FJ40 Smog Pump Removal - How??

Discussion in '40- & 55-Series Tech' started by berntd, Jan 15, 2006.

  1. berntd

    berntd

    Messages:
    138
    Hi all,

    I think the smog pump is busy seizing up on my 2F. The fan belt sometimes starts screaching for short periods although it has enough tension.

    This pump is not in use and the input is shorted to the output by a hose.

    I would like to remove this pump but I also understand that it is needed as a pully to tension the belt from the crank to the fan.

    What suitable pulley assembly can I replace the pump with and where should I try and find it (off which motor etc.)?

    Thank you very much for all the great help in the past!

    Kind regards
    Bernt
  2. When I removed my smog pump i just pulled everything off. The fan is run by the one belt for the alternator now... I don't know if you have p/s or a/c, that could change things. I have neither, so there was no real complications once the smog pump was gone. Hope that helps.
  3. landcrusher909

    landcrusher909 Hobbyist SILVER Star

    Messages:
    4,138
    Location:
    Southern Calif.
    i pulled everything off my 73 2-f and pluged the intake smog holes as far a the belt goes i just have one running the water pump and alt.
  4. 65swb45

    65swb45 Supporting Vendor

    Messages:
    13,253
    Location:
    so cal, going 45
    Since you didn't say what year the 2F is, the ? is a little harder. Try being a little more specific next time.

    If it's an 80 and older, you can just pull the pump and get a shorter belt to drive whatever else is on that groove of the balancer

    If it's an 81 and newer, you'll prolly want to get one of those fab pulleys that Jim C. sells. Bolts up where the smog pump was PERFECTLY so there are no belt issues. ;)

    Best

    Mark
  5. projektdotnet

    projektdotnet

    Messages:
    1,873
    Location:
    Port Orchard, WA
    so on a 10/74 with an F motor how hard would it be to just rip it off and if my vehicle isnt smog exempt what do I do...leave it on? What are the pros n cons of removing the smog equipment. Sorry for hijacking
  6. berntd

    berntd

    Messages:
    138
    Hi all,

    Ok ok, it is an 82. There are 2 belts. One drives the alternator and PS from the crank and the other drives the Fan and smog/air pump.
    A shorter belt will not work because I need a tensioning mechanism.
    A single belt will not work either (I think) as I cannot see how I would get to the Fan with it.

    As mentioned, I need an idler pulley and I am still wondering if any oher 2F or maybe 3F motors had one that I could fit in place of he pump.

    How about removing the insides of that pump and use only the shaft and pulley? Would that be possible?

    Thanks for the tip for a pulley from Jim C. I will check out.
    How do I find him?

    Regards
    Bernt
  7. projektdotnet, I can't imagine that your '74 is still subject to the sniffer. If it's not just take that joker off, take off your air injection rail that goes into your intake manifold, get some plugs for the holes and call it a day.
  8. 69 FJ40 530

    69 FJ40 530

    Messages:
    2
    What did you use to plug the smog holes? I cant find a pug to fit.
  9. 69 FJ40 530

    69 FJ40 530

    Messages:
    2
    What did you use to plug the smog holes? I can't find a plug that fits.
  10. MoCoNative

    MoCoNative

    Messages:
    1,069
    Location:
    Craig, CO
    Gutting the pump is one option, but if it is seizing up it may the bearings that are doing the seizing, and that won't help you much if you gut it. Could just be the vanes inside that are causing it, but really no parts are left to rebuild it, even as an idler.

    An alternator from a 3F and maybe a 1F will bolt down there. May need the bracket for them, I'm not sure, but you could run a second alternator that way, if you are looking for a second battery and lots of juice.

    Otherwise the pulley Mark mentioned is the easiest route.
  11. Trollhole

    Trollhole THC Moderator Supporting Vendor

    Messages:
    18,827
    Location:
    Mauldin, SC
    Not so fast. ;)

    http://forum.ih8mud.com/40-55-series-tech/156216-smog-pump-rebuild-bearings.html

    http://forum.ih8mud.com/40-55-series-tech/204096-smog-pump-rebuild.html

  12. MoCoNative

    MoCoNative

    Messages:
    1,069
    Location:
    Craig, CO
    Ah yes, but did we ever determine if the parts were out there to fix the newer pumps. Perhaps they are, I can't remember, but I thought the front bearing ended up being proprietary to Toyota, perhaps I'm wrong.

    How has yours held up Marshall? Do you have to test? I can't remember if you put it back on in a bright color of somesort :)

    Original poster, if you have the skills anything is possible, I guess tear it down and see what you can do.
  13. Trollhole

    Trollhole THC Moderator Supporting Vendor

    Messages:
    18,827
    Location:
    Mauldin, SC
    No tests. But still works fine. Ended up getting a block of Resin impregnated graphite and cutting blocks on the band saw for the vane seals. Bearings I think will last longer than the cruiser. I would think if you were just using it for an idler pulley and capped off the tubes, and removed the vanes and replace the two bearings it would last a really long time
  14. 1911

    1911 chupacabra SILVER Star

    Messages:
    3,252
    Location:
    Parker County, Texas
    Jim C. (FJ40Jim) sells them cheap, and also a complete kit with all the various plugs needed for a complete de-smog. Some people just use pipe plugs.
    Last edited: Jan 14, 2010
  15. american psycho

    american psycho

    Messages:
    782
    Location:
    switzerland
    I'm sure. The mounting bracket under the motor mount on the frame is different in my 84.

    I put the alternator up high and put in a smog pump as a tensionier and will be ordering the JimC pulley (or fabbing my own) when the smog pump starts to go.

    the second alternator is a good idea, too.
  16. LAMBCRUSHER

    LAMBCRUSHER

    Messages:
    4,469
    Location:
    lost
    You may find if you open up your pump that there are bits of what were the guts inside that are knocking around in there and binding up your pump. If that's the case, then you could just dump out the shards and finish gutting it out. The bearing may not be that bad off and you might be able to use it as a tensioner till you can rebuild yours- or just leave it, if you're going to desmog. Trollholes thread is a great place to get a better idea of what to expect, and it seems that I, too, must visit that site again. NICE.

Share This Page