Manual 2017 Rev C p/n 2017
30
08
DISASSEMBLY OF BLOWER
WARNING
!
Before performing any repair or replacement,
disconnect and lock out power.
With proper maintenance and lubrication, normal
life expectancy for gears, bearings, and seals
can be achieved. However, over time these parts
must be repaired or replaced to maintain the
ef
¿
ciency of the blower. This section is written in a
way that will allow you to completely disassemble
the blower. The inspection of certain repairable
or replaceable parts is referred to at the point of
disassembly where these parts are exposed. If
repair or replacement is deemed necessary at any
point of inspection, appropriate instruction is given
to achieve.
1. Remove the oil drain plugs in the bottom of the
end covers and drain the oil.
2. Remove eight cap screws and remove the
gear cover.
OTE:
N
It may be necessary to tap the sides with
a mallet or wooden block to break the seal
joint.
Gears are not exposed for visual inspection prior to
disassembly.
Inspect the gears for the following:
• Broken
teeth
• Chipped
teeth
• Uneven
wear
• Excessive
wear
• Any other abnormalities
3. Position the blower with the drive gear on the
left when facing the gears. Remove the socket-
head screws and washers.
4. Align the timing marks, count 3 teeth up, and
place reference marks on the gears (see
Figure 8-1
).
DRIVE
GEAR
DRIVEN
GEAR
Figure 8-1 – Timing Marks Matched
DISASSEMBLY AND REASSEMBLY
