Graco 3900, 5900, 5900HD

30940910

Pinion Assembly/Rotor/Field/Shaft/Clutch

Removal

If pinion assembly (19) is not removed from clutch

housing (5), do 1. through 4. Otherwise, start at 5.

1. Relieve pressure; page 5.

2. Remove drive housing; page 9.

3. Disconnect field cable (X) from pressure control,

and gallon counter sensor at (A).

8699A

Fig. 4 XBottom View

4. Fig. 5. Remove five screws (10) and lockwashers

(17) and pinion assembly (19).

10 17

Fig. 5 8700A

5. Fig. 6. Place pinion assembly (19) on bench with

rotor side up.

6. Remove four screws (72) and lockwashers (17).

Install two screws in threaded holes (E) in rotor.

Alternately tighten screws until rotor comes off.

8701B

Fig. 6

Contents

Main 309409E Related Manuals INSTRUCTIONS-REPAIR GMax 3900, 5900, 5900HD Airless Paint Sprayers GMax 3900 Table of Contents Warnings and Cautions Warning Symbol Caution Symbol WARNING INJECTION HAZARD TOXIC FLUID HAZARD RECOIL HAZARD WARNING FIRE AND EXPLOSION HAZARD EQUIPMENT MISUSE HAZARD HAZARD OF USING FLUIDS CONTAINING HALOGENATED HYDROCARBONS Maintenance Pressure Relief Procedure Troubleshooting Relieve pressure; page 5. PROBLEM CAUSE SOLUTION 0.2 (GMax 3900); 1.7 309409 7 PROBLEM CAUSE SOLUTION Bearing Housing and Connecting Rod Drive Housing Page Page Pinion Assembly/Rotor/Field/Shaft/Clutch Clamp Clutch Housing Engine On/Off Switch Pressure Control Control Board Pressure Control Transducer Pressure Adjust Potentiometer Pressure Control Repair Digital Display Messages After a fault, follow these steps to restart sprayer: Displacement Pump Removal Repair Installation Parts Drawing GMax 3900, 5900, 5900HD Hi-Boy Sprayers Models 233701, 233706 and 233716 309409 19 Parts List GMax 3900, 5900, 5900HD Hi-Boy Sprayers Y Danger & Warning labels, tags, and cards are free Models 233701, 233706 and 233716* Ref No. Part No. Description Qty Ref No.Part No. Description Qty Parts List & Drawing Pinion Assembly Ref No. 19 and 20 Page Parts Drawing GMax 3900 and GMax 5900 Lo-Boy Sprayers Models 233700 and 233705 309409 23 Parts List GMax 3900 and GMax 5900 Lo-Boy Sprayers Y Danger & Warning labels, tags, and cards are free Models 233700 and 233705 Ref No. Part No. Description Qty Ref No.Part No. Description Qty Parts Drawing Sprayer 309409 25 Parts List Sprayer NO. PART NO. DESCRIPTION QTY VIEW A Models 233700 through 233703; 233705 through 233707; 233716 and 233717 NO. PART NO. DESCRIPTION QTY Parts List/Drawing Sprayers with RAC X Tip, Gun & Hose Models 233702, 233703, 233707, 233708, 233717 Accessories Technical Data Dimensions GMax 3900 Model 233701, 233703 Model 233700, 233702 GMax 5900, 5900HD Model 233706, 233708, 233716 and 233717 Graco Warranty ADDITIONAL WARRANTY COVERAGE