OPERATING MANUAL

DRILL STEM VALVE ACTUATOR

MODEL: ADSV 8.45
REVISION 4

COPYRIGHT © 2016 MECHALTA GROUP LTD. ALL RIGHTS RESERVED

 TABLE OF CONTENTS

1. M AINTENANCE ....................................................................................................................... 3
1.1 Daily Lubrication ........................................................................................................... 3
1.2 Weekly Lubrication ....................................................................................................... 4
2. P ARTS L IST A ND A CTUATOR D RAWINGS .................................................................................. 6
2.1 Main Assembly ............................................................................................................. 6
2.2 Sleeve Assembly ......................................................................................................... 12
2.3 Bearing Housing Assembly ......................................................................................... 14
2.4 Manifold Assembly ..................................................................................................... 16
2.5 Hydraulic Schematic ................................................................................................... 17
2.6 Anti-Rotation Mount .................................................................................................. 18
3. A CTUATOR I NSTALLATION ..................................................................................................... 19
4. A CTUATOR R EMOVAL ........................................................................................................... 40

MECHALTA GROUP LTD. Page 2 of 43

1. M AINTENANCE
To ensure proper operation of the actuator and to increase the service life of bearings, the unit
needs frequent lubrication. Pump grease through the bearing plate grease points twice daily,
and the crank grease points once weekly.

1.1 Daily Lubrication

1. Using a grease gun, pump

grease through the upper
bearing plate grease nipple
(10 pumps), while rotating
at minimum speed.

2. Using a grease gun, pump

grease through the lower
bearing plate grease nipple
(10 pumps), while rotating
at minimum speed.

MECHALTA GROUP LTD. Page 3 of 43

1.2 Weekly Lubrication

1. Cut and remove safety

wire from the upper rear
RH enclosure. Using a
9/16” wrench, remove the
upper rear RH enclosure
from the upper bearing
plate. This needs to be
done to gain access to the
cranks

2. Slowly rotate the actuator

until the grease nipples are
accessible from the back of
the unit, as shown. Using a
grease gun, apply grease to
both cranks (2 pumps).

MECHALTA GROUP LTD. Page 4 of 43

 3. Re-install the upper rear
RH enclosure using 3/8-16
x 7/8 hex head screws.
Torque to 32 ft-lb. Wire-tie
the two bolts to the bolt on
the upper front enclosure
as shown.

MECHALTA GROUP LTD. Page 5 of 43

2. P ARTS LIST AND ACTUATOR DRAWINGS
2.1 Main Assembly

115228-03-ACTUATOR, DRILL STEM VALVE, 8.45

ITEM PART NUMBER DESCRIPTION QTY
1 115272-01 MANDREL, 8.45 1
2 115002 BEARING, JOURNAL, FLANGED 2
3 115269 RING, WEDGE, 8.45 1
4 115231-02 LOCK-RING, 8.45-8.88 1
5 115232 RING, BRG. RET., INNER, 8.45-8.88 2
6 115241 SEAL, V-RING 3
7 115233-02 SLEEVE, ASSEMBLY, 8.45-8.88 1
8 115267 CRANK, RH, .875, M&M 8.45 1
9 115268 CRANK, LH, .875, M&M 8.45 1
10 115236-02 HOUSING, BEARING, 8.45-8.88 2
11 100017-01 CYLINDER, HYD, 1.25 BORE, 2.88 STROKE, .75 ROD 3
12 115384 GUIDE-PLATE 1
13 115385 SPACER, GUIDE-PLATE 1
14 115265 MANIFOLD, HYDRAULIC, ASSY 1
15 115276 HOSE 1, HYD, ASSY 2
16 115277 HOSE 2, HYD, ASSY 2
17 115278 HOSE 3, HYD, ASSY 1
18 115279 HOSE 4, HYD, ASSY 1
19 115327-01 PLATE, RETAINING, UPR 2
20 115331-01 PLATE, RETAINING, LWR, WLDMT 1
21 115274-01 RETAINER, INNER RING, UPR 1
22 115421 PLATE, RETAINER, UPR, 8.45 1
23 115430 RETAINER, INNER RING, LWR, 8.45 1
24 115431 PLATE, RETAINER, LWR, 8.45 1
25 115432 SPACER, LWR RETAINER, 8.45 1
26 115416 TAG KIT, MECHALTA 1
27 115460 ENCLOSURE, UPR, FRONT, 8.45-8.88, WLDMT 1
28 115463 ENCLOSURE, LWR, FRONT, 8.45-8.88 1
29 115464 ENCLOSURE, UPR, REAR, RH, 8.45-8.88, WLDMT 1
30 115467 ENCLOSURE, LWR, REAR, RH, 8.45-8.88 1
31 115468 ENCLOSURE, UPR, REAR, LH, 8.45-8.88, WLDMT 1
32 115471 ENCLOSURE, LWR, REAR, LH, 8.45-8.88, WLDMT 1
33 115481 SPACER, MANIFOLD 1
34 115483 GREASE ZERK 1/8" NPT STRAIGHT 2
35 115484 SCREW, HEX HD, 3/8-16 X 1 1/2 LG, GR8, W HOLE 10
36 115485 SCREW, HEX HD, 3/8-16 X 1 3/4 LG, GR8, W HOLE 2
37 115486 LOCK-WASHER, NORD-LOCK NL3/8" 12
38 115487 SCREW, HEX HD, 7/16-14 X 1-1/4 LG, GR 8, W HOLE 2
39 115488 LOCK-WASHER, NORD-LOCK NL11 2
40 116101 SCREW, HEX HD, 3/8-16 X 7/8 LG, GR8, W HOLE 16
41 115490 LOCK-WASHER, REGULAR, 3/8 16
42 115491 WASHER, FLAT, 3/8" 16
43 115492 EYEBOLT, 3/8-16 X 1 1/4, FASTENAL 42312 2

