7
1. The hoist should be mounted with the centerline of the
drum in a horizontal position. The mounting plane of the
base may be rotated in any position around this center-
line.
2. Because of the design of the mounting base, the direction
of line pull should be only as shown in the illustration
above. Line pulls in any other direction must be approved
by BRADEN Engineering.
3. When mounting the hoist, use all eight mounting holes
and Grade 8 capscrews and nuts. Tighten to recommend-
ed torque.
It is important that the hoist is mounted on a surface that
will not flex when in use, and cause binding of the gear
train. Binding in the gear train will result in accelerated
wear and heat. Also, be sure the hoist is mounted on a flat
surface. If necessary, use shim stock to insure the mount-
ing surface is flat within 0.020 inch (0.5 mm). Use stain-
less-steel shim stock as required.
4. The vent plug must always be located above the horizontal
centerline.
If the hoist is mounted on a pivoting surface,
be sure vent plug remains above the centerline in all po-
sitions.
If necessary, reposition bearing support and vent
plug as follows:
A. Remove bearing support bolts.
B. Rotate bearing support until vent plug is
positioned correctly and bolt holes are aligned.
C. Evenly tighten bolts to recommended
torque.
5. Hydraulic lines and components that operate the hoist
must be of sufficient size to assure minimum back-pres-
sure at the hoist motor ports. The hydraulic back-pressure
measured at the motor work ports must be less than 100
PSI (690 kPa) at full operating flow.
Back-pressure in ex-
cess of 100 PSI (690 kPa) will shorten motor shaft seal
life and partially release the load-holding brake.
The
standard hoist is supplied with the gear motor internal-
ly drained and connected the drain by-pass port on the
BRADEN brake valve. If high back-pressures are encoun-
tered, the motor should be externally drained directly to
the reservoir and the “DRAIN” port on the brake valve
capped. All piston motors
MUST
be drained directly
to the reservoir. The piston motor case drain port must
NEVER
be exposed to more than 42 PSI (290 kPa); shaft
seal damage will occur.
6. The hoist should be mounted perpendicular to an imagi-
nary line from the center of the drum to the first sheave
to insure even spooling. Make certain the fleet angle does
not exceed 1-1/2 degrees.
TO LOAD
OR
FIRST SHEAVE
A = B
A
B
1/2
MIN
1
1/2
MAX
O
O
FLEET ANGLE
Centerline
VENT PLUG
ABOVE CENTERLINE
This hoist m er
SIONS
BROKE 4012
U.S.A.
SERIAL NO.
76381
BRADEN Gearmatic
HOIST
HOIST INSTALLATION
