Graco Therm-O-Flow Plus, Instructions Manual

Page: 59 / 82

59 309085
Service
Separating the Pump from the Air Motor
To separate the pump from the air motor:
NOTE: Refer to Parts information on page 64 while
performing this procedure.
1. Remove the pump assembly by performing the
Pump Removal and Replacement procedure on
page 58.
2. Remove the remaining sheet-metal shrouds from
the pump.
3. Remove the coupling nut (504), which attaches the
pump to the air motor. Be careful not to lose the
collar couplings (505).
4. Remove the nuts (506) from the tie rods (503).
You can now separate the pump from the air
motor.
5. To access the bare pump, remove the pump’s:
insulation
2 heater bands
sensor block
Reattaching the Air Motor to the Pump
Perform the above procedure in reverse order to
reattach the pump to the air motor.
Be sure that:
when you reinsert the collar couplings into the
coupling nut the large flanges point upwards
Separating the Ram Plate and the Pump
To separate the ram plate and the pump assembly:
1. Remove the pump assembly by performing the
Pump Removal and Replacement Procedure
procedure on page 58.
2. Disconnect the sensor wires from the junction box
(Fig 18).
3. Disconnect the ram plate wires from the junction
box (Fig 18).
4. Loosen the coupling nuts from the ram plate
conduits and from the sensor conduit.
5. Remove the air line from the blow-off valve.
6. Pull the pump from the plate assembly. The pump
intake is now free to slide up and out of the ram
plate. Always replace O–ring (P/N 109482) on the
intake. Ref. service form 308570.