MECHALTA GROUP LTD. Page 6 of 43

 44 115493 LOCK-WASHER, NORD-LOCK NL5 4
45 115494 SCREW, SCKT HD, #10-24 X 3/8 LG, W HOLE 2
46 115495 SCREW, SCKT HD, #10-24 X 1 LG, W HOLE 2
47 115496 LOCK WASHER, NORD-LOCK NL1/4" 4
48 115497 SCREW, HEX HD, 1/4-20 X 1/2 LG, GR8, W HOLE 4
49 115498 CONNECTOR, STRAIGHT, ORFS/SAE-ORB, PARKER 4 F5OLO 8
50 115499 PLUG, HOLLOW-HEX, 7/16-20, PARKER 4 HP5ON 2
51 116000 FITTING, 90, SWIVEL, 1/4 ORFS, PARKER 4 C6LO-S 4
52 116001 ELBOW 45, 1/4 ORFS X 1/4 SAE-ORB, PARKER 4-V5OLO-S 2
53 116100 CAP, 1/4 ORFS, PARKER 4 FNL-S 2

MECHALTA GROUP LTD. Page 7 of 43

MECHALTA GROUP LTD. Page 8 of 43
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MECHALTA GROUP LTD. Page 11 of 43
2.2 Sleeve Assembly

115233-02-SLEEVE, ASSEMBLY, 8.45-8.88

ITEM PART NUMBER DESCRIPTION QTY
1 115234-02 SLEEVE, MOVING, 8.45-8.88 1
2 115009 ROLLER, TRACK, YOKE 8
3 115010-01 PIN, ROLLER 8
4 115235-01 COVER, 8.45-8.88 2
5 115303 INSERT, WEAR, SLEEVE 2
6 115317 SHIM-PACK, STOP, UPR 4
7 115318 SHIM-PACK, STOP, LWR 2
8 115315 STOP, CRANK, UPR 2
9 115316 STOP, CRANK, LWR 2
10 116002 SCREW, SCKT, CSUNK HD, 1/2-20 X 1 LG 4
11 116003 RING, RETAINING, INTERNAL, .50, TRUARC N5000-50 8
12 115479 RING, RETAINING, INTERNAL, 1.00, TRUARC N5000-100 4
13 116004 LOCK-WASHER, 5/16, NORD-LOCK NL8 8
14 116005 SCREW, HEX HD, 5/16-18 X 7/8 LG W HOLE 4
15 116017 SCREW, HEX HD, 5/16-18 X 1 3/4 LG W HOLE 4
16 115480 SCREW, SCKT, BUTTON HD, 1/4-20 X 3/8 LG 4

