Repair
70 3A2347ZAA
6. Remove air gauge from panel.
Reassembly (see FIG.48):
1. Slide new air gauge into panel and slide the bracket
onto the back of the gauge. Install air fitting onto the
gauge by hand, do not tighten yet.
2. Install bracket (403c) then install two nuts (403a)
finger tight.
3. Place one small crescent wrench on the brass part
of the gauge then use a second small crescent
wrench to tighten the air fitting (403b).
4. Orient gauge as desired then tighten two
nuts (403a) to secure gauge (403) in place.
5. Slide air control assembly (9) into place then use
two screws (8) secure to electrical enclosure.
Air Motor
Replace Pilot Valve
1. Close the bleed-type ball valve installed at the sys-
tem air inlet to relieve all air pressure in the system.
2. Turn main power switch OFF.
3. Use 10 mm socket to remove air motor pilot
valve (513) from air motor (218).
4. Lubricate with grease and install new air motor pilot
valve (513).
5. Torque pilot valve to 95-105 in-lb (10.7-11.9 N•m).
Replace Air Valve
Disassembly (see FIG.50):
1. Close the bleed-type ball valve installed at the sys-
tem air inlet to relieve all air pressure in the system.
2. Turn main power switch OFF.
3. Loosen clamp on air motor bracket (528) then
remove funnel assembly (61).
4. Loosen upper hose clamp on rubber housing then
remove fill cap.
5. Dispense until the fluid level in the melter is at or
below the honeycomb grid.
NOTICE
In the following step, do not overtighten the two
nuts (403a). Overtightening may cause the gauge to
break.
FIG.49
ti20767a
513
218
FIG.50
ti20768a
508
527
509
218
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