Replacing The Nozzle - Graco EM5 Instructions-Parts List Manual

Servicing the Valve
Valve Repair Kit 240453 is available and can be
ordered separately. See the Parts Drawing on
page 18. The parts with asterisks next to their
reference numbers are available in the Valve Repair
Kit.
When repairing the valve with new parts from the
Valve Repair Kit, use all of the new parts. To replace
the parts, do the following:
1. Relieve the pressure.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 5.
2. Remove the six screws (21) that hold the cover (1)
together, and open the cover.
3. Remove the trigger (15) from the valve stem
assembly (16b*).
4. Unscrew the valve seat (16e*), remove the valve
seat and valve stem assembly (16b*) from the
meter housing, and pull the valve stem assembly
out of the valve seat.
5. Discard the old valve stem assembly (16b) and the
spring (16a).
6. Apply lubricant to all new parts. Place the new
spring (16a*) in the new valve stem assembly
(16b*), push the new valve stem assembly back
into the valve seat (16e*), place the valve stem
assembly, seat, and spring into the meter housing,
thread the valve seat into the meter housing, and
torque to 140 to 150 in-lb (16 to 17 N.m).
NOTE: Take care that the spring (16a*) does not
get pinched when you install the valve stem
assembly (16) into the meter housing.
7. Place the trigger (15) on the valve stem assembly
(16b*), put the cover (1) together, thread in the six
screws that hold the cover together, and torque to
7 to 10 in-lb (0.8 to 1.1 N.m).
Service

Replacing the Nozzle

If the nozzle (5b, 6b, or 7b) begins to leak, replace it
as follows:
1. Relieve the pressure.
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 5.
2. Remove the old nozzle from the extension with an
open-end adjustable wrench on the flats of the
nozzle or nozzle bushing.
NOTE: On Models with automatic nozzle
239829 (5b or 6b), remove and tighten the nozzle
with the wrench on the flats of the nozzle bushing.
Do not disassemble the nozzle bushing from
the nozzle. Disassembly will affect the
performance of the nozzle. See below.
3. Thread the new nozzle (5b, 6b, or 7b) onto the
extension, and, with an open-end adjustable
wrench on the flats of the nozzle or nozzle
bushing, tighten it firmly.
Do not use Graco's old nozzle (Part No. 203655) or
any other manual shut-off nozzle on the EM5
extension. You must use the nozzle that is
provided with the EM5, or the meter could be
damaged. Do not use any sealant material.
WARNING
nozzle bushing
CAUTION
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TI0267
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