Hitachi GH 300 General Repair Information, Grounding, SAE O-Ring Installation

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General Repair Information

General Repair Information

To reduce risk of serious injury, do not touch moving parts with fingers or tools while testing repair. Shut off sprayer when repairing. Install all covers, gaskets, screws and washers before operating sprayer

1.Keep all screws, nuts, washers, gaskets, and electrical fittings removed during repair procedures. These parts are not normally provided with replacement assemblies.

2.Test repair after problem is corrected.

3.If sprayer does not operate properly, review repair procedure to verify procedure was done correctly. If necessary, see Troubleshooting Guide, page 7, for other possible solutions.

4.Install belt guard before operation of sprayer and replace if damaged. Belt guard reduces risk of pinching and loss of fingers; see preceding WARNING.

Grounding

Ground sprayer with grounding clamp to earth ground for safe sprayer operation when using solvent-based materials. Fig. 1.

SAE O-Ring Installation

1. Unscrew lock nut to touch fitting.

2. Lubricate o-ring (A).

A

ti5414a

3. Screw in fitting hand tight.

ti5415a

4. Unscrew fitting until oriented properly.

ti5416a

5.Tighten lock nut to indicated torque. (Make sure washer is seated properly without pinching o-ring).

ti5417a

6250

FIG. 1

6

311797F

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Contents GH 130, GH GH 230, GH Hydraulic Sprayers Models Electric Motor Kit OptionsPressurized Equipment Hazard Fire and Explosion HazardSkin Injection Hazard Electric Shock HazardPressurized Aluminum Parts Hazard Moving Parts HazardEquipment Misuse Hazard Suction HazardComponent Identification Item No ComponentSAE O-Ring Installation General Repair InformationGrounding After the First 20 Hours of Operation MaintenancePressure Relief Procedure After Each 100 Hours of Operation SEMI-ANNUALLYTroubleshooting Problem Cause Solution311797F Installation Hydraulic PumpRemoval 227 Fan Belt Engine RemovalInstallation Hydraulic Motor RebuildFlying Parts Hazard 263 Hydraulic Oil/Filter Change Displacement Pump FiguresDisplacement Pump ProConnect 190 FIGSupport pump with your hand before opening t-handle Install pin 311797F Parts All SprayersParts List All Sprayers Parts Drawing Engines SPACER, GH300 WASHER, GH300PULLEY, GH300 SHIELD, GH300Parts Drawing All Sprayers Ring PlugBELT, GH300 LABEL, GH130Parts Drawing All Sprayers GH200/230/300 Coupler FITTING, QDStrainer 267 Parts List MANIFOLD, GH130MANIFOLD, GH200 GH 130 & 200 Sprayers with Spray Gun and Hoses GH 230 & 300 Sprayers with Spray Gun and HosesTechnical Data DimensionsSound Levels Graco Standard Warranty For Graco Canada Customers
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