Graco 24E512, Operation And Repair Manual

Page: 28 / 54

Maintenance
28 3A0232E
Replace Material Needle
Assembly
NOTE: The material needle assemblies are the two side
needles (105) in the rear of the gun. See page 34.
1. Follow Pressure Relief Procedure , page 22.
2. Loosen four screws (113) then remove trigger clamp
assembly (111). See page 34.
3. Use 1/2 in. deep well socket to break loose and
remove material needle assemblies.
4. Install new material needle assemblies.
5. Ensure needle flats are aligned with one another.
6. Install trigger clamp assembly on gun then perform
Trigger Clamp Adjustment Procedure on
page 18.
Replace Center Needle
Assembly
1. Follow Pressure Relief Procedure , page 22.
2. Loosen four screws (113) then remove trigger clamp
assembly (111). See page 34.
3. Use 7/32 in. deep well socket to remove
retainer (108) then remove the needle (106),
spring (107), and o-ring (110).
4. Install new o-ring. Verify needle is clean before rein-
stalling. Use a liberal amount of lubrication.
5. Install rear packing retainer with a liberal amount of
lubrication.
Air Motor Oiling
1. Perform Pressure Relief Procedure .
2. Engage trigger lock.
3. Rotate speed control until oil mark line is aligned
with line on back plate of the cutter.
4. Add 3-4 drops of air motor oil, Graco part 202659,
into oil hole on air motor.
NOTICE
Be careful not to overtighten trigger clamp assem-
bly as this will cause the material needles to bind
and cause material needles to operate incorrectly.