difrangia Posted March 28, 2017 Report Share Posted March 28, 2017 Whew !! Mamma Mia !! Minus the mirrors & bed hooks, that's one beautiful survivor. 2 Quote Link to comment
HOGIE Posted April 2, 2017 Author Report Share Posted April 2, 2017 I need to replace or service the clutch slave cylinder. More likely replace. I'm assuming they are the same but are the Jseries clutch slave cylinders the same as Eseries? 1 Quote Link to comment
320 Newb Posted April 2, 2017 Report Share Posted April 2, 2017 What are the symptoms when a clutch slave needs replaced/repaired? 2 Quote Link to comment
HOGIE Posted April 2, 2017 Author Report Share Posted April 2, 2017 Well mine had the rubber boot missing that keeps dirt out so the piston is seized 1 Quote Link to comment
Draker Posted April 2, 2017 Report Share Posted April 2, 2017 If the bore is the same, you might be able to rebuild using components from another master. 3 Quote Link to comment
KFunk740 Posted April 2, 2017 Report Share Posted April 2, 2017 I need to replace or service the clutch slave cylinder. More likely replace. I'm assuming they are te same but are the Jseries clutch slave cylinders the same as Eseries? Nah, they're not. The E1 slave has different bolt spacing, and isn't commonly available. I think I've seen E1 style slaves on ebay occasionally. You might be able to fab up some kind of adapter for a Jseries slave, or just rebuild you own somehow. 2 Quote Link to comment
HOGIE Posted April 2, 2017 Author Report Share Posted April 2, 2017 Thanks KFunk Well shit. I guess I'll be trying to rebuild this somehow. I was under the truck pulling the slave rubber line and realized the slave was in bad shape. I've got it soaking in PBlaster. 1 Quote Link to comment
wayno Posted April 2, 2017 Report Share Posted April 2, 2017 OK, I believe the 320 has a 2 3/8ths bolt pattern, it is wider than the late 520/521/620/720 slave which is 2 inches, now if one was to cut the 521 slave holes and make them slotted, you could center the slave, tighten it down and I suspect it would work fine, that is what I would do till I could find a 320 slave. Here is a link to the first auction I found on ebay for a 320 slave. http://www.ebay.com/itm/Datsun-320-pickup-early-520-pickup-Patrol-clutch-slave-cylinder-/322254706534?hash=item4b07e09766:g:L3oAAOSwn9lXLRRY&vxp=mtr 3 Quote Link to comment
difrangia Posted April 2, 2017 Report Share Posted April 2, 2017 If you can salvage that slave housing, here's everything that you need: http://www.ebay.com/itm/170927629020?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT 2 Quote Link to comment
KFunk740 Posted April 2, 2017 Report Share Posted April 2, 2017 Well shit. I said the same thing, except I was underneath the truck trying to thread bolts in at the time, hah. I might've considered the slotting thing briefly, but then I realized there was no sign of leakage at all from the original slave and just put it back. I also wasn't sure if it'd slide in the slots at all depending on how much force goes through it. Probably not really an issue, but I'm paranoid sometimes. I should grab one of those rebuild kits though to keep on the shelf for when I'm bored. My leak ended up being the clutch master cylinder, which is commonly available for later trucks and easy to swap. You have to use your original push rod that goes from the pedal to the master, though. 2 Quote Link to comment
]2eDeYe Posted April 2, 2017 Report Share Posted April 2, 2017 I also wasn't sure if it'd slide in the slots at all depending on how much force goes through it. Probably not really an issue, but I'm paranoid sometimes. The forces from the slave are mostly linear, putting the bolts in shear. There is a bit of tension load due to the arc of the throw-out lever arm, but even that would be in the axis perpendicular to the slots. As long as the slave is centered and the bolts are tight the slave cylinder will never move. 2 Quote Link to comment
HOGIE Posted April 2, 2017 Author Report Share Posted April 2, 2017 If you can salvage that slave housing, here's everything that you need: http://www.ebay.com/itm/170927629020?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT I wish I would've waited and found that one. It's more complete. Last night I ordered this one. Same bore and dust cover just without spring and clip http://m.ebay.com/itm/Datsun-SPL311-SRL311-410-411-75-quot-Clutch-Slave-Kit-with-Piston-ref-30620-08025-/371791862285?txnId=922887367024#vi__app-cvip-panel 1 Quote Link to comment
