HYDRAULIC SYSTEM RT880E SERVICE MANUAL
2-82 Published 11-10-2014, Control # 524-00
Maintenance
Disassembly
NOTE: Replace all cylinder seals and O-rings with new
ones anytime the cylinder is disassembled.
1. Remove the capscrews and washers securing the
retaining ring to the barrel.
2. Using a chain wrench, unscrew the cylinder head from
the cylinder barrel.
3. Remove the cylinder rod assembly from the cylinder
barrel and cover the barrel to avoid contamination.
NOTE: Align old seals in order of removal to facilitate
installation of new seals.
4. Remove the guide lock ring at the top of the piston to
gain access to the setscrew securing the piston to the
cylinder rod.
5. Remove the setscrew and discard.
6. Unscrew the piston from the rod.
7. Remove the hydrolock seal assemblies and wear rings
from the outside of the piston.
8. Remove the O-ring and backup rings from the inside of
the piston.
9. Remove the spacer from the rod and the wear ring from
the spacer.
10. Remove the cylinder head from the rod.
11. Remove the O-ring and backup ring from the outside of
the cylinder head.
12. Remove the wear rings, buffer seal, backup rings, rod
seal, and the wiper ring from the inside of the head.
13. If necessary, remove the holding valve from the rod.
Inspection
1. Clean all parts with solvent and dry with compressed air.
Inspect all parts for serviceability.
2. Stone out minor blemishes and polish with fine crocus
cloth.
3. Clean with solvent and dry with compressed air parts
that have been stoned and polished.
4. Inspect the barrel for scoring.
Item Description
1 Barrel
2Piston
3 Setscrew
4 Seal
5 Wear Ring
6O-ring
7 Backup Ring
8Spacer
9Rod
10 Head
11 Wear Ring
12 O-ring
13 Backup Ring
14 Buffer Seal
15 Backup Ring
16 Rod Seal
17 Backup Ring
18 Wiper Ring
19 Holding Valve
20 Plug
21 O-ring
22 Retainer Plate
23 Capscrew
24 Washer
25 Capscrew
26 Capscrew
27 Adapter
CAUTION
Do not use air pressure to remove the cylinder rod. Use
only controlled hydraulic pressure.
Do not damage the cylinder rod chrome surface.
CAUTION
Do not scratch the grooved and gland surfaces.
CAUTION
Clean all surfaces and remove all burrs and nicks.
Replace all damaged or worn parts.
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