Graco Idler 257817 User manual

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

www.graco.com

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