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Vincent Moy

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Posts posted by Vincent Moy

    92 Seca 2 Generator Cover

    in Yamaha Workshop

    Posted

    So yesterday I was trying to take it off to check on the stator coil. I removed the 3 bolts and tried to take it off. However, the bottom on the cover seemed to be really stuck. It felt like something was glued/ connected behind it. I didn't want to destroy it so I just bolted it back on. I am just wonder if I have to ply it out/ use more force to take it off.

    1992 Seca 2 Battery

    in Naked

    Posted

    So, I took my Seca 2 out for the 1st ride of the year after a long winter. It turns out that my battery is so dead it'll kill my bike if I don't my my rpm over 1500.

    I'm now in the market of a new battery and the book calls for YTX9-BS. However, the pervious owner put a YTZ12S MF in it. And now I'm thinking about maybe getting a YTZ14S. I am wondering if there is anything against this move.

    Thanks!

    Vincent

    Wire harness on 82 400 Maxim

    in Yamaha Workshop

    Posted

    Well, don't know how many people read my post in the classic section but boil things down is that my oil press. light (yes I'm sure it's press. on this bike) is not working. Went through 3 different switch (nos & used) with no avail.

    Someone suggested it's the wiring. Do you guys think it's somewhere in the wire harness? If I want to replace the harness, what are the procedures?

    I have the factory service manual but it didn't say how to replace the harness (Yes I'm a noob). Anyone can give me some pointers?

    Thank a bunch!

    82 XS400J Oil Press. Lite not working

    in Classics

    Posted

    Seconded. If you have good wires, good bulb and a clear passage to the switch, you got a defective switch.

    When I unscrewed my old switch, there was oil coming out. Plus if I have a blockage on the passage and assume the switch is working properly, shouldn't I have the light on all the time?

    Oil Press Switch resistence

    in Classics

    Posted

    Hi all,

    As I posted earlier my oil press. switch is not working. I took it out and tested it with an ohmmeter today and I got about 40 on the R x 1k scale. I'm not sure if it's normal or not.

    Since there's no pressure the contact should be connected (grounded), hance, the ohms should be close to 0 (current can go through, lite up the indicator) .

    Am I right?

    82 XS400J Oil Press. Lite not working

    in Classics

    Posted

    but if you have an earthing issue ie the wire from the switch is earthing out, then you will have the symtoms you describe!!

    what about the bulb and holder itself? have you checked that (replace bulb in case its an intermittent fault)

    the bulb is not the problem I'm pretty sure. And I don't think the wire is earthing out because if it does then the light should be on all the time. So somehow the switch is not connecting (normally when there is oil press.) even when there is no pressure at all, like when the bike is off.

    Does anyone knows how to test an oil pressure switch?

    Thanks!

    82 XS400J Oil Press. Lite not working

    in Classics

    Posted

    correct, or the wire wouldn't be needed in the first place.

    All can think of is you have an earthing issue which will make the circuit

    drewps

    The oil press. switch IS the gnd itself. Somehow when it's low of oil press. it should switch on. I don't know how all this works. BTW, the oil pressure switch is NOS from ebay.

    82 XS400J Oil Press. Lite not working

    in Classics

    Posted

    give the oil press orafice a poke might be sludge in there!!

    I asked the same Q. on xjbikes forum and the people said the wire is probably broken. My question is if the wire is broken isn't it shouldn't send any signal to the lite at all no matter it's gnded or not?

    82 XS400J Oil Press. Lite not working

    in Classics

    Posted

    Hi all,

    I got a XS400J 1982. My Oil Press. Lite is not working. Gnd the wire w/ a tester and the light will go on. Got a new switch in but the lite still won't work (unless I gnd it will a tester).

    I'm outta clue.

    Anyone think of anything? I don't seems to have press. problem tho.

    Do I need a new stator?

    in Classics

    Posted

    The bulb is completely dead on both hi and low now. I'm worried something is going wrong. The wires are fine because I tested them with a 78 xs400 light (which didn't fit...ugh) and both beams worked fine. I have a 20A fuse in all of the slots even though only the main calls for it (10A for the rest). When I was throwing in my new signals and having the brake light disconnected and whatnot, I did blow a few fuses checking things. But upon throwing everything back together, all the fuses functioned fine (granted they were 20A now).

    That was what I did when I had headlight problem last time.

