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glippert

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Greg Lippert
I don't know about the 451, but for the front gearbox on my QA-42A I use Digger's recommended 75% grease and 25% 90 weight oil.
 

glippert

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Greg Lippert
I just removed the four bolts holding the cover. Probably need a new gasket - I just made one from gasket material I bought at NAPA a few years ago. The 75/25 mix is thin enough to keep the gears coated, without having to pack in completely to the top. I just filled it as full as I could. Thought I had a pic after I filled it, but can't find it now.

1637637687527.jpeg
 

spndncash

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Jan 19, 2020
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Medina, Ohio
Lub. specs. are on the last page of this manual.
You should service the Spiral Gear box . the auger bushings are NLA. I made some a few years ago from sintered brass. at least on my 451 the spirol gear box does not seal at all on the auger shafts. that gear box is the one I remove and clean out every year - its right in the snow/salt.
I think that 737-0133 lube number for the blower gear housing has been changed - I bought all of the old 937-0133's from my dealer's discount table this summer $5 each and that number has been superseded by 737-0300A.
the same story with the Spiral gear box but it has basically gone full circle to the 737-0168A No deals on that grease at my dealer. I have over 20 years on this snow blower- grease is cheaper than gears, shafts, bearings etc. I put Hylomar Blue on the gaskets and reuse them about four or five years then make a new one - cork for the blower gear housing gasket and felt for the spiral gear box gasket.
 

jdrong

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Jdrong
I had to do some experimenting with grease and oil in the gear box for my QA 42 in the past. I put new shafts and bearings in the angle drive a few years ago and thought I could try sticking to what I thought was the factory recommendations, straight gear oil, and of course it leaked enough for a small drip. Didn't want to remove the gear box to put grease in so I just removed the fill plug and replaced it with an angled grease zerk and pumped grease into the box. This is one of the very few times an oil leak stopped without replacing seals or another part. I believe the gear lube gets thin enough when warm to be forced pasted the seals by a slight amount of pressure build up due to heat inside an unvented gear box. So, for me, I thoroughly agree with the 25/75 mixture.
 

digger

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The rear gearbox on my 451 has a grease fitting on the bottom, Should i pump grease into it until i cant anymore ? Also the front gearbox, what oil is recommended and quantity ?
Gearbox on those blowers uses bentonite grease, but I have heard of guys using corn head grease. But I wouldn't in mine.
 
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