Replace Needle Packing - Graco RS Operation And Repair Manual

Replace Needle Packing

NOTE: The needle packing is the seal (904) inside the
needle assembly (105). See pages 38 and 52.
Needles bend easily. To prevent bending and damag-
ing the needles, be careful when using wrenches to
remove the needle packings.
1. Follow Pressure Relief Procedure, page 20.
2. Use 9/64 in. hex key to loosen the four screws (114)
on trigger clamp (111). Remove clamp. See
page 38.
3. Use 7/16 in. wrench to break loose then remove the
packing nuts (906). See page 52.
4. Remove needle (908).
5. Remove old packing from needle.
6. Liberally lubricate the new packing with grease
(Part No. 118665).
7. Install new packing onto needle. Install packing with
beveled edge facing rear of needle.
8. Install needle.
9. Install packing nuts and torque to 30 in-lb (3.4 N•m).
10. Ensure needle flats are aligned with one another.
11. Slide trigger clamp onto gun then, with the trigger
clamp loose, perform Adjust Trigger Clamp proce-
dure on page 29.
Be careful not to overtighten trigger clamp assembly
as this will cause the material needles to bind and
cause material needles to operate incorrectly.
3A0232ZAA
NOTICE
NOTICE
Repair
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