VAT 651 Series - Replacement of Actuator Shaft Seals

MAINTENANCE Series
651
78/99 Edition 2014-07-10 605451EC
7.2.2 Replacement of actuator shaft seals
7.2.2.1 Required tools
• Allen Wrench 2 mm
• Allen Wrench 4 mm
• Allen Wrench 5 mm
• Open end wrench 13 mm
• O-ring removal tool (see chapter: Accessories)
• VAT cleaning tool (see chapter: Accessories)
• Vacuum grease (see chapter: Spare parts)
• Clean room wiper
• Isopropyl alcohol
Electrical power and compressed air is required to perform steps 2 to 9 during
disassembly respectively 9 to 2 during assembly.
Description Required tool
1. Vent both valve chambers.
2. Open the 4 bonnet screws and
remove valve bonnet.
Allen wrench
5 mm
3. Open the valve
Caution: Pay attention plate moves
out!
4. Unfasten mounting screw for
pendulum plate. (For reinstall the
pendulum plate, tighten the
mounting screw to block.)
5. Remove pendulum plate.
mounting screw
for pendulum plate
Open end wrench
13 mm