{"id":12903,"date":"2022-05-20T21:40:30","date_gmt":"2022-05-21T01:40:30","guid":{"rendered":"https:\/\/agaaga.khoolbrew.ca\/?p=12903"},"modified":"2022-05-20T21:43:07","modified_gmt":"2022-05-21T01:43:07","slug":"more-bbq-repairs","status":"publish","type":"post","link":"https:\/\/agaaga.khoolbrew.ca\/index.php\/2022\/05\/20\/more-bbq-repairs\/","title":{"rendered":"More BBQ Repairs"},"content":{"rendered":"\n
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Broil-Mate model 735269<\/span><\/p><\/figcaption><\/figure>\n\n\n\n

Our barbecue is now at least 11 years old. Last year we invested >$200 refurbishing it<\/a>, so when it ran into trouble again recently we still wanted to repair rather than replace.<\/p>\n\n\n\n

This time around, there were multiple problems:<\/p>\n\n\n\n

  1. The control knob for the right burner broke off.<\/li>
  2. One of the igniter electrodes was dangling down inside the BBQ (not visible in the picture – I’d already put it back into place).<\/li>
  3. The rightmost burner wasn’t working properly. There was a roaring flame right near the front of the barbecue, and nothing further down the tube.<\/li><\/ol>\n\n\n\n

    It turns out the last two problems were related. There’s something called a collector box, which is a metal frame that holds the burner tubes in the right place. This ensures that the end of the burner tube lines up with the gas valve. The collector box is supported by two ceramic posts, which are also<\/strong> the igniter electrodes!<\/p>\n\n\n\n

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    Electrode, with integrated ceramic post to support the collector box.<\/figcaption><\/figure><\/div>\n\n\n\n

    At first when I removed the collector box and saw the ceramic posts that had been supporting it, I wasn’t sure if they were really the igniter electrodes. Well, I was pretty sure, given they have wires feeding into them and I remember those wires from when I replaced the igniter switch a couple years ago. So I took a set of metal tongs, touched them to the tip of the electrode, and hit the igniter switch. Yow! Suffice to say, I was shocked by how powerful the igniter is!<\/p>\n\n\n\n

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    Burner tubes going through the collector box. You can see the two (dirty white) electrodes holding it up.<\/figcaption><\/figure>\n\n\n\n
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    See how the hole around the base of the electrode is corroded.<\/figcaption><\/figure>\n\n\n\n

    The holes that the electrodes pass through are sufficiently corroded that the electrodes can just fall out. When this happens, the collector box drops out of place, and the burner tubes are no longer lined up with the valves. In that state, the gas just shoots all over the place, instead of travelling down the tube.<\/p>\n\n\n\n

    So, how to repair it? The electrodes need to be fixed in the correct position, using something that’ll withstand the heat inside the BBQ (say max 500F usually, up to 600F when we’re burning crud off the grills). Well, let’s see what’s in the glue box \ud83d\ude42<\/p>\n\n\n\n

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    A glue for every occasion. Not in the picture is the 4L or so of West System epoxy that’s waiting patiently for upcoming boat repairs.<\/figcaption><\/figure>\n\n\n\n

    There are a few likely candidates in there:<\/p>\n\n\n\n