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Detailed instructions for use are in the User's Guide.
[. . . ] Remove the flexible air lines and air fittings (Figure 1, item 20). Loosen the four SHCS (item 13) securing the sprue bushing insert (item 32) and remove them from the extruder pad (item 31). Loosen the four SHCS (item 14) securing the extruder pad (item 31) and remove them from the sprue body (item 27). Loosen the two SHCS (item 9) securing the stem to the stem retainer (item 29). [. . . ] Install the Grafoil air seals (Figure 7, item 1) into the air plate (item 2) and M/C reducer (item 3).
3 1 2
Figure 7 Air Plate
1. Install the sprue body retaining tabs (Figure 8, item 1) into the sprue body. Finger tighten into place.
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NOTE: Older revisions may not have tabs.
2 1
Figure 8 Sprue Body
1. Older Revisions without Tabs
Service Procedure 521-0
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7. Place the sprue body (Figure 9, item 1) onto the air plate (item 2). Make sure that the Thermocouple (T/ C) hole (item 3) on the sprue body lines up with the air plate T/C groove (item 4, for the T/C wire leads). NOTE: The Piston Rods may need to be moved into alignment with the holes in the insulator to get the insulator to seat against the sprue body.
Figure 9 Sprue Body and Air Plate
1. Install the dowel bushings (Figure 10, item 1) into the sprue body.
1
Figure 10 Sprue Body
1. Install the crush rings (Figure 11, item 1) into the sprue body.
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Figure 11 Sprue Body
1. Crush Rings
Service Procedure 521-0
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10. Assemble the stem slider (Figure 12, item 1) and connecting rods (item 2).
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NOTE: The stem slider is assembled flat side down.
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Figure 12 Stem Slider and Connecting Rods
1. Tilt the sprue body 45 ° in vise as shown (Figure 13).
Figure 13 Tilting the Sprue Body
Service Procedure 521-0
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2
12. Install the valve stem (Figure 14, item 2) into the nozzle housing (item 1) reverse taper side first, until the reverse taper bottoms out on the sprue body and the stem head (item 3) protrudes out of the pocket (item 4).
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Figure 14 Valve Stem and Sprue Body
1. Assemble the stem retainer (Figure 15, item 1) onto the stem head (item 2) and seat it onto the stem slider.
Figure 15 Stem Retainer and Stem Head
1. Stem Head
Service Procedure 521-0
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14. Apply anti-seize compound to the stem retainer screws (Figure 16, item 2) and torque to 7lb-ft (9. 49 Nm). Install a lock washer or star washer (item 1). Make sure the valve stem assembly moves freely.
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Figure 16 Stem Retainer Screws and Valve Stem Assembly
1. Install the extruder pad (Figure 17, item 1) onto the sprue body (item 2). Make sure the assembly bolt holes line up correctly.
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Figure 17 Extruder Pad and Sprue Body
1. Sprue Body
Service Procedure 521-0
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16. Apply anti-seize compound to the extruder pad (Figure 18, item 1) and sprue body SHCS. [. . . ] Weep Fitting Hole
Service Procedure 521-0
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34. Install the heater retainer/weep fitting (Figure 32, item 1) using an M6 Allen key.
1
Figure 32 Retainer Weep Fitting
1. Heater Retainer/Weep Fitting
1
35. Install the sprue bushing insert into the sprue body. [. . . ]
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