Manitowoc National Crane 500E2 Service Manual

National Crane Published 08/16/19 Control # 112-05 6-1
500E2 SERVICE MANUAL SWING
6
SECTION 6
SWING
SECTION CONTENTS
Swing Gearbox And Brake. . . . . . . . . . . . . . . . . . . 6-1
Disassembly & Assembly Instructions . . . . . . . . . 6-1
Swing Drive Disassembly . . . . . . . . . . . . . . . . . . . 6-1
Tulsa Swing Drive Assembly Procedure. . . . . . . . 6-4
Rotation Stop-mechanical . . . . . . . . . . . . . . . . . . . 6-5
Rotation Stop Adjustment . . . . . . . . . . . . . . . . . . . 6-5
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Torquing Swing Bearing Bolts . . . . . . . . . . . . . . . 6-6
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Swing Bearing Bolts. . . . . . . . . . . . . . . . . . . . . . . . 6-7
Torque Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Bearing Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Bearing Replacement . . . . . . . . . . . . . . . . . . . . . . 6-11
Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
SWING GEARBOX AND BRAKE
Disassembly & Assembly Instructions
This section describes the disassembly and assembly
procedures for the swing gearbox. Item numbers shown in
parentheses throughout this procedure, refer to the exploded
parts breakdown drawing.
Swing Drive Disassembly
1. Remove drive from vehicle and drain gearbox lubricant
by removing the drain plug (26).
2. Remove the motor from the motor adapter (3).
3. Remove the brake assembly from the gear housing
assembly (1) by removing six socket head
capscrews (27).
NOTE: The position of the brake port in conjunction with
the drain and fill holes in the housing for
reassembly.
4. Separate the motor adapter assembly (3) from the brake
housing (2) by removing six capscrews (28).
NOTE: Notice the position of the motor mounting hole in
relation to the brake release port for reassembly.
5. Inspect the motor adapter o-ring (24) for wear. Replace if
necessary.
6. Remove the six springs (15) and the brake driver (8)
from the brake housing (2).
7. Remove retaining ring (37) from the brake piston (5).
8. Remove the stator plates (16) and friction discs (17)
from the brake piston (5). Inspect stator plates for
excessive grooving or burn spots. Also, inspect friction
discs for wear. Replace as required.
9. Remove the piston (5) from the brake housing (2).
NOTE: Notice the position of the dowel pin hole in piston
with the brake release port for reassembly.
A port-a-power can be used to assist in removal of piston by
slowly pressurizing the brake release port until piston clears
the top of the housing.
CAUTION
The motor adapter is spring loaded and the capscrews
should be loosened in a sequence that will allow an even
load distribution on the motor adapter.

Manitowoc National Crane 500E2 Specifications

General

Brand	Manitowoc
Model	National Crane 500E2
Category	Construction Equipment
Language	English