172-65169MA-08 (MC-COS Multi-control Valve) 28 May 2010
29
Reassembly
Assemble the unit using the same procedure as used for disassembling it; but in
reverse order. Observe the following precautions:
1. The PTFE gaskets may be re-used if free from fault, crushing or deformation.
2. Apply anti-seize to the threaded portion of screws and bolts and adjustment screw.
Apply a small amount of anti-seize to the threads of the main valve seat, pilot
valve seat and pilot screen holder. Apply anti-seize carefully to ensure it does not
come into contact with other parts.
3. Fasten the bolts one at a time in an alternating diagonal pattern to provide uniform seating.
4. After assembly, make sure that the piston and the pilot valve operate smoothly without binding.
1) Fit the piston ring to the outside
of the tension ring.
2) The ring gaps should be opposite
each other.
5. Standard fastening torque and the distance across flats to be used are as follows:
Size
Width Across Flats
Tightening Torque
Part
mm (in) mm (in) N·m
(lbf·ft)
Bolt for Mounting
Plate/Spring Housing
All 17
(
21
/
32
) 30 (22)
Bolt for Spring
Housing/Pilot Body
All 17
(
21
/
32
) 40 (29)
Pilot Valve Seat
All
19
(
3
/
4
) 70 (51)
Pilot Screen Holder
All
24
(
15
/
16
) 40 (29)
15 – 40 (
1
/
2
– 1
1
/
2
)
17 (
21
/
32
) 60 (44)
Bolt for
Pilot Body/Main Body
50 (2) 19 (
3
/
4
) 70 (51)
Bolt for Pilot Body/Pilot
Cover
65 – 100 (2
1
/
2
– 4)
17
(
21
/
32
) 60 (44)
65, 80
(2
1
/
2
, 3)
19
(
3
/
4
) 70 (51)
Bolt for
Pilot Cover/Main Body
100 (4) 24 (
15
/
16
) 150 (110)
15 – 40 (
1
/
2
– 1
1
/
2
)
17 (
21
/
32
) 60 (44)
50 – 80
(2 - 3)
19
(
3
/
4
) 70 (51)
Bolt for
Main Body/Trap Body,
Trap Body/Trap Cover
100 (4) 24 (
15
/
16
) 150 (110)
15, 20
(
1
/
2,
3
/
4
) 36 (1
7
/
16
) 100 (73)
25 (1) 41 (1
5
/
8
) 125 (92)
32, 40
(1
1
/
4
, 1
1
/
2
)
60 (2
3
/
8
) 250 (185)
Main Valve Seat
50 (2) 70 (2
3
/
4
) 300 (220)
65, 80
(2
1
/
2
, 3)
13
(
1
/
2
) 30 (22)
Bolt for
Main Valve Seat
100 (4) 17 (
21
/
32
) 40 (29)
15, 20
(
1
/
2,
3
/
4
) 8 (
5
/
16
) 7 (5)
25 – 40 (1 – 1
1
/
2
)
10 (
3
/
8
) 10 (7)
Bolt for
Float Cover
50 – 100
(2 – 4)
13
(
1
/
2
) 20 (15)
15, 20
(
1
/
2,
3
/
4
) 11 (
7
/
16
) 10 (7)
25 – 40 (1 – 1
1
/
2
)
13 (
1
/
2
) 15 (11)
50 – 80
(2 - 3)
17
(
21
/
32
) 40 (29)
Trap Valve Seat
100 (4) 19 (
3
/
4
) 55 (40)
Note: - If a torque greater than that recommended is applied, the MC-COS or
(1 N
⋅
m
≈
10 kg
⋅
cm)
components may be damaged.
- If drawings or other special documentation were supplied for the product, any torque given there
takes precedence over values shown here.
Tension Ring
Assembling the Piston Ring
Ring Gaps
Piston Ring
