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  9. Graco Idler 257817 User manual

Graco Idler 257817 User manual

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313900A
Repair Kit
Idler Repair Kit 257817
- For servicing FinishPro 290 Sprayers -
Pressure Relief Procedure
Important Safety Instructions
For detailed instructions and warnings,
see sprayer manual.
To reduce the risk of injury from injection, always follow
this procedure when instructed to relieve pressure,
stop spraying, service equipment, or install or clean
spray tip.
1. Set power/function selection switch to OFF and
unplug sprayer.
2. Turn pressure knob to lowest setting.
3. Hold gun to side of grounded metal pail. Trigger the
gun to relieve pressure.
4. Turn prime valve to PRIME.
If you suspect spray tip or hose is completely clogged, or
that pressure has not been fully relieved after following
these steps, VERY SLOWLY loosen tip guard retaining
nut or hose end coupling to relieve pressure gradually,
then loosen completely. Clear tip or hose obstruction.
ti9346a
ti14351a
2313900A
Disassembly
1. Relieve Pressure (see cover) and unplug sprayer.
2. Loosen IEC cord clamp screw and remove IEC plug
from compressor.
3. Remove air hose from compressor and remove out-
let fitting from compressor.
4. Remove four screws. Tip compressor assembly
down and forward to remove from sprayer. Place
compressor on workbench.
5. Remove two screws and IEC cord clamp. Remove
two screws and compressor shroud.
6. Remove three screws and belt cover.
7. Remove top and bottom idler pulley bracket screws
and remove idler assembly.
8. Remove three screws and motor belt guide plate.
9. Remove belt from pulleys.
ti13409a
ti13411a
ti13416a
Belt Cover
ti13414a ti13664a
ti13413a
ti14352a
ti13407a
313900A 3
Reassembly
1. Install new belt and guide plate with three screws.
2. Install idler assembly with two screws and washer
as shown. Do not fully tighten screws.
3. Place torque wrench in square hole and torque to
60 in-lb to properly tension belt. Tighten top and bot-
tom idler screws.
4. Torque top and bottom idler screws to 120 in-lb.
5. Install belt cover with three screws.
6. Install compressor shroud with two screws. Install
IEC cord clamp with two screws.
7. Install compressor outlet fitting.
8. Tip compressor assembly up and back into frame.
Install four screws.
9. Install IEC connector and tighten cord clamp. Install
air hose to outlet fitting. Make sure cord is pushed in
as far as it can go to ensure a good connection and
the screw is tightened securely.
ti13443a
ti14352a
ti13417a
ti13418a ti13419a
ti13413a
ti13414a ti13664a
ti13411a
ti13442a
ti13420a
4313900A
All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
This manual contains English. MM 313900
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441
Copyright 2009, Graco Inc. is registered to ISO 9001
www.graco.com