Graco InvisiPac HM10 Instructions Manual page 97

Install the Piston Rod, Throat Seal, and
Throat Bearing
Use seal installation tool to protect the seals from the
threads. See Seal Installation Tool 15B661, page 120.
Seal Installation Tool 15B661
613
F . 86:
IG
1. Push the piston rod assembly (616) into the top of
the pump.
2. Place the Seal Installation Tool 15B661, page 120
into the melter.
3. Grease throat seal (613) and slide over the piston
rod with the lips facing down.
4. Place a 7/8 in. deep-well socket (3/8 in. drive) over
the piston rod and use a rubber mallet to gently tap
throat seal (613) into place.
5. Slide throat bearing (614) over piston rod. Use a
socket and mallet to press the throat bearing into
place.
6. Remove the seal installation tool.
7. Install retaining nut (615).
8. Install the air motor onto the pump. See Replace
the Air Motor on page 92.
3A7259C
Replace the Fluid Pressure Relief Valve
7/8 in. deep-well
socket
F
IG
Remove the Fluid Pressure Relief Valve
1. Prepare for Melter Pump Repairs. Follow the
2. Remove Equipment Covers. Follow the steps on
3. Remove the nuts from the melter bracket plate
4. Disconnect the air tube from the pressure relief
5. Remove the melter jacket fasteners (633) closest to
6. Roll the melter jacket (632) back past the relief
7. Place a rag or cloth between the melter and melter
8. Use a wrench to remove the pressure relief valve
633
215
. 87: Pressure Relief Valve Location
steps on page 88.
page 82.
(215) and rotate the melter to access the pressure
relief valve (630).
valve (630).
the relief valve.
valve (630). This will prevent fluid from soaking it
during repair.
bracket plate beneath the relief valve to catch any
fluid.
(630) from the melter.
Repair
Torque to 24-30 ft-lb
1
632
Air Tube
635
630
1
97