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10.Hydraulic swivel piston
Hydraulic swivel piston
PREPARATIONS
8 mm
• Remove orbital motor and flanges as de-
scribed in previous chapter.
Dismantling swivel piston
1. Remove piston clamping flange (I)
• remove 9 × fasteners
– 8 mm Allen wrench
Reassembling: use thread locking compound
T1 (Medium) to fasteners.
51 Nm
Tightening torque: 51 Nm
2. Remove flange and roller bearing
I. lift off clamping flange
II. take care of radial shaft seal
– replace if worn or damaged
III. remove needle bearing with sup-
port washers – one on either side
3. Gently pull out swivel piston
4. Swivel female unit
• hydraulic fluid openings and groves
+ hydraulic fluid pressure
- hydraulic fluid return
G grease flow from head nipple
5. Swivel male unit
• hydraulic fluid openings
• grease openings and groves
6. Principles for flow of hydraulic li-
quid and grease:
• hydraulic pressure (+) and return (-)
lines
• lubricating grease (G) line from
nipple through openings and groves
Continue dismantling on next page...
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Troubleshooting