MECHALTA GROUP LTD. Page 12 of 43

MECHALTA GROUP LTD. Page 13 of 43
2.3 Bearing Housing Assembly

115236-02-HOUSING, BEARING, 8.45-8.88

ITEM PART NUMBER DESCRIPTION QTY
1 115237 RING, BRG. RET., OUTER, 8.45-8.88 1
2 115238-02 PLATE, BEARING, 8.45-8.88 1
3 115016-01 NUT, BEARING RETAINER 3
4 115239 BEARING, BALL, FOUR-POINT CONTACT 1
5 115348 BEARING, SPHERICAL 3
6 115359 SPACER, SPHERICAL BEARING 3
7 115360 SPACER, CYL BOLT 3
8 116007 SCREW, SCKT HEAD, 1/2-20 X 1 1/2 LG 3
9 116008 SCREW, SCKT HEAD, 1/4-28 X 7/8 LG 24
10 115483 GREASE ZERK 1/8" NPT STRAIGHT 1
11 116009 LOCK-WASHER, HIGH-COLLAR, 1/2 3
12 116010 SCREW, SET, SOCKET, CUP, #8-32 X 5/8 LG 3
13 116011 RING, RETAINING, 0.777, TRUARC N5000-77 3

MECHALTA GROUP LTD. Page 14 of 43

MECHALTA GROUP LTD. Page 15 of 43
2.4 Manifold Assembly

115265-MANIFOLD, HYDRAULIC, ASSY

ITEM PART NUMBER DESCRIPTION QTY
1 115266 MANIFOLD, HYD, MACH 1
2 116018 CHECK VALVE 1
3 116019 RELIEF VALVE 1
4 116020 LOCK WASHER, 3/8, HI-COLLAR 2
5 116146 SCREW, SCKT HEAD, 3/8-16 X 2 LG 2
6 116022 NUT, HEX, 3/8-16 UNC 2
7 115498 CONNECTOR, STRAIGHT, ORFS/SAE-ORB, PARKER 4 F5OLO 4
8 115499 PLUG, HOLLOW-HEX, 7/16-20, PARKER 4 HP5ON 2

MECHALTA GROUP LTD. Page 16 of 43

2.5 Hydraulic Schematic

 A motor spool hydraulic directional control valve must be used with the actuator to
release pressure on cylinders during rotation
 Circuit operating pressure to be between 1500 and 2500 psi
 Set the relief valve to 500 psi cracking pressure

MECHALTA GROUP LTD. Page 17 of 43

2.6 Anti-Rotation Mount

115407-MOUNT, ANTI-ROTATION, 8.45-8.88

ITEM PART NUMBER DESCRIPTION QTY
1 115406 PLATE, ANTI-ROTATION, 8.45-8.88 1
2 115405 PLATE, WLDMT, ANTI-ROTATION, 8.45-8.88 1
3 115310 WASHER 2
4 116034 LOCK WASHER, NORD-LOCK NL3/8" 6
5 116034 SCREW, HEX HEAD, 3/8-16 X 1 1/4 LG, SAE GRADE 8, W HOLE 2
6 115489 SCREW, HEX HD, 3/8-16 X 3/4 LG, GR8, W HOLE 4

MECHALTA GROUP LTD. Page 18 of 43

3. A CTUATOR INSTALLATION
NOTE:
If you cut a wire or cable tie to remove any parts from the actuator, re-apply the wire or cable
tie afterwards.

1. Place the valve on a flat

clean surface in an upright
position as shown. Remove
the top cap.

2. Using a 7/8" Allen key,

ensure the valve is open by
rotating clockwise as
shown in the picture to the
left.

MECHALTA GROUP LTD. Page 19 of 43

 3. Remove all upper and
lower enclosures from the
actuator using a socket
wrench with a 9/16”
socket.

4. Remove the two internal

retaining rings from the
sleeve cover. Repeat this
process for the other cover
on the opposite side.

5. Use a socket wrench with a

5/16” hex insert to remove
both 1/2-20 X 1.00”
countersunk screws from
the sleeve cover. Repeat
this process for the other
side.

MECHALTA GROUP LTD. Page 20 of 43

 6. Remove both sleeve
covers. Place the covers,
countersunk screws, and
internal retaining rings off
to the side.

7. Remove both cranks from

the flanged bushings in the
mandrel.

8. Have the actuator in the

OPEN
open position (cylinders
extended) with the crank
wear inserts positioned to
the right of the bushing.
WEAR INSERT TO Make sure the valve and
THE RIGHT
sleeve assembly are
aligned in a way that when
the crank rotates within
EXTENDED the bushing, it will rotate
clockwise to extend the
hydraulic cylinders and
open the valve.

