Graco 3400 Repair Manual

Graco gmax 3400 airless sprayers

Hide thumbs Also See for 3400:

Operation - repair - parts (44 pages)

Operation (30 pages)

Repair manual (26 pages)

Table Of Contents

Table of Contents

Quick Links

Summary of Contents for Graco 3400

Page 1 Read all warnings and instructions ✓ 248663 ✓ 248664 ✓ 248665 ✓ 248666 310802 309639 309250 309640 Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441 Copyright 2005, Graco Inc. is registered to I.S. EN ISO 9001 ✓ ✓ 310813 Rev C...
Page 2: Table Of Contents
Dimensions ....... 25 Graco Standard Warranty ....26...
Page 3: Warning
Warning The following warnings include general safety information for this equipment. Further product specific warnings may be included in the text where applicable. FIRE AND EXPLOSION HAZARD Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent fire and explosion: •...
Page 4 Check equipment daily. Repair or replace worn or damaged parts immediately. • Do not alter or modify equipment. • Use equipment only for its intended purpose. Call your Graco distributor for information. • Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces. •...
Page 5: Maintenance
Pressure Relief Procedure WARNING Read Injection Hazard, page 3; Burn Hazard, page 4 Lock gun trigger safety. Turn engine ON/OFF switch to OFF. Move pump switch to OFF and turn pressure control knob fully counterclockwise. Unlock trigger safety. Hold metal part of gun firmly to side of grounded metal pail, and trigger gun to relieve pressure.
Page 6: Troubleshooting
At 70° F, the resistance must be between 1.2 +0.2Ω; if not, replace pinion housing. Have pressure control checked by authorized Graco dealer Adjust or replace clutch. Page 9. Repair or replace pinion assembly. Page 9. 310813 Rev C...
Page 7 Problem Pump output is low Excessive paint leakage into throat packing nut Fluid is spitting from gun Pump is difficult to prime Clutch squeaks each time clutch engages High engine speed at no load 310813 Rev C Cause Strainer (16) is clogged Piston ball (206) is not seating Piston packings are worn or damaged O-ring (227) in pump is worn or damaged Replace o-ring.
Page 8: Drive Housing And Connecting Rod
Drive Housing and Connecting Rod NOTE: The item numbers referenced are for the Hi-Boy models. The Lo-Boy models may have different item numbers. Use the Hi-Boy item number and part to find the corresponding Lo-Boy part and item number. Removal WARNING Read Injection Hazard, page 3;...
Page 9: Pinion Assembly/Clutch Armature/Clamp
Pinion Assembly/Clutch Armature/Clamp Pinion Assembly/Clutch Armature Removal Pinion Assembly If pinion assembly (50) is not removed from clutch housing (51), do 1. through 3. Otherwise, start at 4. WARNING Read Injection Hazard, page 3; Burn Hazard, page 4 Relieve pressure, page 5. Remove drive housing;...
Page 10: Clamp Removal
Installation Clutch Armature . 7. Lay two stacks of two dimes on smooth bench surface. Lay armature (38) on two stacks of dimes. Press center of hub down to bench surface. Clamp Removal Do Engine Removal. WARNING Gasoline can spill and cause a fire or explosion if engine is tipped on side.
Page 11: Clutch Housing
Removal Remove clamp. Do Clamp Removal, page 10. . 10. Remove four screws (60) and lock washers (59) which hold clutch housing (51) to engine. Remove screw (64) from under mounting plate (D). Pull off clutch housing (51). Installation . 10. Push on clutch housing (51). Install four capscrews (60) and lock washers (59) and secure clutch housing (51) to engine.
