6-8
Published 01-29-2014, Control # 496-00
SWING SYSTEM TMS800E SERVICE MANUAL
SWING MOTOR
Description
The swing motor is mounted on the swing brake housing and
drives the swing gearbox through the brake assembly. The
swing motor is a hydraulic piston type. The motor has two
ports for connection to the hydraulic system.
Maintenance
Removal
1. Ensure the swing brake and swing lock are engaged.
2. Clean the port area around the motor. Tag and
disconnect the hydraulic hoses from the motor
assembly. Cap or plug all openings.
3. Unscrew the drain plug, remove the breather and
dipstick to ensure that all oil has been removed. After the
oil has been drained, replace the drain plug and any
other plugs that may have been removed.
4. Remove the capscrews securing the motor and lift the
swing motor free of the motor support plate. Remove
and discard the O-ring from the groove in the swing
brake.
Installation
1. Install a new O-ring in the groove of the swing brake.
Position the swing motor on the swing brake, engaging
the shaft with the brake input shaft.
2. Apply Loctite® 243 to the capscrew threads. Install the
capscrews and secure the motor to the brake housing.
Tighten the capscrews, refer to Fasteners and Torque
Values, page 1-13.
3. Connect the hydraulic lines to the swing motor as tagged
during removal.
Test
1. Test swing of superstructure in each direction. Stop and
start swing several times.
2. Inspect for hydraulic leaks and repair as necessary.
CAUTION
Oil can be hot and cause burns.
CAUTION
Pull straight up on the motor assembly to avoid damaging
the splined shaft.
CAUTION
Use care when engaging the swing motor drive gear, do
not force the shaft to engage.
Reference Only
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