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Hot!pb-46HT back pack blower

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tomplum55
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2018/02/12 15:33:22 (permalink)
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pb-46HT back pack blower

I have a vibration and possible bearing sound at low speeds after gets hot ,18 years old maintain perfectly recently rebuilt carburetor clean fan blades replace isolator rubber ,New blower tubes . Runs great and has great power except for the rumbling/bearing sound
Any suggestions on a cure.

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    AVB
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    Re: pb-46HT back pack blower 2018/02/13 02:57:41 (permalink)
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    Will take some exploratory surgery to find what making the noise on that Echo.
    tomplum55
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    Re: pb-46HT back pack blower 2018/02/18 18:38:12 (permalink)
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    What do I need to disassemble to find and what possible or the most possible reasons why? Is there part of the blower fan that may be causing it or the bearings in the motor.? Just ran a tank and a half a gas out of it runs great just that little rattle at idle.
    AVB
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    Re: pb-46HT back pack blower 2018/02/20 10:48:10 (permalink)
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    That what I mean by exploratory surgery. As you disassembly the blower you look for any possible causes. It can be just anything.
     
    It like having a massive oil leak that looks like an oil seal problem then it turns to be just a fill cap seal. I ran across recently but I have learned to use UV tracer dye.
    Mikel1
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    Re: pb-46HT back pack blower 2018/03/03 13:08:57 (permalink)
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    Bearings can make all kinds of sounds from a rattling sound, popping, and clank sounds to everywhere in between. Gets worse when hot or when more force or weight exerted on them.
    All you need is a slight wobble to produce more vibration.
    AVB
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    Re: pb-46HT back pack blower 2018/03/03 13:12:33 (permalink)
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    You got that right. I just replace an idler bearing on my Silverado that would make a PSST PSST PSST at idle. Sounded like someone was trying to get my attention.
    echoman4
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    Re: pb-46HT back pack blower 2018/03/20 12:38:57 (permalink)
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    Bearings. There should be one on each side of the crank. 18 years old. You did well if properly maintained and heavily used.
    cowolter
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    Re: pb-46HT back pack blower 2018/05/09 03:51:46 (permalink)
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    May I ask here also?
    We got a new Husqvarna 580BTS last year and it seems to run pretty well, starts easily and has decent power. I have run 1 tank of gas through it, so it is not broken in yet. I noticed it has a fair amount of vibration at idle up to about 1/16 throttle, which then smooths out at higher throttle positions. The engine runs smooth with no misses. At idle shakes on the rubber mounts maybe an 1/8' or slightly more and I can feel this through the back pad. Is this normal for this blower?
     
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