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.
Assembling the Piston Ring
Tension Ring
Piston Ring
Ring Gaps
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 - 150
(2
1
/
2
– 6)
17
(
21
/
32
) 60 (44)
65 - 80
(2
1
/
2
– 3)
19
(
3
/
4
) 70 (51)
100, 125
(4, 5)
24
(
15
/
16
) 150 (110)
Bolt for Pilot
Cover/Main Body
150 (6)
36
(1
7
/
16
) 300 (220)
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)
100, 125
(4, 5)
17
(
21
/
32
) 40 (29)
Bolt for Main Valve
Seat
150 (6)
22
(
7
/
8
) 70 (51)
15 – 20
(
1
/
2
–
3
/
4
) 41 (1
5
/
8
) 250 (185)
(Main Body) Plug
25 (1)
46
(1
13
/
16
) 350 (260)
32 – 40
(1
1
/
4
– 1
1
/
2
)
17 (
21
/
32
) 60 (44)
50 – 80
(2 - 3)
19
(
3
/
4
) 70 (51)
100, 125
(4, 5)
24
(
15
/
16
) 150 (110)
Bolt for Cover / Main
Body
150 (6)
36
(1
7
/
16
) 300 (220)
Note: - If a torque greater than that recommended is applied, the MC-COSR 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.
172-65185A-08 (MC-COSR Multi-control Valve) 20 Nov 2014