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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: powerT on May 18, 2012, 01:54:56 pm
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What size wrench for the back bleeders
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5/16 typically
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If it's been a while since the brakes were bled, you might have to wire brush the threads and squirt some penetrating fluid on em. I like to use a flare nut wrench on the bleeders. It seems to grip better.
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I think my '83 had 10mm.
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If it's been a while since the brakes were bled, you might have to wire brush the threads and squirt some penetrating fluid on em. I like to use a flare nut wrench on the bleeders. It seems to grip better.
This is a excellent suggestion, if you want to avoid a major headache later by rounding out the nut part on the bleeder. Either a line wrench or a six point closed end wrench.
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You can put a 6 point socket on these bleeders so there is no need for a wrench to break them loose
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I'm thinking a 5/16 or 10mm. Depends on who rebuilt the cylinder the last time. Could be either or. Most are, 3/8 front 5/16 rear. could be metric if the company who supplied the cylinder/caliper last time decided to use that standard. If you have a decent set of MM/SAE combo wrenches, you'll be ok.
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but the offset wrenches are nice and not that expensive.
i finally bought one.
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My fronts are 3/8ths and rears are 10mm.
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Its the size wrench that fits the best!. If they are rusted or rounded off a selection of twist sockets will be your best bet.