BTR-S
ERIES
O
PERATION
& M
AINTENANCE
M
ANUAL
12838 Stainless Drive, Holland, MI 49424
Phone: 616/399-5600 Fax 616/399-3084
Copyright 2018 BRAWN Mixer
www.BRAWNMIXER.com
Page 7 of 9
11/27/2018
MAINTENANCE / LUBRICATION,
Cont.
TABLE 2: APPROXIMATE OIL CAPACITY (QTS)
FOR GEAR DRIVES
CASE SIZE
OIL CAPACITY
9022
2.43
9032
3.49
9042
6.87
9052
12.2
9062
20.1
9072
20.1
9082
40.2
AUTOVENT PLUG:
The Autovent plug
(FIGURE 3)
is
brass in color and will be located at the highest point on
the gearbox. It operates like a check-valve to allow the
reducer to relieve internal pressure while preventing
lubricant contamination during cooling. A spring presses
a ball or plunger against a machined orifice until
pressure exceeds 2 psi. Above 2 psi, the air is allowed to
escape depressurizing the gearcase. When internal
pressure drops below 2 psi, the autovent re-seals closing
the unit to the outside environment. After shutdown the
reducer cools along with the air inside the reducer. The
unit will temporarily maintain a slight vacuum until
normalization occurs.
FIGURE 3: THE AUTOVENT RELEASES BUILT-UP
AIR PRESSURE FROM INSIDE THE GEARBOX (MAX.
PRESSURE 2PSI).
FILL LEVEL & DRAIN PLUGS:
The drain plugs
(FIGURE 4)
are metric socket head cap screws. They
will be located at the lowest part of the gearbox for ease
of draining. The fill level plug is a hex head cap screw. It
will be located between the Autovent and the drain plug.
Both types of plugs will have gaskets included to prevent
oil from leaking.
FIGURE 4: TWO TYPES OF PLUGS FOR
MAINTENANCE
Summary of Contents for BTR Series
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