AUGER GEARBOX
9.
Now inspect the worm and worm gear. If either
are damaged replace them both. When gears run
together, they develop wear patterns unique to the
two of them. Replacing only one gear will result in
early failure (Fig. 090).
Occasionally a drop of two of oil will get between the
bushing and ring. When the auger drive is disengaged,
the ring will relax and that oil might drip into the auger
housing. At this rate the machine can be used for several
years without any significant oil loss. The yearly oil check
is more than adequate to compensate for this.
If there is a significant amount of oil coming out of this
area, it would indicate that the gearbox has been at a
severe operating angle or the bushing is badly worn.
Oil on the bottom of the gearbox can result from a leak
on any part of the case. As there is no internal pressure,
any leaking oil runs down the side of the case and
collects on the bottom until there is enough to drip off.
The source of the leak can be difficult to see. Sprinkling
some powder on the outside of the gearbox will usually
show the oil trail. The type of powder used is not
important. Just something that will stick to the oil.
When you open a gearbox that has had the gears
fail, the remaining oil will likely appear as a small
puddle of very thick grease in the bottom. Worm gears
normally create friction due to their sliding action. When
something goes wrong, not enough oil, poor quality oil, a
problem with the gears, or just a gear or bearing wearing
out, the friction becomes abnormally high. The remaining
oil is cooked down to a very thick residue. This can be
the result of a failure, not the cause.
Fig 090
DSC-0028
Failure Analysis
The square cut ring on the impeller shaft is not an oil
seal. It is a wiper ring that has a tendency to pull down
to the shaft when the shaft begins to turn. The bushing
next to the ring deflects most of the oil that is thrown
towards that area. The loose fit provides a vent for the
case (Fig. 091).
Fig 091
DSC-0061
Power Max Service Manual
7-7
| Categories | Snow Blower Manuals, Toro Snow Blower |
|---|---|
| Tags | Toro Power Max 1028LE, Toro Power Max 826LE, Toro Power Max 828LE, Toro Power Max 828LXE, Toro Power Max 828OE, Toro Power Max 828OXE |
| Model Year | 2005 |
| Download File |
|
| Language | English |
| Product Brand | Toro. Customer Service Representatives are available by phone:
Monday - Friday 7:30 a.m. to 9:00 p.m. (CDT) - Saturday 8:00 a.m. to 8:00 p.m. (CDT) - Sunday 10:00 a.m. to 8:00 p.m. (CDT)
Canada 1-888-225-4886 USA 1-888-384-9939, Snow Blower |
| Document File Type | |
| Publisher | toro.com |
| Wikipedia's Page | Toro Company |
| Copyright | Attribution Non-commercial |
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