172-65200MA-07 (PCV-1) 8 Oct 2021
10
Part
During Disassembly
During Reassembly
Valve Body
Nut
(Connecting Rod/
Valve Body)
Hold the connecting rod with a
wrench at the two flat surfaces on
the rod and remove the valve
body with a socket wrench by
removing the nut connecting the
valve body
Consult the table of tightening
torques and tighten to the proper
torque
O-rings
Back-up Rings
(Valve Body)
Remove o-rings/back-up rings on
the valve body
Replace with new o-rings; be sure
to coat surfaces with heat
resistant grease
Valve Seat
Remove the valve seat from the
body
Insert the valve seat slowly by
making sure that o-rings are in
appropriate places
O-rings
(Valve Seat: 2 types)
Remove o-rings on the side and
the bottom of the valve seat
Replace with new o-rings; be sure
to coat surfaces with heat
resistant grease
Table of Tightening Torques
Part Name
Size
Distance Across Flats
Torque
(mm)
(in)
(mm)
(in)
(N·m)
(lbf·ft)
Nut
(Bonnet/Cover)
25 - 65
(1
– 2
1
/
2
)
16
(
5
/
8
)
80
(59)
80 - 100
(3
– 4)
19
(
3
/
4
)
180
(130)
Nut
(Body/Bonnet)
25
(1)
19
(
3
/
4
)
100
(81)
40 - 50
(1
1
/
2
– 2)
19
(
3
/
4
)
200
(150)
65
(2
1
/
2
)
24
(
15
/
16
)
200
(150)
80 - 100
(3
– 4)
24
(
15
/
16
)
300
(220)
Nut (Connecting
Rod/Piston)
25 - 65
(1
– 2
1
/
2
)
17
(
21
/
32
)
40
(29)
80 - 100
(3
– 4)
19
(
3
/
4
)
60
(44)
Nut
(Connecting Rod/
Valve Body)
25
(1)
10
(
3
/
8
)
25
(19)
40 - 65
(1
1
/
2
– 2
1
/
2
)
17
(
21
/
32
)
40
(29)
80 - 100
(3
– 4)
19
(
3
/
4
)
60
(44)
Connecting Rod
(at two flat surfaces)
25 - 65
(1
– 2
1
/
2
)
10
(
3
/
8
)
–
–
80 - 100
(3
– 4)
17
(
21
/
32
)
–
–
NOTE: - If a torque greater than that recommended is applied, (1 N
m
10 kg
cm)
the body or components may be damaged.
- Coat all threaded portions with anti-seize.
- If drawings or other special documentation were supplied for the product, any
torque given there takes precedence over values shown here.
Minimum Required Space for Disassembly
Size
H
mm
(in)
mm
(in)
25
(1)
590
(23
1
/
4
)
40
(1
1
/
2
)
600
(23
5
/
8
)
50
(2)
65
(2
1
/
2
)
620
(24
3
/
8
)
80
(3)
840
(33)
100
(4)
H