    1 I got a car battery charger/jumper (self-contain unit, not the cable).

    2 Find which pin is gnd and which is hi/low beam.

    3 Connected the black cable to the gnd and the red to either one. (Watch for sparks).

    If it works then it's not the light problem and look somewhere else.

    Hope this help.

    Oil Press. and High beam light not working

    in Classics

    Posted

    Have you also checked at the sending unit? It should go straigh to ground when the engine is not running. If it's not, then it's the sending unit, if it is, then it's the wiring.

    According to the book, I grounded the wire (behind the headlight at both side of the 6-pin connector) and the oil light will goes on. So I'm kinda think it's not the wiring.

    Anyhow, I have a sending unit coming in (Lucky to find one NOS) and my question now is:

    Where is that switch?

    Thanks all!

    Oil Press. and High beam light not working

    in Classics

    Posted

    Hi all,

    I seems to have a lot of minor problem with the bike so please pardon me.

    The 2 lights has never work since I got the bike. I tested the continuity on the 6 pin and seems like the Oil Press (Black/Red). wire has no continuity at all.

    Will that be the oil press. switch or the harness?

    My 2nd Q. is if I leave it this way, will it do any harm?

    Thanks

    Fork oil leak

    in Classics

    Posted

    if the forks are not pitted or bent i would not bother ordering new ones ($$$$) :blink:

    just go with the new seals.

    i would look at why they are not bouncing back, do they feel tight?

    when you have them off check the springs for length and any damage.

    good luck ;)

    I will, thanks!

    I am wondering where can I get some fork spring for it though. I've been looking around but have no luck so far.

    Fork oil leak

    in Classics

    Posted

    So my 82 Maxim 400 seems like has been leaking fork oil for a while with its previous owner. I have been actively riding the bike for only 2 weeks. Other than not very good looking it doesn't affect handling and braking. I am thinking it may even leak out most of the oil already because the other day I push down the front and it won't bounce back.

    I already ordered the oil and dust seal and should arrive anytime soon. I am wondering should I order a pair of new forks altogether.

    Thanks

    Oil filter question

    in Classics

    Posted

    There should be a spring and a washer between the filter and the cup, holding the filter against the engine. If you don't have the spring there you will not get filtered oil, and maybe not get any oil. Also, if you don't have the washer on there but have the spring, the spring can push the rubber piece in the filter into the filter and again make the filter no longer work.

    But the above diagram is copied directly from yamaha web site, and it shows no spring. And so does the serive manual I have.

    Oil filter question

    in Classics

    Posted

    Hi all,

    The other day I changed the oil in my 82 400 Maxim along with the filter. However, I don't recall I put a washer (#7) between the filter and the cover. Also, My filter was just sitting on the cover with this side facing down.OIF016.gif

    My question is, is the filter supposes to just sitting on #1 or should it somehow click with the cover?? partimage.gif

    Thanks

    xs400 front brake leak

    in Classics

    Posted

    I recently bled the brakes of my 81 xs400 and it's the first time they've been bled in 20+ years ( found the bike in a barn a year ago). I didn't have a bleed kit so i roughed it a bit. I disconnected the fluid line at the caliper and drained all the black mess out. I seal it back up, added the new stuff and ran it through. I pumped it through the bleeder valve then. I sealed everything back up and the pressure seemed to have dropped a bit. Stopping felt smoother though. However, now there's a leak coming from somewhere when I press the brake hard and it doesn't look like either the bolt for the fluid line for the bleeder valve. I'm gonna try the baby powder trick tomorrow. Any thoughts? Is there a caliper rebuild kit for stuff like this (seals, etc)?

    There are seal kits available and seems like the 83 XV750 is using the same seal kit too.

    Here's the site:

    http://www.boats.net/parts/detail/yamaha/Y...0047-00-00.html

    1982 400 Maxim fork replacement

    in Classics

    Posted

    So my front fork is leaking, not a lot and definitely seeping out. I am wondering how hard for a 1st timer to do so? Do I need any special tools to get the job done??

    I searched around this forum and find some bit and pieces but nothing really specific.

    thanks

    Clutch switch Lead??

    in Classics

    Posted

    Most clutch switches are to stop the bike being started without the clutch being pulled in. So to stop accidental starting. Some bikes also have a sidestand switch which does the same.

    So even if it's loose it shouldn't make the bike dangerous, am I right?

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