MECHALTA GROUP LTD. Page 21 of 43

 9. Using a socket wrench with
a 9/16” socket, remove the
ten 3/8-16 X 1.50” hex
head screws and the two
3/8-16 X 1.75” hex head
screws from the lock-ring.

10. Remove the retainer plate

and inner retaining ring
from the lock-ring as
shown.

11. Remove the lock-ring from

the actuator assembly.

MECHALTA GROUP LTD. Page 22 of 43

 12. Remove the ring wedge
from the actuator
assembly.

13. Wipe down the top surface

of the mandrel with a small
work towel to clean up any
unwanted copper coat.

14. Attach crane hooks to both

eyebolts located on the
upper bearing housing and
lift the actuator above the
valve as shown. Make sure
the actuator is in the open
position (cylinders
extended), and carefully
lower it over the top of the
valve.

MECHALTA GROUP LTD. Page 23 of 43

 15. Lower the actuator until
the bushing hole in the
mandrel is aligned with the
valve stem as shown in the
picture to the left.

16. Insert the hex end of the

positioning tool (Part No.
116102) through the
bushing and into the valve
stem. Use the sliding
weight to get full
engagement.

17. Unscrew the slide hammer

tool from the hex insert.
Leave the hex insert within
the valve stem as shown in
the picture to the left.

MECHALTA GROUP LTD. Page 24 of 43

 18. Repeat steps 16 and 17 for
the other side of the
actuator. Make sure there
are two hex inserts
engaged with the valve
stem.

19. Insert two equally thick

shims between the bottom
inner diameter of the
mandrel and the valve
outer surface to ensure the
actuator is centered.

MECHALTA GROUP LTD. Page 25 of 43

 20. Place the ring wedge back
on the top of the mandrel
by sliding it down over the
top of the valve. Make sure
the slot is between two
3/8-16 tapped holes as
shown.

21. Place the lock-ring back on

top of the mandrel as
shown. Make sure the slots
on the bottom of the lock-
ring align with the
retaining plates.

22. Place the retainer plate

and inner retaining ring
back on the lock-ring as
shown.

MECHALTA GROUP LTD. Page 26 of 43

 23. Take the ten 3/8-16 X
1.50” and the two 3/8-16 X
1.75” hex head screws and
hand-thread them back
into the lock-ring.
Remember to include the
twelve Nord-lock washers
as well.

24. Torque tighten each screw

in a star-like pattern in
three increments: 12 ft-lb,
20 ft-lb, and 32 ft-lb. Make
sure all screws are
tightened to the specified
torque before proceeding
to the next increment (12
ft-lb, then 20 ft-lb, then 32
ft-lb).

25. Remove both shims from

underneath the actuator
once the 3/8-16 screws are
torque tightened.

MECHALTA GROUP LTD. Page 27 of 43

 26. Remove the two hex
inserts from both sides of
the actuator using the slide
hammer part of the
positioning tool (Part No.
116102).

27. Place cranks into both

bushings by hand. Make
sure each crank is fully
engaged with the actuator
and the valve stem. If
required, use the slide
hammer and hex insert to
provide the force
necessary to ensure full
engagement.

28. Ensure the valve is fully

open by placing a 7/8"
Allen key within one of the
cranks and rotating
clockwise. Loosen the
5/16-18 X 1.00” hex head
screws to allow the upper
crank stops on both sides
to engage the cranks as
shown.

MECHALTA GROUP LTD. Page 28 of 43

 29. Loosen the 5/16-18 X 1.50”
hex head screws on both
sides of the sleeve to
provide room for shim
inserts under the lower
crank stops.

30. Insert shims between the

upper crank stop and
sleeve to keep the stop in
place once the hex head
screws are tightened again.
Add shims appropriately to
both sides.

31. Using a 1/2" wrench,

tighten the 5/16-18 X 1.00”
hex head screws with a
torque value of 20 ft-lb to
the upper crank stop.
Repeat this process for the
other side.

MECHALTA GROUP LTD. Page 29 of 43

 32. Close the valve by rotating
the 3/4" Allen key counter
clockwise. Once the valve
is fully closed, raise the
lower crank stops on both
sides so that they engage
the cranks as shown.

33. Insert shims between the

lower crank stop and
sleeve to keep the stop in
place once the hex head
screws are tightened again.
Add shims appropriately to
both sides.

