TM 5-3810-306-34
SWING GEARBOX INSTALLATION
TOOLS:
Lifting device (500 lb. Capacity)
SUPPLIES:
None
EQUIPMENT CONDITIONS:
Negative battery cable disconnected at shunt.
(Refer to TM 5-3810-306-20.)
Swing lock is engaged. (Refer to TM 5-3810-306-10.)
Hydraulic system pressure relieved.
(Refer to TM 5-3810-306-20.)
REMOVAL:
NOTE
1. REMOVE TWO HYDRAULIC HOSES TO
HYDRAULIC MANIFOLD (5) WHICH BLOCK
If a new gearbox is being installed,
THE REMOVAL OF SWING GEARBOX.
the key stock welded to deck may not
align with grooves in gearbox
2. REMOVE HYDRAULIC LINE (6) FROM TOP OF
housing, therefore, some filing may
OIL COOLER AND PULL HOSE THROUGH
be required.
HOLE IN SUPERSTRUCTURE OUT OF WAY
OF GEARBOX.
c. Install bolts (2) and washers (3). Torque
to 250 ft-lbs (333 Nm). Install the lockwire
3. REMOVE SWING GEARBOX ASSEMBLY.
(1) through bolts in direction that resists
loosening.
a. Disconnect and cap hydraulic lines from
swing motor and swing brake.
d. Connect the hydraulic lines to the gearbox,
motor, and brake as applicable.
b. Remove lockwire (1), bolts (2), and
washers (3) securing swing gearbox to
2. POSITION HYDRAULIC LINE (6) THROUGH
mounting plate. Attach a suitable sling to
HOLE IN SUPERSTRUCTURE AND CONNECT
lifting eyes on cover.
TO OIL COOLER.
c. Attach an adequate lifting device to sling;
3. INSTALL TWO HYDRAULIC
LINES
TO
remove swing gearbox.
HYDRAULIC MANIFOLD (5).
4. CONNECT NEGATIVE BATTERY CABLE AT
INSTALLATION:
SHUNT. (REFER TO TM 5-3810-306-20.)
1. INSTALL SWING GEARBOX ASSEMBLY.
5. START CRANE AND CHECK FOR LEAKS AND
PROPER OPERATION.
a. Attach a suitable sling to lifting eyes on
swing box cover.
END OF TASK
b. Using an adequate lifting device, lift and
position swing box in place on mounting
plate.
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