47" blower auger not engaging!!!!!!
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Thread: 47" blower auger not engaging!!!!!!

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    47" blower auger not engaging!!!!!!

    PLEASE HELP!!!!! I have a JD 445 with a 47" blower mounted. All of a sudden while blowing the door yard today the auger stopped spinning! The 2nd stage blade is spinning and would send the snow up and out of the shoot but the AUGER itself isnt spinning. I need help ASAP as I have 16" of snow blocking my driveway and about 30" from the state plow at the end of the driveway and a highly agitated wife!!!

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    Captain Hook Kennyd's Avatar
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    Welcome to GTT

    Shear bolts? #3 in pic:
    Click image for larger version. 

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    arlen likes this.
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    arlen's Avatar
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    I can't say that I've ever sheared both sides at once. The shear bolts are grade 5, 1/4-20x1 inch bolts with a nylock nut. If you've never sheared one before, there should be some spares in a few drilled holes back by the base of the chute.
    Maybe give your wife a shovel, that should keep her busy for a while.
    Last edited by arlen; 02-02-2015 at 08:06 PM.
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    not the sheers. The auger wont free spin as if the botls snapped. There is still tension there but no engagement of the auger.....and the wife cares for the 5 little kids! If i give her a shovel I will get hit with it!

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    arlen's Avatar
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    Quote Originally Posted by NateJette View Post
    not the sheers. The auger wont free spin as if the botls snapped. There is still tension there but no engagement of the auger.....and the wife cares for the 5 little kids! If i give her a shovel I will get hit with it!
    That doesn't sound good… Getting hit with the shovel, or it not being in the shear pins.
    Unfortunately, your problem sounds internal to the gearbox.
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    I would think that if something in the gearbox went the auger wouldnt have resistence behind it....right?

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    Captain Hook Kennyd's Avatar
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    Perhaps one of the shaft keys have sheared:
    Click image for larger version. 

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    Blower And Gear Drive
    Cart key PART NO. PART NAME QTY SERIAL NO. REMARKS
    1 AM109105 Blower Fan 1
    2 M120084 Arm 2 (SUB FOR AM108295)
    3 M97577 Seal 1
    4 40M7216 Snap Ring 1
    5 40M7259 Snap Ring 1
    6 AW25771 Shim Kit 1 (SUB FOR AM109466)
    7 AW25700 Shim Kit AR (SUB FOR AM109467)
    8 19M7785 Screw 2 M10 X 25
    9 AM109106 Bracket 1
    10 14M7465 Lock Nut 2 M10
    Cart key PART NO. PART NAME QTY SERIAL NO. REMARKS
    11 19M7784 Screw 2 M10 X 20
    12 M97570 Gear Case 1 NLA
    13 M97574 Seal 2
    14 JD8514 Ball Bearing 2 NLA
    15 M97571 Gear 1
    16 M97573 Sleeve 1
    17 AM109468 Shim Kit AR SHIM
    18 M97580 O-Ring 1
    19 M97579 Cover 1
    20 19M8439 Screw 4 M8 X 25
    Cart key PART NO. PART NAME QTY SERIAL NO. REMARKS
    21 M97608 Fitting Plug 1
    22 M96897 Shaft 1 - 040000 NLA
    M120759 Shaft 1 040001 -
    23 22H843 Set Screw 2 3/8" X 7/16"
    24 R294DN Shaft Key 3 (SUB FOR N7154DN)
    25 M97572 Shaft Key 1
    26 M97578 Shaft 1
    27 M97581 Shim AR
    28 M97575 Bearing 2
    29 M97576 Spacer 1
    Cart key PART NO. PART NAME QTY SERIAL NO. REMARKS
    30 ...... Gear Case 1 - 060847 (SUB DE18720)
    31 19H1914 Cap Screw 1 1/4" X 1"
    32 M40333 Lock Nut 1



    You weren't using Grade #8 shears bolts where you?
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    Ive never had to replace he sheers.....so I dont know what know what grade hey are. The snow is light and fluffy and worked great for last weeks storm. I didnt hit anything on my first pass so I dont know what would have sheered the bolts off. The auger disengaged when I put into reverse as it should do but when I went to kick it on again for the next pass there wasnt any snow blowing! I got off to check and see what was up and noticed that the impeller blade was still screaming along but no action from the auger. I shut it down to see if it was he sheers but there was still resistance to the auger. I brought it into the garage and swept out what I could and checked what I could without full dissection.

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    Superglidesport's Avatar
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    Sounds like either #26 Shaft or #15 Gear within the gearbox has stripped. Remote possibility may be the #24 or #25 key that drives the auger shaft but most likely the gearbox has to come apart to diagnose the problem any further.
    Last edited by Superglidesport; 02-02-2015 at 09:19 PM.
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    There is a shear pin between the secondary and the gear box on mine. You might have broke that one.

    Btw I broke both end ones on mine Sunday. I found a cinder block my dad hid.
    636mullet and BigJim55 like this.

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