Graco Fire-Ball H Series Instructions-Parts List Manual page 14

Air Motor and Throat Service
WARNING
To reduce the risk of pinching or amputating your
fingers, always keep fingers clear of the toggle
assemblies (L). See Fig. 6.
9. Use a screwdriver to push down on the trip rod
yoke (7) and snap the toggles down. See Fig. 6.
Remove the lockwires (13) from the adjusting nuts
(11) of the transfer valves. Screw the top nuts off.
Screw the stems (22) out of the grommets (10)
and bottom nuts. Take the valve poppets (30) off
the stems and squeeze them firmly to check for
cracks.
10. Grip the toggle rockers (9) with a pliers. Compress
the springs (26) and swing the toggle assembly (L)
up and away from the piston lugs (M), and remove
the parts. Check to see that the valve actuator (33)
is supported by the spring clips (29), but slides
easily into them. See Fig. 6.
11. Remove the trip rod yoke (7), actuator (33), and
trip rod (34). Check the exhaust valve poppets (31)
for cracks.
NOTE: To remove the exhaust valve poppets (31),
stretch them out and cut them with a sharp knife.
12. Remove one of the air motor plates ( 32 or 64).
Pull the piston (39) up out of the base (35). Re-
move the throat packing nut (19), v-packings (25),
male gland (27), backup washer (20), flat packing
(21) and bearing (28). See the Detail in Fig. 5.
34
12
*14
*17
39
61
See Detail below.
Throat Packing Detail
Lips of v-packings face down.
Fig. 5
24
23
16
35
44*
18
42
62
04196
19
21
20
28
25
27
04197