TM 5-3810-307-24-1-1
SWING MOTOR
DESCRIPTION
The swing motor is mounted on top of the swing
gearbox in the center of the turntable. After the
brake which is located on the top of the swing
brake releases, the motor drives the gearbox through
the brake.
MAINTENANCE
(Text Deleted)
1.
Apply a thin film of silicone RTV sealant
REMOVAL.
between the motor and swing gearbox (Figure 2-9-1)
as follows:
1.
Ensure the swing brake is engaged.
a.
Remove dirt, grease, or moisture from
2.
Clean the port area around the motor. Tag
the surface of the carrier and housing.
and disconnect the hydraulic hoses from the motor
assembly (Figure 2-9-1). Cap or plug all openings.
b.
Dry the surface.
CAUTION
c.
Apply a thin bead, maximum 0.125 in.
Pull straight up on the motor assembly to
(3.175 mm) diameter, completely around one
avoid damaging the splined shaft.
mating surface and all fasteners holes to
ensure complete seal and prevent leaks.
3.
Remove the bolt and washers securing the
motor and lift the swing motor free.
d.
Assemble the components immediately
to permit silicone RTV gasket material to
spread evenly.
INSTALLATION.
CAUTION
Use care when engaging the swing
WARNING
motor drive gear with the brake. Do not
Minor concentrations of acetic acid vapor
force the shaft to engage.
may be produced during application.
Adequate ventilation should be provided
2.
Install the swing motor on the swing brake with
when silicone RTV is applied in confined
the capscrews and washers. Torque the bolts to 121
areas.
lbs-ft (164.0 Nm).
3.
Connect the hydraulic hoses to the swing
WARNING
motor.
Eye contact with these silicone RTV
materials may cause irritation, if eye
TEST.
contact takes place, flush the eyes with
water for 15 minutes and have the eyes
1.
Test swing of superstructure in each direction.
examined by a doctor.
Stop and start swing several times.
2.
Inspect for hydraulic leaks and repair as
necessary.
2-9-6 C-1
