CMI Air Actuated Mufflers
03-01-2019, 02:51 PM
#21
Registered
Anyone have these? Quick question. When the boat is off and you close the flapper how long does the flapper stay closed. I’m bench testing mine and it only stays closed a few seconds after closing them if the compressor is shut off. I didn’t know if the engine was running if that would help them stay closed.
03-01-2019, 04:07 PM
#22
That's an indication of a leaking cylinder or leaking hose connection. Run some soapy water over each connection as you run the pump. You'll easily find the leak. They should remain closed overnight.
03-01-2019, 06:07 PM
#24
Registered
Anyone have these? Quick question. When the boat is off and you close the flapper how long does the flapper stay closed. I’m bench testing mine and it only stays closed a few seconds after closing them if the compressor is shut off. I didn’t know if the engine was running if that would help them stay closed.
I put a check valve inline so the air did not bleed back through the pump.
Last edited by Rookie; 03-01-2019 at 06:15 PM.
03-01-2019, 09:44 PM
#25
Charter Member # 55
Charter Member
Anyone have these? Quick question. When the boat is off and you close the flapper how long does the flapper stay closed. I’m bench testing mine and it only stays closed a few seconds after closing them if the compressor is shut off. I didn’t know if the engine was running if that would help them stay closed.
FYI, the ends on the actuator cylinders will unscrew and there are O rings inside that can be replaced.
03-02-2019, 05:23 AM
#26
Registered
i had to replace my cylinders as both were cracked next to the fitting. It is really thin in that spot, bad design. I replaced them with Bimbas, 1/3 the price and all stainless/aluminum construction. Work great. My solenoid was leaking.
03-03-2019, 10:04 PM
#28
Registered
