90'silversc
Registered User
just got the accumulator in the other day and before we try and put it in is there any tricks or anything special that needs to be done to switch them or is it pretty straighforward? thanks guys
Good news is, you don't have to bleed the system when changing out the accumulator.
I recommend removing at least the driver's side cowling to help gain access, etc. You'll need the proper driver to engage the top of the unit (8mm?) - clean out that hole good first so you have proper purchase when turning.
Remove wipers, rubber trim, cowling (screws from top and one horizontal inside) etc. first to give yourself more room to work...
Pay attention to these points:
• Be sure to bleed down/off any residual pressure before removing the old accumulator. It can take dozens of pumps on the brake pedal (key off of course) to get this done, so take this seriously. Wrap a towel you don't need around the base of the accumulator to catch any spray that may result from remaining pressurized fluid.
• Do not leave the system open and use care to not let any dirt/debris fall into the open port. Have the replacement accumulator, tools etc. ready to go.
• Be sure the replacement accumulator has a fresh o-ring...coat it with clean brake fluid before installing.
• Tighten the replacement accumulator as tight as you can with normal tools. Do not over-torque. Start it with your hands to be sure to properly engage the threads and do not force it.
• When the replacement is installed, fill the brake fluid reservoir to the top with the correct fluid, replace the cap and turn the ignition key to run. It can take a surprising amount of brake fluid to fill an accumulator so have plenty on hand - don't let this procedure empty the reservoir. Wait for the motor to stop running and the light(s) to go out (1 minute or so?), indicating that pressure has built up and shut off the ignition. Check for any lights and if they don't go out stop...don't let the motor run too long to prohibit damage from overheating.
• Check for leaks and repeat the key on procedure to confirm the pressure is holding and building as normal...check for proper warning light operation again.
• Check the brake fluid level with key off and the unit charged....add or remove any fluid required to set the level at the indicated marks.
• Test drive with caution until you feel the system is operating properly. Watch the level for a day or so and re-check for leaks etc. before enjoying your work.
Replacing an accumulator is a relatively straight forward procedure, esp. after doing it once. Just like any brake work, tho, it is important to use care in the process.
This isn't necessary if your car still has the plastic keyways for the wiper locations Of course, most don't.An additional trick is to mark the windshield before removing the wipers so you can get them back in the same place and install them before turning the ignition back on. .
This isn't necessary if your car still has the plastic keyways for the wiper locations Of course, most don't.
Where can I get an accumulator in Canada or USA?
What kind of strap did you use?
The type that can remove oil filters. Don't go nuts, just tight enough it won't come loose on it's own later.
The ones that have a metal bar you can get a 1/2" socket extension into work for me.
https://www.ebay.com/itm/GearWrench...TRC2.A0.H0.Xoil+folter+strap+wrench.TRS0.TSS0
...as opposed to the ones you lever by hand, since there's not much room to work.
• Be sure the replacement accumulator has a fresh brake fluid safe (EPDM) o-ring (Size: -111) ...coat it with clean brake fluid before installing.