that I bought maybe 2yrs ago from the shop, and it's had only light use.
When I started it up after a year of being stored in the box in my wardrobe, I noticed the sound of air escaping, and the motor kicks in much more frequently to keep pace with the leak. I traced it to the non return valve:


1519833019103.png

A bit of googling points to the solenoid valve, which costs about £10. Any other ideas? It was working perfectly before. Is there a rubber diaphragm or similar that may be dried out?
Thanks for any suggestions.

Tony
 

stillp

SMF Poster
Joined
Nov 17, 2016
Messages
1,204
Likes
648
Points
113
First Name
Peter
#4
If it's knackered, try a squirt of WD40 in it, you've nothing to lose!

Pete
 
Joined
Oct 19, 2015
Messages
126
Likes
47
Points
28
Location
Doncaster
First Name
James
#5
On mine i had a slow leak and i found that when id moved it the nut on the tube connecting the compressor to the tank was lose messed with it for 10 amd it stoped just a sugestion
 

colin m

SMF Poster
Joined
Dec 26, 2008
Messages
5,076
Likes
2,109
Points
113
Location
Stafford, UK
First Name
Colin
#6
The same solenoid failed on mine some years ago. Changed it (easy job) and all has been well since then.
 

TonyBv9

SMF Poster
Joined
Feb 27, 2012
Messages
333
Likes
62
Points
28
#7
HI Colin. Were the symptoms the same when the solenoid failed? I'm not worried about fixing it myself, I just want to make sure I get the right part.
 

John

Administrator
Staff member
Administrator
Moderator
Joined
Mar 4, 2004
Messages
3,637
Likes
510
Points
113
#8
If it is the solenoid, I have a spare one I will let you have at a good price.
 

colin m

SMF Poster
Joined
Dec 26, 2008
Messages
5,076
Likes
2,109
Points
113
Location
Stafford, UK
First Name
Colin
#10
HI Colin. Were the symptoms the same when the solenoid failed? I'm not worried about fixing it myself, I just want to make sure I get the right part.
It was a while ago, but yes, the air was escaping out of the back. I think you can put your finger over it and feel the air escaping.
 

TonyBv9

SMF Poster
Joined
Feb 27, 2012
Messages
333
Likes
62
Points
28
#12
Thanks to John at the shop for supplying the spare part at a good price. The compressor works fine again.
 

Ian M

GB Mod
Staff member
Administrator
Moderator
Joined
Dec 14, 2008
Messages
11,770
Likes
2,104
Points
113
Location
Falster, Denmark
First Name
Ian
#13
Glad that you got it sorted, I find that a lot of leaks can be resolved with either silicon spray, like the stuff you put on car door seals, and PTFT tape.
Silicon spray on rubber gaskets and PTFT tape to re-tighten connections.
 
Top