Murray 8hp 27" Wheel lock & release problem - Snowblower Forum : Snow Blower Forums
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post #1 of 20 Old 12-29-2015, 09:28 PM Thread Starter
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Murray 8hp 27" Wheel lock & release problem

Model 627804x6a S/N S001587761683
I'm new to your site but have read most every topic I thought applied to me and couldn't find the answer I need.
I picked this up last year, no idea what year it is but it's in excellent shape and it worked great. First snow of the year last night and had an issue with the wheels locking up under load. Going along blowing and all of a sudden wheel lock, give it a good shove and start moving again for a couple feet and then same issue. Sometimes I have to rock it to and fro to free them up. With no load it drives perfectly. When I tip it on the hood the wheels move freely, friction plate and rubber drive wheel in very good shape along with a new belt. What's causing the lock up?
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post #2 of 20 Old 12-30-2015, 02:35 PM
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Does this machine have power steering clutches on each handle?

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I can watch somebody work for hours...
2008 Craftsman 944.528391 (It's a Husqvarna ST227P)
27", B&S 305cc 13.5 ft/lb Torque 9.5 hp
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post #3 of 20 Old 12-30-2015, 05:31 PM Thread Starter
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No, it does not. Just drive and impeller.
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post #4 of 20 Old 12-30-2015, 06:18 PM
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Sounds to me like a broken or missing return spring for the Drive Plate Assembly.
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post #5 of 20 Old 12-30-2015, 06:43 PM Thread Starter
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I'm not sure what or where that is but the drive plate returns to neutral without issue. Of course it is returning while not running or under load.
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post #6 of 20 Old 12-30-2015, 06:48 PM
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Quote:
Originally Posted by Mur278 View Post
I'm not sure what or where that is but the drive plate returns to neutral without issue. Of course it is returning while not running or under load.
I assume you have checked the friction wheel, and friction disk for oil or grease and both are squeeky clean?? You might need to tighten up on the cable adjustment for the traction clutch to get a tighter fit of wheel to disk

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I can watch somebody work for hours...
2008 Craftsman 944.528391 (It's a Husqvarna ST227P)
27", B&S 305cc 13.5 ft/lb Torque 9.5 hp
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post #7 of 20 Old 12-30-2015, 06:51 PM
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s it really locking or is it slipping? My guess is slipping and the belt is not able to handle the extra load. You might check that the belt is no to long and the tension is good.



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post #8 of 20 Old 12-30-2015, 06:53 PM Thread Starter
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The friction wheel & disk are very clean and make strong contact. I'm not having an issue getting it to engage but with the wheels being locked up and not moving while disk is engaged. I'm very handy but definitely feeling snowblower stupid........
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post #9 of 20 Old 12-30-2015, 06:53 PM Thread Starter
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Not slipping, wheels locking. Belt is new and tightens nicely.
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post #10 of 20 Old 12-30-2015, 06:58 PM
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Possibly some worn bushings are allowing a jackshaft to **** just enough to bind things up?
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