Mesto jamesbury Valv-Powr VPVL, Инструкция по установке, обслуживанию и эксплуатации

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IMO-553 EN 5
B. Lift position indicator (19) off shaft; it may be
necessary to pry gently with a screwdriver.
2. Removal of Stop Cap Screws (02), (Figure 4):
A. Remove both stop cap screws (02) together with
nut (04) and washer (03).
B. Remove stop screw o-rings (11) and discard if
replacing all soft parts.
3. End Cap (30) Disassembly, (Figure 5):
A. Remove the end cap bolts (13) in the sequence
shown in (Figure 5). CAUTION: When disassem-
bling a spring return actuator, the end cap (30)
should be loose after unscrewing end cap bolts
(13) 4-5 turns. If there is still force on the end cap
(30) after 4-5 turns of the end cap bolt (13), this
may indicate a damaged spring cartridge and
any further disassembly should be discontinued.
Further disassembly of the end-caps may result
in serious personal injury. Return actuator to
Metso for further maintenance.
B. For spring return actuators, remove spring cartridg-
es (17).
Figure 5
50
60
40
40
Figure 6
C. Remove end-cap o-rings (14) and discard if replacing
all soft parts.
4. Piston (40) Disassembly, (Figure 6):
A. Holding the body (50) in a vice (or similar device),
rotate the drive shaft (60) until the pistons (40)
are released. CAUTION: Air Pressure should not
be used to remove the pistons from the body.
Clean and inspect the piston teeth for signs of wear.
Replace piston if wear seems excessive.
B. Remove piston o-ring seal (16) using a screwdriver.
Remove the piston head (15) and piston back (5)
bearings. Discard bearings if replacing all soft parts.
5. Drive Shaft (60) and Bearing (6, 7) Disassembly,
(Figure 7):
A. Remove spring clip (18) carefully. Remove external
thrust bearing (8) and thrust washer (10).
B. Apply downward force to top of drive shaft (60)
until it is partially out of the bottom of the body
(50) and the octi-cam (1) and internal thrust bearing
(8) can be removed. Remove the octi-cam (1) and
internal thrust bearing (8). Push the drive shaft (60)
completely out of the bottom of the body (50). If the
shaft (60) does not move freely, gently tap with a
plastic mallet.
C. Remove the top and bottom shaft bearings (6, 7)
and top and bottom shaft o-rings (21, 22). Discard if
replacing all soft parts.
6. Cleaning and Inspection.
A. When all components are disassembled, those
not being replaced should be properly cleaned and
inspected for wear prior to re-assembly.
18
1
8
50 8
10
60
Figure 7