DRESSTA TD-25M EXTRA, Руководство по обслуживанию

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SECTION 10C
CYLINDERS
Page 4
TD-25M EXTRA DRESSTA
BLADE LIFT CYLINDER
Fig. 10C.5. Securing Cylinder to Hoist Fig. 10C.6. Relieving Tension on Lock Ring
4. Remove bolts with washer securing cover (20) to gland (13) and tie the cover up to the rod eye
as shown in Fig. 10C.6.
5. Using a brass drift as shown in Fig. 10C.6, drive gland (13) into housing (1) until the tension
of the lock ring (12) is off.
6. Remove three piece lock ring (12) from housing (1) and pull the cylinder rod assembly (21) out
of the housing with the hoist.
7. Remove the piston rod nut (3) as shown in Fig.10C.7.
8. Remove washer (4) and piston (8) from the cylinder rod (21). Remove the relief poppets (9),
wear rings (6), O-rings (5) and piston seal (7) from piston (8).
9. Slide gland (13) from the cylinder rod (21). Remove O-ring (10), backup ring (11), wear ring
(14), O-ring (18), seal ring (17), buffer ring (16) and O-ring (15) from gland (13). Slide cover
(20) off of rod (21) and remove wiper ring (19) from cover.
10. Unscrew bolts securing retainer plates (25 and 26) to the cylinder rod (21) and remove the
retainer plates. Remove O-rings (23) from the bore of bearing (24).
NOTE: It will be necessary to hold the eye end of the rod stationary when removing the nut.
A suggested method is to clamp the eye end of the piston rod in a hydraulic press and use
a torque multiplier as shown in Fig. 10C.7, or an impact tool.
Fig. 10C.7. Removing Piston Rod Nut