Rear Differential Breather
Jackson (jacksonpt on the forums) shows you how he hooked up his
rear differential breather for safer water crossings.
Extending the rear diff breather line is a must-do mod. It's cheap,
easy, and quick and requires next to no mechanical expertise. It cost me
all of about $20 and 30 minutes of my time. I ordered 2
parts, a union fitting used as an intake manifold fitting (part number
90404-51319) and a small breather plug (part number 90930-03136) from toyotaparts4u.com
for about $12 shipped. I also picked up about 6 feet of fuel line for about
$6, and a 4-pack of small hose clamps for $2. Both came from AutoZone.I
dropped the spare tire to give myself some room to work (it's kinda funny...
with my lift, and the rear tire dropped, I can sit
up straight underneath my rig-I think it's funny anyway). I used a
small adjustable wrench to remove the old breather filter, and replaced
it with the union fitting. I then attached one end of the fuel line to
the fitting, and secured it with a small hose clamp. I ran
the hose along the brake line and up the gas tank fill tube, leaving
a little extra slack to allow for axle drop. I used zip ties to secure
the hose. I then opened the gas hatch and removed the rubber fitting around
the fill tube (NOTE: do not try to loosen the nut
for the release latch. There is a tension cable used to control the
latch that is easily dislodged-I know from experience. The tension cable
can be re-seated, but it's tight working in there.). I fed the hose out
through the opening and attached the new breather plug and used another
hose clamp to secure it. I then ziptied
the hose to the fill tube to prevent and rattles.
Breather Plug (part #90930-03136)
Union fitting (part #90404-51319)
Latch for gas cover
Close-up of breather line
Extended breather line
Secured breather plug
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