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What size alternator fuse for a diesel digger?

  • 23-03-2010 09:59PM
    #1
    DiarmaidGNR
    Registered Users, Registered Users 2 Posts: 382 ✭✭


    Hi, just got the lend of a friends ****ty digger, alternator was bolloxed (and fuse missing) so got it rebuilt, put it back in, - but don't know what fuse rating to put in. I tried a 25 amp, - but it blew after half an hour.
    There is no manual or anything to look at (really ****ty digger).
    It's a hitachi (13 tonne probably) with an isuzu diesel engine, with 2x12volt batteries.
    Any ideas?
    Tagged:


Comments

  • #2
    kerryman12
    Registered Users, Registered Users 2 Posts: 940 ✭✭✭kerryman12


    feck sake I have the same problem at the moment on a identical machine, the altenator is away at the moment as well. When i get it back i will have a look.


  • #3
    DiarmaidGNR
    Registered Users, Registered Users 2 Posts: 382 ✭✭DiarmaidGNR


    kerryman12 wrote: »
    feck sake I have the same problem at the moment on a identical machine, the altenator is away at the moment as well. When i get it back i will have a look.

    Cheers!!


  • #4
    barongreen
    Registered Users, Registered Users 2 Posts: 84 ✭✭barongreen


    25a is way two small anyway, 50a might not cover it, but id start there if you dont get any more info. i know you can get 100a ones also. goo luck with it btw


  • #5
    DiarmaidGNR
    Registered Users, Registered Users 2 Posts: 382 ✭✭DiarmaidGNR


    barongreen wrote: »
    25a is way two small anyway, 50a might not cover it, but id start there if you dont get any more info. i know you can get 100a ones also. goo luck with it btw

    Are you a mechanic? I want to know the correct fuse rating so that I don't cook my new alternator, -or set the digger on fire! There might be a short somewhere causing the high current draw.


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