Disassembly And Assembly Of Center Swivel Joint Assembly - Komatsu PC88MR-10 Shop Manual

50 Disassembly and assembly
Hydraulic system

Disassembly and assembly of center swivel joint assembly

A)
a Special tools
Sym-
Part No.
bol
790-101-2501 Push puller
790-101-2510
790-101-2520
790-101-2540
T 791-112-1180
790-101-2630
790-101-2570
790-101-2560
790-112-2650
Disassembly
(PC88MR-J8E0-530-K-00-A)
1. Remove cover (1).
2. Remove snap ring (2).
3. Pull out swivel rotor (4) and ring (3) from swivel
rotor (5) by using tool T.
4. Remove O-ring (6) and slipper seal (7) from the
swivel shaft.
50-140
Part name
1
Block 1
Screw 1
Washer
1
Nut 1
Leg
2
Washer 4
Nut 2
Adapter
2
Assembly
(PC88MR-J8E0-710-K-00-A)
1. Install slipper seal (7) and O-ring (6) to the
swivel rotor.
2. Place swivel shaft (5) on the block. Install swivel
rotor (4) to the shaft by using the push tool while
tapping the swivel rotor lightly with a plastic
hammer.
Rotor and shaft contact surface:
Grease (G2-LI)
a Take extreme care not to damage the slipper
seal and O-ring when installing the rotor.
3. Install ring (3) and fix it with snap ring (2).
4. Install cover (1) together with the O-ring.
Mounting bolt:
31.4 ± 2.94 Nm {3.2 ± 0.3 kgm}
(PC88MR-J8E0-926-K-00-
PC88MR-10