308155 15
Service
8. Visually inspect the spring (21). If there is wear or
damage, proceed with this step. Remove the nut
(18), spring (21), and retainers (20) from the trip
rod (12). Reassemble with a retainer (20) on each
end of the new spring (21). You must thread the
nut onto the rod until it runs out of thread, so that it
bottoms out on the shoulder of the rod. See Fig. 8.
Fig. 8
20
21
20
01664
18
12
NOTE: If you are re-using or reassembling any parts,
use a surface cleaner such as chlorinated solvent on
the threads, and blow with compressed air. A 1/4–28
UNF–2A tap can be used to remove adhesive from the
internal threads of the yoke (9).
NOTE: Thread sealant and primer are required. See
Reciprocator Repair Notes on page 14 for
specifications. Loctiter 609 is used only in step below.
9. Apply fresh Loctiter 609 thread sealant to the first
two or three internal threads of the yoke (9). Apply
primer to the external thread of the rod (12). Let
dry for three or four minutes. Assemble, torquing
the screw to 54 to 56 in-lb (6.1 to 6.3 N-m).
Remove excess sealant. Allow 24 hours to cure
before operating the reciprocator.
10. Clean all sealant from the threads of any part you
are reusing, and apply thread sealant to the first
two or three internal threads of the valve assembly
(31). If you removed the capscrew (51), apply
primer to its external threads, let it dry for four
minutes, and torque the capscrew to 42 to 45 in-lb
(4.7 to 5.1 N-m). Remove excess sealant. Allow 24
hours for the thread sealant to cure before you
operate the reciprocator.
11. Remove the o-ring (13*) from the bottom of the
spool valve assembly (31), and replace it with a
new o-ring.
12. Use a spanner wrench to screw the piston (22)
onto the displacement rod (34). Torque to 30 to 40
ft-lb (41 to 54 N.m).
Fig. 9
34
17
12
38
36,37
31
29
32
22
20
21
18
51
*13
6,7
9
17
25
34
20
13*
*24
23*,49*
3,39,2
30
1
See
Fig. 8
1
2
Torque to 30 to 40 ft-lb (41 to 54 N.m)
2
06145
Apply thread adhesive, and torque to 42 to 45
in-lb (4.7 to 5.1 N-m).
26
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