Brake booster won't hold vacuum, should I rebuild/replace it?

larrywMember

I cobbled together this arrangement to test a booster.

I checked my adapter, using my fingertip as a plug I can quickly and easily pull and hold 25 inches on the gauge.

Now, using it on the booster, after 20 or 30 seconds of vigorous pumping, I can barely get a reading of 6 or 7 inches, which then leaks off over the course of a minute or so.

I have determined the external check valve at my adapter connection is good. And, if I push on the brake plunger rod I can hear the release of the little bit of vacuum I pulled.

I should be able to pull more than 6-7 inches on this thing, right?

Rebuild or replace? Any favorite rebuilders come to mind?

Attachments

Show

2/8/197:35 AM

Original Post

<ul id="{%=id%}ButtonGroup" class="button-group h-popup-buttons even-button-group even-1">
    <li id="{%=id%}Okay_buttonContainer"><a id="{%=id%}Okay" href="javascript:void(0);" class="button success no-margin-bottom h-alert-modal-ok-button" role="button">OK</a><script type="text/javascript">
        (function() {
            function {%=id%}Okay_click(event, data) {
            {%=id%}Popup.hide();
        }
        
                $('#{%=id%}Okay').on('click', {%=id%}Okay_click);
        })();
    </script></li></ul><a href="javascript:void(0);" class="close-reveal-modal" aria-label="Close Modal">&#215;</a><div class="last-modal-focus focus-utility-element" tabindex="0"></div>
</div>
<script type="text/javascript">
        (function() {
            {%=id%}Popup = new SS.Popup.ModalPopup('{%=id%}');
        })();
    </script>

Skip to main content

Attachments

Membership Required

Remove From Your Block List

Manage Follow Preferences

Block

Please wait...