I need replacement rings for the suspension. - MXL 990 Professional Microphone

If You are referring to the Air suspension System then You Have a Leak in the Line diverter Bell, It look like a bell with 5 r 6 1/4 in Plastic Lines coming out of it, try Spraying it With Soapy Water to see any air Bubbles, if this is the Case replace the Bell or the O-rings on the Lines, or both ,also Check the Lines going into the suspension Bags, If the Bags themselves Have any Cracks in them then You need to replace the Bags, Fairly Expensive, and Unless You are a Tech Dont try this @ Home since Major Bodily Injury can Occur, If Not following the Correct Procedure's to replace the Bag Suspension SYStem

MAY CHECK TO SEE IF LINES ARE PLUGGED WITH DEBRIE OR SUGGEST DISCONNECTING THE AIR LINES WITH VEHICLE OFF START VEHICLE MAKE SURE AIR FLOW IS COMMING OUT BOTH LINES SHUT OFF AUTO RECONNECT LINES THIS SHOULD BLEED THE SYSTEM THEN RESTART AUTO.

You may have a crack in a line somewhere. You hear it cycling while driving because the height sensor is telling it to lift because it's loosing air somewhere. I'd replace those o-rings first.

It could be one of two things.
1.Suspension damper rods need replacing or
2.The bowl has lost its ballast water to balance the load
The bowl has two ballast rings top and bottom
with some water in them.
If this water is gone from the rings the bowl will go out of balance all the time.Replace the bowl if this is the case.

CHECK AIR SPRINGS SOLENOID O- RINGS FOR LEAKS.LISTEN FOR AIR LEAKS AROUND EACH AIR SPRING. WHILE CAR ON GROUND. IF YOU SPOT A LEAK.TURN OFF AIR SUSPENSION OFF FIRST.THEN SAFELY RAISE VECHICLE.REPLACE ALL AIR SPRINGS SOLENOID O - RINGS BUT FIRST BLEED AIR OUT OF AIR SPRINGS FIRST BY REMOVING AIR SPRING SOLENOID CLIP THEN SLOWLY PULL AIR SPRING SOLENOID TO SECOND STOP DONT PULL ALL THE WAY OUT.TO SAFELY LOCK OUT VECHICLE REMOVE NEGATIVE BATTERY CABLE TO KEEP AIR COMPRESSOR FROM TURNING ON.YOU DONT WANT AIR IN SPRINGS WITH VECHICLE IN THE AIR. DONT TRY REMOVE AIR SPRING UNTIL ALL THE AIR IS OUT.YOU NEED A FORD TESTER TO DO A FUNCTIONAL TEST ON AIR SPRINGS.

REMOVAL & INSTALLATION
CAUTION
Fuel injection systems remain under
pressure, even after the engine has been turned OFF. The fuel system pressure
must be relieved before disconnecting any fuel lines. Failure to do so may
result in fire and/or personal injury.

1. If equipped with air suspension, the air suspension switch, located on a
   side panel of the trunk compartment, must be turned to the OFF position
   before raising the vehicle.
   
2. Disconnect the negative battery cable.
   
3. Relieve fuel system pressure using the recommended procedure.
   
4. Raise and safely support the vehicle.
   
5. Remove the fuel tank from the vehicle and place on a suitable work bench.
   
6. Remove any dirt that has accumulated around the fuel pump retaining flange
   so it will not enter the tank during pump removal and installation.
   
7. On 1988-94 models, turn the fuel pump locking ring counterclockwise and
   remove the locking ring.
   
8. On 1995-00 models, remove the retaining bolts around the perimeter of the
   fuel pump module.
   
9. Remove the fuel pump/sending unit assembly. Remove and discard the seal
   ring.
   To install:
   
   
10. Clean the fuel pump mounting flange, fuel tank mounting surface and seal
    ring groove.
    
11. Apply a light coating of grease on a new seal ring to hold it in place
    during assembly and install it in the seal ring groove.
    
12. Install the fuel pump/sending unit assembly carefully to ensure the filter
    is not damaged. Make sure the locating keys are in the keyways and the seal ring
    remains in the groove.
    
13. Hold the pump assembly in place and install the locking ring finger-tight.
    Make sure all the locking tabs are under the tank lock ring tabs.
    
14. Rotate the locking ring clockwise until the ring is against the stops.
    
15. Install the fuel tank into the vehicle.
    
16. Lower the vehicle.
    
17. If equipped with air suspension, turn the air suspension switch to the
    ON position.
    
18. Add a minimum of 10 gallons of fuel to the tank and check for leaks.
    
19. Reconnect the negative battery cable.
    
20. Turn the ignition switch to the RUN position several times to
    pressurize the fuel system. Check for fuel leaks and correct as necessary.
    
21. Start the engine and check for leaks.
    
22. Road test the vehicle and check for proper operation.
    
    
    
    
    
    Fig. 1: The fuel pump is located in the fuel tank. On some
    models it can be viewed from the side as shown here
    
    
    
    
    
    
    
    Fig. 2: Electric fuel pump removal
    
    
    
    
    
    
    
    Fig. 3: Fuel pump locking ring installation
    
    

there really is not a way to "lower" the back suspension but you can make it softer by loosening the rings for the spring around the shock there are two rings both next to each other one it to keep the other/bottom one tight so you will need to either get the special to to loosen them or use a big flat head screw driver and a small hammer and tap the teeth on the ring to loosen you will tap from right side of bike on front of shock once you have loosened them the top ring will need to be tightened back down on the bottom ring hope this helps message if you need anything else good luck

Ok, two possibles here. One is that your rear spheres have lost their gas. (Most likely, especially given age of car). Easy enough fix, and the spheres can be got from the likes of allmake for about 30 quid each. Other possibility depends on a couple of factors: if the car doesnt rise at all, after starting or changing the ride height, your main reservoir is probably at fault. If it does rise, but only at the front, then there is a fairly common issue within the levelling system. i cant remember exactly, but there is a ring that needs replacing. Give a citroen dealer a ring...they may even explain it over the phone...

1. Shock absorbers are shot
2. Add spring pressure to shocks
3. Swingarm needs to be greased
4. All of the above

If the shocks are shot then you will need to find replacements. If I recall correctly, the bottom half of the shock had an adjustment ring that turned to add spring pressure. There were 4 settings indexed in the ring. The swing arm may need cleaning and grease. If stiff, it could be the problem. You may need to remove the wheel and the shocks to get the swingarm off for adding grease at the hinge point.

inspect the o-rings in the air bag. you may of pinched the o-ring during installation.