Page 12: Pressure Control
Removal WARNING Read Injection Hazard, page 3; Burn Hazard, page 4 Relieve pressure, page 5. . 13. Remove two screws (91) and swing down cover (77). Disconnect ON/OFF switch connector (B) from PC board. Press in on two retaining tabs on each side of ON/OFF switch (71) and remove switch from cover.
Page 13: Control Board
Removal WARNING Read Injection Hazard, page 3; Burn Hazard, page 4 Relieve pressure, page 5. . 13. Remove two screws (91) and swing down cover (77) Remove strain relief bushing (24a). Disconnect engine and ground wires. Disconnect at control board (90): •...
Page 14: Displacement Pump
Removal Flush pump. WARNING Read Injection Hazard, page 3; Burn Hazard, page 4 Relieve pressure, page 5. . 15. Stop pump with piston rod (201) in its lowest position. . 14. Loosen two screws (10) and remove pail hook (9). .
Page 15 75 ±5 ft-lb (102 N·m). Connect hose (93). 310813 Rev C . 18 . 19. Fill packing nut with Graco TSL until fluid flows onto the top of seal. Install pail hook (9). Drive housing face . 19 .
Page 16: Parts
Parts Parts Parts Drawing - GMAX 3400 Hi-Boy Sprayers 310813 Rev C...
Page 17 Parts List - GMAX 3400 Hi-Boy Sprayers Model 248663 Ref. Part No. Description 108879 ENGINE, gasoline, 4.0 HP 110837 SCREW, flange, hex 110838 NUT, lock 246428 PUMP, displacement, st Manual 309250 119789 FITTING, elbow, street, 45°, 1/4 npt 287053 ROD, connecting...
Page 18: Pinion Housing
Parts Drawing and List - Pinion Housing Ref No. 50: Pinion Housing Part No. Description PINION HOUSING 287482 KIT, repair, coil 105489 PIN 50c* 287485 PINION SHAFT 50d* 113094 RETAINING RING, large * Must be ordered separately Parts 310813 Rev C...
Page 19 Parts Notes 310813 Rev C...
Page 20: Gmax 3400 Lo-Boy Sprayers
Parts Parts Drawing - GMAX 3400 Lo-Boy Sprayers 310813 Rev C...
Page 21 Parts List - GMAX 3400 Lo-Boy Sprayers Model 248665 Part No. Description 108879 ENGINE, gasoline, 4.0 HP 110837 SCREW, flange, hex 110838 NUT, LOCK 246428 PUMP, displacement, st Manual 309250 119789 FITTING, elbow, street, 45°, 1/4 npt 287053 ROD, connecting; includes 6a, 8...
Page 22: Pressure Control/Filter Assembly
Pressure Control/Filter Assembly Pressure Control/Filter Assembly GMAX 3400 Sprayers Models 248663 through 248666 310813 Rev C...
Page 23: Pressure Control Wiring Diagram
68, 69, 70, 71, 79, 89, 90, 97 15E925 GASKET, transducer 119548 PLUG, cap 113161 SCREW, flange, hex hd 164672 ADAPTER 104813 PLUG, pipe 117317 SCREW, plastite, pan head 287486 CONTROL, board, 3400 116585 SCREW, mach, pan hd 15E856 LABEL, identification...
Page 24: Complete Sprayers
Complete Sprayers - with RAC X Tip, Gun & Hose Models 248664, 248666 GMAX 3400 Airless Paint Sprayers Includes items 201 to 204 Part No. Description 248663 Hi-Boy Sprayer See parts list on page 17 248665 Lo-Boy Sprayer See parts list on page 21 240794 HOSE, grounded, nylon;...
Page 25: Technical Data
Honda GX120 Engine ANSI Power Rating @ 3600 rpm Maximum working pressure Noise Level Sound power Sound pressure Maximum delivery rating Maximum tip size Inlet paint strainer Outlet paint filter Pump inlet size Fluid outlet size Wetted parts Sprayer (without hose and gun) 248663 Hi-Boy 248665 Lo-Boy 310813 Rev C...
Page 26: Graco Standard Warranty
With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.

This manual is also suitable for:

Gmax 3400 248663 248664 248665 248666

Graco 3400 Repair Manual

Quick Links

Related Manuals for Graco 3400

Summary of Contents for Graco 3400

This manual is also suitable for:

Table of Contents