Graco Dyna-Star 224912 Instructions Manual page 14

36,37
30
31
*13
6,7
9
22
1
*24
23*,49*
20
21
32
See
Fig. 8
1 Torque to 30 to 40 ft-lb (41 to 54 N-m)
2
Torque to 42 to 45 in-lb (4.7 to 5.1 N-m)
Fig. 9
14 308156
Reciprocator Repair
3,39,2
29
26
51
2
12
25
17
38
34
13*
20
18
17
06153
8. Visually inspect the spring (21). If there is wear or
damage, 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.
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 13 for
specifications. Loctiter 609 is used only in step 9
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 Loctiter 242 or Perma-Locr
115 thread sealant to the first two or three internal
threads of the valve assembly (31). If you
removed the capscrew (51), apply thread sealant
to the first two or three internal threads of the valve
stop (26). Apply primer to the external threads of
the valve sleeve (29). Let dry for three or four
minutes, assemble, and remove excess sealant.
Allow 24 hours to cure before operating the
reciprocator.
11. Remove the o-ring (13*) from the bottom of the
spool valve (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).
CAUTION
When inserting the piston into the cylinder, care-
fully guide the piston seal (23*) and bearing (24*)
to prevent damaging these parts.
13. Lay Assembly A and Assembly B on the
workbench.
14. Slide Assembly B into the center of the tool (D),
Part No. 189305. Align the upper detent holes (C)
of the yoke (9) with the center line of the tool (D).
See Fig. 10.