Reassembly - Doosan DX140R Shop Manual

REASSEMBLY

1. Prelubricate O-rings with hydraulic oil, white grease or
petroleum jelly.
Apply a very light film of white grease or petroleum jelly to
the lower rim of the stem and inner surface of the center
swivel body. Apply slow, even-handed pressure, using both
hands, to slowly push the stem into the body. Seals may be
damaged if the stem is pushed in too quickly.
2. Thoroughly clean all other component surfaces of dirt or
grease before reassembly.
3. Reverse disassembly steps for reassembly.
4. Clean threads of fasteners before preapplying Loctite #243
to the threads, and before torquing the thrust plate and
cover bolts.
5. Prefill the center swivel with clean hydraulic fluid before
reassembly of high-pressure and drain line piping. Clean
and prefill piping line ends to reduce the amount of air in
the system. Bleed air from the hydraulic system and verify
hydraulic tank fluid level before returning the excavator to
service.
Center Joint (Swivel)
Page 10
CAUTION
SP000029