Graco GMax
3900 User Manual

308868
Rev. A
First choice when
quality counts. t
Model 232621
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All models are not available in all countries
U.S. PATENT NO. 4,323,741; 4,397,610 PATENTED
1983, CANADA AND OTHER PATENTS PENDING
8695A
INSTRUCTIONS-REPAIR
INSTRUCTIONS
KEEP FOR REFERENCE.
Read this and all related manuals for
important warnings and instructions.
GMaxr 3900 and 5900
Airless Paint Sprayers
3300 psi (227 bar, 22.7 MPa ) Maximum Working Pressure
GMax 3900
Model Series Description
232610 A Hi-Boy
232611 A Hi-Boy with RAC IV tip, gun and hose
232612 A Lo-Boy
232613 A Lo-Boy with RAC IV tip, gun and hose
GMax 5900
Model Series Description
232620 A Hi-Boy
232621 A Hi-Boy with RAC IV tip, gun and hose
232622 A Lo-Boy
232623 A Lo-Boy with RAC IV tip, gun and hose
Table of Contents
Warnings and Cautions 2. . . . . . . . . . . . . . . . . . . . . . . . .
Component Identification and Function 3. . . . . . . . . . . .
Maintenance 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repair
Bearing Housing & Connecting Rod 7. . . . . . . . . . . . .
Drive Housing 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pinion Assembly/Rotor/Field/Shaft/Clutch 9. . . . . . . .
Clamp 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch Housing 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Control 12. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement Pump 14. . . . . . . . . . . . . . . . . . . . . . . . .
Parts
GMax 3900 & GMax 5900 Hi-Boy Sprayers 15. . . . .
Pinion Assembly 17. . . . . . . . . . . . . . . . . . . . . . . . . . . .
GMax 3900 & GMax 5900 Lo-Boy Sprayers 18. . . . .
Complete Sprayers 20. . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Control 21. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Technical Data 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Phone Number 23. . . . . . . . . . . . . . . . . . . . . . . . . .
Graco Warranty 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441
ECOPYRIGHT 1999, GRACO INC.
Graco Inc. is registered to I.S. EN ISO 9001

Graco GMax
3900 Specifications

General

Brand	Graco
Model	GMax 3900
Category	Paint Sprayer
Language	English