Keeping the World Flowing
51
16.0 Periodic Maintenance
PM-LP-007
Page: 1/10
Component:
Single-acting actuator
Task:
Hydraulic cylinder for manual override seals replacement
Equipment, Tools, Materials:
Spare seals
Wrench
Lifting tools
Project documentation
Warnings:
Description:
Note: the following instructions apply to single-acting actuator unless otherwise specified.
Cut-off power supply and electric power supply (if present) before performing any operation.
Preliminary actions
1. Verify Actuator is in the fail position (single acting) and not pressurized.
2. Remove actuator from valve (see Removal from Valve, page 11)
3. Position the actuator on a workbench (if possible) or in a stable position and in a clean and closed area
4. Remove any control equipment (if present). Refer to the project specific documentation
5. Remove pipes
6. Remove plug (D1)
7. Discharge oil
8. Tighten plug (D1) back in its seat with a wrench
9. Remove hydraulic pipe (P)
10. Unscrew bolts (S) and remove hydraulic pump assembly (3)
Used hydraulic fluid must be disposed of safely.
P
S
3
D1
A4
US
US
A4
US
A4
A4
US
Summary of Contents for LP/S Series
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