DOC-20230111-WA0038.

UPPERSTRUCTURE / Swing Device
Assemble Swing Motor
• Be sure to read “Precautions for Disassembly and
Assembly” thoroughly on page W1-1-1 before
starting the assembly work.
1. Install spherical bushing (1) to rotor (13).
2. Install plungers (3) (7 used) into retainer (2). Apply
hydraulic oil to the plunger hole of rotor (13).
Install the plunger into the rotor.
3. Apply the hydraulic oil to the mating surfaces of
plungers (3) (7 used) and swash plate (4). Install
the swash plate to rotor (13).
4. Press the inner race of bearing (5) into rotor (13)
with a press.
IMPORTANT: After pressing spacer (6), wipe off
excessive LOCTITE between the
spacer and bearing (5).
5. Apply LOCTITE # 515 or # 518 to the interference
surfaces of spacer (6) of rotor (13). Press the
spacer into the rotor with a press.
6. Apply THREEBOND # 1211 to oil seal (7). Press
the oil seal into housing (9) with a press.
7. Press the outer race of bearing (5) into housing
(9) with a press.
IMPORTANT: After installing the rotor (13)
assembly into housing (9), check
that the top of the rotor is 7.5 mm
(0.3 in) below the top of housing (9).
8. Apply grease to the lip of oil seal (7). Install the
rotor (13) assembly into housing (9).
9. Apply the hydraulic oil to friction plates (14) (2
used) and plates (15) (2 used). Install the friction
plates and the plates into housing (9) alternately.
10. Apply the grease to O-ring (8). Install the O-ring to
housing (9).
11. Apply the grease to O-ring (16). Install the O-ring
to piston (17).
IMPORTANT: Press the piston into the housing
until dimension A between both tops
of piston (17) and housing (9) is
equal to the one measured when
disassembling.
12. Apply the hydraulic oil to the outer surface of
piston (17). Install the piston into housing (9) using
supports.
13. Install springs (18) (15 used) into piston (17).
14. Install teflon rings (23) (4 used) and scrowaves (24)
(4 used) to bushings (22) (4 used).
IMPORTANT: Be sure to align the matching marks
when installing valve plate (21).
15. Install bushings (22) (4 used) and valve plate (21)
to cover (26).
16. Press needle bearing (20) to cover (26). Install
retaining ring (19) to the cover.
17. Apply the grease to O-ring (25). Install the O-ring
to cover (26).
W2-6-23