172-65254M-03 (A-COS-10) 27 Oct 2008
17
Reassembly
Assemble the unit using the same procedure as used for disassebling 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, the spring
retainer, ball and adjustment screw. Apply a small amount of anti-seize to the
threads of the valve seat, pilot valve seat and 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 guide 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 width across flats for the to tools be
used are as follows:
Part
COSPECT
Connection Size
(mm)
Width Across
Flats (mm)
Tightening Torque
(N
⋅
m)
Bolts (Spring Housing)
All
17
40
Pilot Valve Seat
All
19
70
Screen Holder
All
24
40
15 – 40
17
60
Bolts
(Pilot Body)
50 19 70
15 – 40
17
60
Bolts
(Trap Cover /Trap Body)
50 19 70
15, 20
36
100
25 41
125
32, 40
60
250
Valve Seat
50 70
300
15, 20
8
7
25 – 40
10
10
Bolts
(Float Cover)
50 13 20
15, 20
11
10
25 – 40
13
15
Trap Valve Seat
50 17 40
1 N
⋅
m
≈
10 kg
⋅
cm
Caution: If a torque greater than that recommended is applied, the
COSPECT
or
components may be damaged.
Tension Ring
Assembling the Piston Ring
Ring Gaps
Piston Ring