34. Using a 1/2" wrench,

tighten the 5/16-18 X 1.50”
hex head screws with a
torque value of 20 ft-lb to
the lower crank stop.
Repeat this process for the
other side.

MECHALTA GROUP LTD. Page 30 of 43

 35. Place a cover back over the
sleeve as shown in the
picture to the left. Repeat
this process for the other
side.

36. Place the 1/2-20 X 1.00”

countersunk screws back
into the sleeve as shown.
Use a socket wrench with a
5/16” hex insert to tighten
each screw with a torque
value of 24 ft-lb. Repeat
this process for the other
side.

37. Place the internal retaining

rings back into the sleeve
cover as shown in the
picture to the left. Repeat
this process for the other
side.

MECHALTA GROUP LTD. Page 31 of 43

 38. Install all lower enclosures
onto the lower bearing
housing with the 3/8-16 X
7/8" hex head screws. Use
a 9/16” wrench to tighten
each screw with a torque
value of 32 ft-lb.

39. Install all upper enclosures

onto the upper bearing
housing with the 3/8-16 X
7/8" hex head screws. Use
a 9/16” wrench to tighten
each screw with a torque
value of 32 ft-lb.

40. Wire tie the 3/8-16 X 7/8”

hex head screws together,
to connect the upper rear
RH and the upper rear LH
enclosures to the upper
front enclosure as shown
in the picture to the left.

MECHALTA GROUP LTD. Page 32 of 43

 41. Wire tie the 3/8-16 X 7/8”
hex head screws together,
to connect the lower rear
RH and lower rear LH
enclosures to the lower
front enclosure as shown
in the picture to the left.

42. Wire tie the two 3/8-16 X

7/8” hex head screws on
the upper front enclosure
to the retaining nut on the
upper bearing housing as
shown in the picture to the
left.

43. Wire tie the two 3/8-16 X

7/8” hex head screws on
the lower front enclosure
to the retaining nut on the
lower bearing housing as
shown in the picture to the
left.

MECHALTA GROUP LTD. Page 33 of 43

 44. Wire tie the bottom right
retaining nut to the 3/8-16
X 7/8” hex head screw on
the lower rear RH
enclosure as shown.

45. Wire tie the bottom left

retaining nut to the 3/8-16
X 7/8” hex head screw on
the lower rear LH
enclosure as shown.

46. Think of the twelve 3/8-16

screws located on the top
of the actuator as the
hours on a clock (Refer to
step 48). Pick screws 4 and
9, and connect them to the
bearing ring retainer with
safety cable as shown. Cut
off the ends. Use wire tie
as an alternative to cable if
necessary.

MECHALTA GROUP LTD. Page 34 of 43

 47. Wire tie the rest of the
3/8-16 X 1.50” and 3/8-16
X 1.75" screw heads,
connecting them together
in pairs (12 with 1, 2 with
3, 5 with 6, 7 with 8, and
10 with 11). Screws 4 and 9
will be separately attached
to the bearing ring retainer
with safety cable. See
below.

48. The schematic

to the left
portrays how
the 3/8-16
hex head
screws should
be wire tied.

MECHALTA GROUP LTD. Page 35 of 43

 49. Install the actuator and
OPEN SIDE valve to the top drive
system. Connect the
hydraulic hoses as shown
(open and closed sides).
Make sure to remove the
eyebolts from the top
bearing housing and the
Parker ¼ ORFS Caps from
the hydraulic manifold
CLOSED SIDE prior to connecting the
hydraulic hoses from the
HPU. Make sure the two
7/16 X 1.25” hex head
screws that keep the guide
plate attached to the top
bearing housing are wire
tied together (see step 57).
Also make sure the guide
plate, manifold spacer, and
manifold are cable tied (as
shown in step 57).

50. Place the anti-rotation

plate (Part No. 115406) on
the upper bearing housing
as shown to the left. Retain
the anti-rotation plate to
the bearing housing by
hand tightening two 3/8-16
X 1.25” hex head screws
with 3/8” Nord-locks as
shown in the picture to the
left.

MECHALTA GROUP LTD. Page 36 of 43

 51. Tighten the two 3/8-16 X
1.25” hex head screws
using a 9/16” wrench at a
torque of 32 ft-lb. Don’t
forget to include the 3/8”
Nord-locks before
tightening the screws.