mhub91 Posted April 2, 2017 Report Share Posted April 2, 2017 Mine was so rusted, I think there wasn't a chance of saving it... Purchased a slave for a 520. Wouldn't fit correctly, as stated above the bolt holes are somewhere around 2 3/8" So, I modified mine to fit. Ugly? Definitely. Does it work? Absolutely. 4 Quote Link to comment
Stoffregen Motorsports Posted April 2, 2017 Report Share Posted April 2, 2017 If you have hard enough washers and strong enough bolts (and good threads), you probably don't even need the added welded pieces. I'd actually be leery of welding on a hydraulic cylinder as it may distort the bore. 2 Quote Link to comment
mhub91 Posted April 2, 2017 Report Share Posted April 2, 2017 If you have hard enough washers and strong enough bolts (and good threads), you probably don't even need the added welded pieces. I'd actually be leery of welding on a hydraulic cylinder as it may distort the bore. I had worried about welding it .... after i welded it. Meh, its ok, though. My 320 is a sunday driver (at best). 2 Quote Link to comment
Stoffregen Motorsports Posted April 2, 2017 Report Share Posted April 2, 2017 It will probably never be a problem, even if the heat did warp it. 1 Quote Link to comment
Conner Posted April 2, 2017 Report Share Posted April 2, 2017 Just FYI I have a NOS NABCO 3/4" slave cylinder for a 520/521 with the 2" spaced bolt holes. I popped the dust cover off to see if I could scavenge its internals to rebuild my stock 320 slave cylinder. The 520 cylinder must have an updated design, though, because there's no spring in there. Just the piston. Hogie: this probably explains why your rebuild kit omitted the spring and clip--it was probably for a later truck. 2 Quote Link to comment
HOGIE Posted April 3, 2017 Author Report Share Posted April 3, 2017 Yup, the Jseries slave cylinders had an external return spring. The one I bought was listed as SPL311, roadster, and has the 3/4 bore. I planned on reusing the return spring. Going to take the slave cylinder to work tomorrow and drop it in the hot tank. Hopefully the caustic and heat will break it loose. If not I'll have to buy a new one. Ouch 1 Quote Link to comment
wayno Posted April 3, 2017 Report Share Posted April 3, 2017 I usually spray whatever I have around into the bore of the slave I am trying to save, I will even remove the hose and spray in the other end also, I let it sit for a while, then if the piston inside is not bottomed out, I will start working at getting it to move just a little in, if it moves then I use a hone and clean up everything I can to the piston, I then get a rag and wrap it around the end of the slave so I don't lose the piston, I then stick my pointed air nozzle in the hole where the rubber hose goes and I pull the trigger, if it shoots out it gets caught in the rag, if it moves a little I push it back in a little and repeat till it does shoot out, I then hone the whole bore, put it back together and hope for the best, if it leaks I go find another slave and try again, so far I have never had to by a clutch slave, so far................ :mellow: 3 Quote Link to comment
HOGIE Posted April 3, 2017 Author Report Share Posted April 3, 2017 Nice. Thanks for that technique Wayno. It's not bottomed out so I'll tap it in and try honing it. I had thought about using air to force it out. 1 Quote Link to comment
wayno Posted April 3, 2017 Report Share Posted April 3, 2017 Sometimes they are just stuck and you have to buy a new one. 1 Quote Link to comment
HOGIE Posted April 3, 2017 Author Report Share Posted April 3, 2017 We'll see. I'm not count it out yet Shit I already bought the rebuild kit so I'll be giving it my best. 3 Quote Link to comment
KoHeartsGPA Posted April 3, 2017 Report Share Posted April 3, 2017 10 weeks to Canby, chop-chop, HOGIE! 2 Quote Link to comment
HOGIE Posted April 3, 2017 Author Report Share Posted April 3, 2017 As soon as I figure out this clutch slave issue I'll get the rubber hose made. Next is button up fuel system then new coolant and lines and it's time to start it up. 2 Quote Link to comment
HOGIE Posted April 4, 2017 Author Report Share Posted April 4, 2017 Sometimes they are just stuck and you have to buy a new one.I hot tanked the slave cylinder and then used your technique. The hot tank helped clean the outside really well but didn't help the piston move. Lubed it up with PB again and used forced air. Came right out. To hone it out so far I've just used a socket with fine sand paper. Might go get a brake cylinder hone. It's gonna work fine 1 Quote Link to comment
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