metalmonkey47 Posted December 11, 2011 Report Share Posted December 11, 2011 I'm changing the wheel cylinder on the rear brakes of my 620, and found the brake bleeder was broken off flush in the past by one of the P/O's. The bleed screw is on the top, directly above the brake line. Is it possible to accurately bleed the rear brake with the center bolt that holds the second piece to the wheel cylinder? Quote Link to comment
I'm BLUE Posted December 11, 2011 Report Share Posted December 11, 2011 New cylinder yo !!!! U mean the bolt that holds the cylinder on ? Quote Link to comment
ggzilla Posted December 11, 2011 Report Share Posted December 11, 2011 Bolt that holds the hose on? Yes... it's possible but not easy or convenient. Since you are replacing the cylinder, just throw the old broken one away. Quote Link to comment
metalmonkey47 Posted December 11, 2011 Author Report Share Posted December 11, 2011 New cylinder yo !!!! U mean the bolt that holds the cylinder on ? I got one yo! lol The 620 is a two piece. The bleed isn't on the cylinder, it's on a second piece that bolts through a center bolt to the cylinder. The cylinder is held on with 4 studs and nuts. Quote Link to comment
I'm BLUE Posted December 11, 2011 Report Share Posted December 11, 2011 I got one yo! lol The 620 is a two piece. The bleed isn't on the cylinder, it's on a second piece that bolts through a center bolt to the cylinder. The cylinder is held on with 4 studs and nuts. Ollz ... Ahhhhhhhh I see ( bows to knowledge ) ... Quote Link to comment
datzenmike Posted December 11, 2011 Report Share Posted December 11, 2011 Air rises and could be trapped around the broken bleeder, that's why it's at the top. You could try it. I had an Olds that had a broken caliper bleeder. I removed the caliper, tilted it up and hand filled it through the brake line hole to get the air out. Worked. Don't think that will work here unless you flip the truck. Quote Link to comment
metalmonkey47 Posted December 11, 2011 Author Report Share Posted December 11, 2011 I'll just flip the truck Quote Link to comment
metalmonkey47 Posted December 11, 2011 Author Report Share Posted December 11, 2011 does anyone have the thread pitch of the bleed screw? Also, will the 521 piece work? Quote Link to comment
datzenmike Posted December 11, 2011 Report Share Posted December 11, 2011 Different part numbers but it looks exact. Quote Link to comment
ggzilla Posted December 11, 2011 Report Share Posted December 11, 2011 There are differences. The 320s use imperial threads, while 620s (which look the same) use metric threads. They probably switch in the 521 timeframe, as Nissan switched to metric starting 1967. Quote Link to comment
metalmonkey47 Posted December 12, 2011 Author Report Share Posted December 12, 2011 Does the 521 use the same housing as the 620? I more need that then anything, since mine are kinda trashed with E-Z outs stuck in the bleed screw. Quote Link to comment
yello620 Posted December 12, 2011 Report Share Posted December 12, 2011 You must have an Autozone replacement cylinder, every 620 wheel cylinder that i have replaced with new came with the second piece. :D Just looked on Rockauto.com and almost every brand listed is pictured with the piece that you need. 1 Quote Link to comment
metalmonkey47 Posted December 12, 2011 Author Report Share Posted December 12, 2011 You must have an Autozone replacement cylinder, every 620 wheel cylinder that i have replaced with new came with the second piece. :D Just looked on Rockauto.com and almost every brand listed is pictured with the piece that you need. What???????? Looking now... Returning with reps! EDIT: +1! Thanks dude. I didn't even bother looking before. Just ordered a cheap wheel cyl with 2 day shipping. Thanks! Quote Link to comment
yello620 Posted December 12, 2011 Report Share Posted December 12, 2011 EDIT: +1! Thanks dude. I didn't even bother looking before. Just ordered a cheap wheel cyl with 2 day shipping. Thanks! Hardly worth the time worrying about it when a brand new one is only two days away. And certainly better than trying to remove theat broken one with an EZ-out. Quote Link to comment
metalmonkey47 Posted December 12, 2011 Author Report Share Posted December 12, 2011 Hardly worth the time worrying about it when a brand new one is only two days away. And certainly better than trying to remove theat broken one with an EZ-out. For sure man. I had no clue that part was still available. Guess I'm going to rock auto for pictures next time Thanks again man Quote Link to comment
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