52. Place the anti-rotation

weldment plate (Part No.
115405) on top of the
fastened plate from the
previous step. Retain the
weldment plate using four
3/8”-16 X 3/4" hex head
screws with four 3/8”
Nord-locks and two flat
washers (Part No. 115310).
Hand tighten each 3/8-16 X
3/4" screw to keep the
weldment plate from
falling off.

MECHALTA GROUP LTD. Page 37 of 43

 53. Once the four 3/8-16 X
3/4" are hand tightened,
slide the weldment plate
towards the backup
wrench on the top drive.
Allow there to be a 1/8”
1/8” GAP gap between the
weldment plate and the
backup wrench surface as
shown in the picture to the
left. Make sure there’s an
even gap all along the
weldment plate and
backup wrench.

54. Using a 9/16” wrench,

torque tighten the four
3/8-16 X 3/4" hex head
screws at 32 ft-lb. Make
sure there is a Nord-lock
for each screw and a
washer (Part No. 115310)
for each set of screws on
each side of the weldment
plate. Keep the 1/8” gap
between the weldment
plate and the backup
wrench while tightening
the screws.

MECHALTA GROUP LTD. Page 38 of 43

 55. Wire tie the left bearing
retainer nut to one of the
3/8-16 X 1.25" hex head
screws used to attach the
anti-rotation to the bearing
housing. Repeat the for the
right bearing retainer nut
as shown in the picture to
the left.

56. Wire tie the two 3/8-16 X

3/4" hex head screws on
the anti-rotation mount
together as well. Repeat
for the other side of the
anti-rotation mount.

57. Cable tie the guide plate

through the anti-rotation
assembly to the top
bearing plate as shown in
the picture to the left. Also
make sure the guide plate,
manifold spacer, and
manifold is cable tied
together.

MECHALTA GROUP LTD. Page 39 of 43

4. A CTUATOR REMOVAL
Ensure two 3/8-16 eyebolts are installed in the top bearing housing as per BOM and drawing in
section 2.1. Support the actuator assembly with a crane using hooks attached to the eyebolts.
Place the valve and actuator assembly on a flat clean surface in the upright position.
CAUTION: Ensure the actuator assembly is supported by a crane at all times during its
removal. Too much slack in the belt or chain can cause the actuator to drop once step 6 is
completed.

1. Ensure valve is in the open

position with all lower
enclosures clearly visible.
Using a 9/16” wrench,
remove all upper and
lower enclosures from the
actuator assembly. Make
sure the safety wires are
cut prior to removal. Place
the enclosures, lock-
washers, flat washers, and
the 3/8-16 X 7/8” hex head
screws off to the side.

2. Remove the two internal

retaining rings from the
sleeve cover as shown in
the picture to the left.
Repeat process for the
other side.

MECHALTA GROUP LTD. Page 40 of 43

 3. Use a socket wrench with a
5/16” hex insert to remove
both 1/2 X 1.00”
countersunk screws from
the sleeve cover. Repeat
this process for the other
side.

4. Remove both covers from

the sleeve once the
countersunk screws have
been unscrewed. Place the
covers, countersunk
screws, and internal
retaining rings off to the
side.

5. Remove both cranks from

the assembly. Use your
hands to slide each crank
out from the flanged
bushing in the mandrel. If
more force is required,
utilize the positioning tool
(Part No. 116102) to
remove the cranks.
CAUTION: Support the
actuator assembly using
crane hooks attached to
both eyebolts after the
removal of the cranks.

MECHALTA GROUP LTD. Page 41 of 43

 6. Use a socket wrench with a
9/16” socket to remove
ten 3/8-16 X 1.50” hex
head screws and two 3/8-
16 X 1.75” hex head screws
from the lock-ring. Remove
the retainer plate and
inner retaining ring as well
as all Nord-locks and
screws from the lock-ring.

7. Remove the lock-ring from

the assembly by sliding it
over the top of the valve as
shown to the left.

8. Remove the ring wedge

from the assembly by
sliding it over the top of
the valve as shown to the
left.

MECHALTA GROUP LTD. Page 42 of 43

 9. Carefully raise the actuator
assembly off the valve
using a crane. Make sure
the crane hooks are
securely attached to the
eyebolts prior to lifting the
actuator.

10. Lift the actuator assembly

off the top of the valve as
shown in the picture to the
left. Steady the valve to
prevent it from falling over.

11. Place the actuator down

on a flat clean surface and
remove the crane hooks
and belt/chain from the
eyebolts.

MECHALTA GROUP LTD. Page 43 of 43