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#1
09-26-2011, 08:51 PM
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QA36A Snow thrower Gearbox
I purchased a QA36A Blower and I'm Rebuilding the 90 Degree gear box. My Question, is the gear box suppose to have 80# weight gear lube or fill it with gear grease? The reason I'm asking is when I took it apart the larger gear had broken teeth and I wasn't sure it's do to the heavy grease in it when it should of been the lube.
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#2
09-28-2011, 08:25 PM
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I have been researching this question also (for my QA-36)...at some point, these were manufactured with a fill plug and gear oil was recommended, then they were made without the plug and grease was recommended. Some have suggested using some oil and some grease. (I think that is what mine had in it.) All recommend filling only about 60% full. I think I am going with a gear oil with sealant on a new gasket. (And keep an eye out for seepage)
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#3
09-28-2011, 09:07 PM
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I used 80 weight gear lube in mine with no problems. Mine of course has the fill and drain plugs. Cub manual recommends filling until it runs out the bottom plug, about 30% volume I would guess.
CaptMax
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CC 1964 Model 70 Serial# 78905 Creeper gears, Round fenders, Spring assist. CC 1965 Model 102 Serial# 127109 Creeper gears, 3 point, Carlisle AG's, headlights, and a cigarette lighter. 42" Blade, Brinley plow, 42" mower deck, 1A tiller, QA36 snow thrower
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#4
09-29-2011, 08:46 AM
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My experience is they work equally well with grease, gear oil or a combination of both.
So—if they tend to leak a little because the seals are old, I use grease. as it leaks less or not at all. The gear was broke because something got in the auger. (#1 cause) It happens infrequently, and it usually is the large 30 tooth gear that goes. They are pricy if you can find them as they are no longer made. To my knowlege, no one has gone aftermarket with manufacturing. Some of the Gears were made from a powdered metal process (sintered iron) and tend to be a little brittle. Also it is best to find a complete set of gears as not all gears mate properly in the case, requiring slight machining to get the correct backlash
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