{"id":171,"date":"2015-04-29T18:04:38","date_gmt":"2015-04-29T10:04:38","guid":{"rendered":"https:\/\/projectkeira.com\/home\/?p=171"},"modified":"2021-09-26T05:05:15","modified_gmt":"2021-09-25T21:05:15","slug":"how-to-rear-axle-vent-mod","status":"publish","type":"post","link":"https:\/\/www.projectkeira.com\/home\/how-to-rear-axle-vent-mod\/","title":{"rendered":"How-To: Rear Axle Vent Mod"},"content":{"rendered":"
\"\"
Here’s my version of the common rear differential breather mod.<\/span><\/figcaption><\/figure>\n

TOOLS\/PARTS USED<\/strong><\/p>\n

    \n
  1. Toyota OEM Union 1\/4″, 90404-51026, $5.94*<\/li>\n
  2. Mann Complete In-Line Fuel Filter, 33001, $4.99<\/li>\n
  3. Toyota OEM plug, Breather 1\/4″, 90930-03136, $5.27<\/li>\n
  4. 1\/4″ Fuel Line Hose, $5.06<\/li>\n
  5. 1\/4″ Hose Clamps, $2.99<\/li>\n
  6. 14mm open wrench<\/li>\n
  7. Clean rag w\/degreaser<\/li>\n
  8. A few black zip ties<\/li>\n<\/ol>\n

    The whole job literally takes less than 10 minutes, and parts came out to just under $20 for everything. This is an easy job, you don’t even have to jack the vehicle up, just make sure you have all the parts you need first.<\/p>\n

    NOTE:<\/strong> After looking at the fitting options I noticed that the Nissan version “Breather Tube Connector”, part #38323-C601A works but it is a smaller diameter connector, like 1\/8″ or 3\/16″ maybe. I opted for using 1\/4″ sizing which meant using the Toyota OEM part instead.<\/p>\n

    \"\"
    All the parts I used to do the diff breather mod.<\/figcaption><\/figure>\n

    STEP 1:<\/strong> First, clean away the area around the OEM breather using a rag and your choice of degreaser. Use the 14mm open wrench and remove the OEM breather cap. The Toyota OEM union will thread right in. Note: there will be 2-3 threads exposed when the Toyota OEM union is threaded in, this is fine; you will not get it flush with the axle housing, but this is not a problem as it threads in more than enough.<\/p>\n

    \"\"
    Old one-way breather on the left, new Toyota union barb on the right.<\/figcaption><\/figure>\n

    STEP 2:<\/strong> Attach fuel tubing and secure with a 1\/4″ hose clamp. Run the hose along the side of the right-side brake line, and secure with zip ties (leave some hose slack as shown in the photo below.)<\/p>\n

    \"\"
    Fuel hose used, kept some slack in and zip tied it to the nearby brake line.<\/figcaption><\/figure>\n

    STEP 3:<\/strong> From here many people have their own version of how and what to do after this; some people just zip tie the bare hose and and call it done. Some people\u00a0 run the hose all the way to behind the right-side taillamp and install an in-line filter at the end of the hose. I chose to have the filter in-line, with another piece of hose afterward. As for the in-line filter, I mounted mine on an unused bracket that you can find near the center of the factory crossbar right above the axle.<\/p>\n

    \"\"
    In-line filter high up under the truck bed, using an unused OEM bracket on the cross bar.<\/figcaption><\/figure>\n

    STEP 4:<\/strong> I attached another piece of hose on the in-line filter and ran it to a second unused bracket (on the same crossbar, but to the right), as shown in the photo below.<\/p>\n

    \"\"
    Side view photo of the installation; photo taken from the left side, under the bed, looking at the right rear shock area.<\/figcaption><\/figure>\n

    STEP 5:<\/strong> Finally, for extra moisture prevention I installed a matching 1\/4″ Toyota breather at the end of the hose; the Toyota breather is a 2-way (no spring) to allow for air expansion and contraction. I liked this way better than the smaller diameter Nissan version, which has a spring in the cap making it exit-only.<\/p>\n","protected":false},"excerpt":{"rendered":"

    TOOLS\/PARTS USED Toyota OEM Union 1\/4″, 90404-51026, $5.94* Mann Complete In-Line Fuel Filter, 33001, $4.99…<\/p>\n","protected":false},"author":1,"featured_media":177,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,9],"tags":[138,135,136,66,137],"class_list":["post-171","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-engine-drivetrain-stuff","category-howtos","tag-axle-vent","tag-axle-vent-mod","tag-diff-breather-mod","tag-how-to","tag-rear-breather-mod"],"_links":{"self":[{"href":"https:\/\/www.projectkeira.com\/home\/wp-json\/wp\/v2\/posts\/171","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.projectkeira.com\/home\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.projectkeira.com\/home\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.projectkeira.com\/home\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.projectkeira.com\/home\/wp-json\/wp\/v2\/comments?post=171"}],"version-history":[{"count":9,"href":"https:\/\/www.projectkeira.com\/home\/wp-json\/wp\/v2\/posts\/171\/revisions"}],"predecessor-version":[{"id":1623,"href":"https:\/\/www.projectkeira.com\/home\/wp-json\/wp\/v2\/posts\/171\/revisions\/1623"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.projectkeira.com\/home\/wp-json\/wp\/v2\/media\/177"}],"wp:attachment":[{"href":"https:\/\/www.projectkeira.com\/home\/wp-json\/wp\/v2\/media?parent=171"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.projectkeira.com\/home\/wp-json\/wp\/v2\/categories?post=171"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.projectkeira.com\/home\/wp-json\/wp\/v2\/tags?post=171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}