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14, 33, 27
6, 7
52
31
13
5, 20
43
35
37
18, 38
55
36
47
55
Torque to 30 to 40 ft-lb (41 to 54 N-m)
Apply thread adhesive, and torque to 42 to 45
in-lb (4.7 to 5.1 N-m).
Fig. 8
Reciprocator Repair
32
31a
40
49
11
54
39
13
See Fig. 7
19
45
NOTES:
If any of these parts are being reused, use a
surface cleaner such as chlorinated solvent on the
threads and blow with compressed air. A #10–24
UNC–2B tap can be used to remove adhesive from
the internal threads of the yoke (43).
Thread sealant and primer are required for Steps 9
and 10. See the third bulleted note on page 14 for
specifications.
9. Apply three drops of fresh thread sealant to the
first two or three internal threads of the yoke (43).
Apply primer to the external thread of the rod (40).
Let dry for three or four minutes. Assemble, and
torque the rod to 54 to 56 in-lb (6.1 to 6.3 N.m).
Remove excess sealant. Allow 24 hours for the
primer to to cure before you operate the
reciprocator.
10. Normally the valve sleeve (32) and valve stop (44)
do not have to be replaced. However, if either part
must be replaced, first soak the parts in hot water
to loosen the sealant. Clean all sealant from the
threads of any part you are reusing and apply
three drops of thread sealant to the first two or
three internal threads of the valve stop (44). Apply
primer to the external thread of the valve sleeve
(32). Let dry for three or four minutes. Assemble.
Remove excess sealant. Allow 24 hours to cure
before operating the reciprocator.
11. Use a spanner wrench to screw the piston (35)
onto the displacement rod (54). Torque to 30 to 40
ft-lb (41 to 54 N-m).
12. Install the o-ring (18*) in the deep lower groove of
the piston (35) and install the seal (38*) over the
o-ring. Install the piston bearing (37*) around the
upper groove of the piston. Holding the piston
bearing in place to avoid damage, slide the
cylinder over the piston and press it down.
CAUTION
When inserting the piston into the cylinder, care-
fully guide the piston seal (38*) and bearing (37*)
to prevent damaging these parts.
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