Instruction/ maintenance manual of the product GMax 7900 Graco Inc.
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308870 Rev . F First choice when quality counts. t Related Manuals Operation 308867 . . . . . . . . . . . . . . . . . . . . . . . . . . Displacement Pump 308798 . . . . . . . . . . . . . . . . . Spray Gun 309091 . . . . . . . . . . . . . . . . . . . .
308870 2 W arnings and Cautions W arning Symbol W ARNING This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions. Caution Symbol CAUTION This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the instructions.
308870 3 Component Identification and Function Fig. 1 S U W T X V P A B C E F G H J K 202 Main hose 203 Whip end hose 204 Contractor gun with RAC 5 DripLess tip guard and 517 size SwitchTip 203 204 20.
308870 4 Maintenance W ARNING INJECTION HAZARD The system pressure must be manually relieved to prevent the system from starting or spraying accidentally .
308870 5 T roubleshooting W ARNING INJECTION HAZARD T o reduce risk of serious injury , including fluid injection or splashing in eyes or on skin, or injury from moving parts, always follow Pressure Relief Procedure W arning , page 4, before checking, adjust- ing, cleaning or shutting down sprayer .
308870 6 PROBLEM CAUSE SOLUTION Pump output is low Strainer (31) is clogged Clean strainer Piston ball (25) is not seating Service piston ball. Manual 308798. Piston packings are worn or damaged Replace packings. Manual 308798. O-ring (227) in displacement pump is worn or damaged Replace o-ring.
308870 7 Rollers Removal 1. Relieve pressure ; page 4. 2. Fig. 2. Remove six cap screws (10) lock washers (9) and cover assembly (24). Note: A screw driver may be needed to pry off cover assembly . 3. Remove dowel pins (97) and rollers (98) Installation 1.
308870 8 Cam Follower Bearings Removal 1. Relieve pressure ; page 4. 2. Fig. 16. Cycle pump piston rod (222) to lowest position. T urn engine off. 3. Fig. 4. Remove six cap screws (10), lock washers (9) and cover assembly (24). Note: A screw driver may be needed to pry off cover assembly .
308870 9 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 4. 2. Disconnect field cable (X) from pressure control and engine lead.
308870 10 Pinion Assembly/Rotor/Field/Shaft/Clutch Installation 1. Fig. 10. Lay two stacks of two dimes on smooth bench surface. 2. Lay armature (4a) on two stacks of dimes. 3. Press center of clutch down on bench surface. Fig. 10 4a 8705A 0.12 ± .01 in.
308870 11 Clutch Housing Removal 1. Fig. 12. Remove four capscrews (75) and lock- washers (77) which hold clutch housing (5) to engine. 2. Remove screw (15) from under mounting plate (D). 3. Remove engine key (7). 4. Pull of f clutch housing (5). Installation 1.
308870 12 On/Off Switch Removal 1. Relieve pressure ; page 4. 2. Fig. 15. Remove five screws (307) and cover (322). 3. Disconnect two wires (A) from ON/OFF switch (309). 4. Press in on two retaining tabs on each side of ON/OFF switch (309) and remove switch.
308870 13 Pressure Control Control Board Removal 1. Relieve pressure ; page 4. 2. Fig. 15. Remove five screws (307) and cover (322). 3. Fig. 22. Disconnect at control board (302): D Four clutch leads: two violet and two black. D Lead (D) from potentiometer .
308870 14 Pressure Control Control Board Diagnostics 1. Fig. 15. Remove five screws (307) and cover (322). 2. Start sprayer . 3. T urn ON/OFF switch ON.
308870 15 Displacement Pump Removal 1. Flush pump. 2. Fig. 16. Cycle pump with piston rod (222) in lowest position. 3. Relieve pressure ; page 4. 4. Fig. 16. Remove suction tube (30) and hose (33). 9024B Fig. 16 222 33 30 9024C 5. Fig. 17. Use screwdriver to push out pump pin (101).
308870 16 Displacement Pump Pump Pin Clip Removal 1. Remove pump (28). 2. Remove two bolts (86), washers (25), pump brack- et (85), pail hook (94) and shield (95). 3. Fig. 17. Remove clip (230). Installation 1. Fig. 17. Install clip (230). 2. Install shield (95), pail hook (94) and pump bracket (85) with two washers (25) and bolts (86).
308870 17 Parts List & Drawing – Pinion Assembly Ref No. 19 and 20 Ref No. 19: Pinion Housing Assembly 241 1 16 Ref No. 20: Drive Housing Assembly 241537 Ref No.
308870 18 Parts Drawing – Hi-Boy Sprayers 9018D 9027A Ref 1 1 40 45 37 38 39 Ref 35 DET AIL A 52 Model 232630 See manual 308798 for the parts. 1 2 3 Label See page 17 for the parts. 1 5 18 19 10 98 24 97 9 20 2 2 4a 94 101 28 21 25 80 43 41 42 4 See page 22 for the parts.
308870 19 Parts List – Hi-Boy Sprayers Models 232630* Ref No. Part No. Description Qty Ref No. Part No. Description Qty 1 1 14530 ENGINE 1 2 1 13084 RIVET , blind 2 3 192014 PLA TE, indicator 1 4 241 1 13 CLUTCH ASSEMBL Y ,1 includes 4a, 4b, 16, 17, 72, 80 4a .
308870 20 9027A 30f Ref 1 1 40 45 37 39 51 Ref 35 DET AIL A Model 232632 See manual 308798 for the parts. 1 2 3 Label See page 17 for the parts. 1 5 19 9 98 101 97 99 20 2 2 3 4a 94 25 28 24 80 9 10 43 41 42 33 4 See page 22 for the parts.
308870 21 Parts List – Lo-Boy Sprayers Model 232632 Ref No. Part No. Description Qty Ref No. Part No. Description Qty 1 1 14530 ENGINE 1 2 1 13084 RIVET , blind 2 3 192014 PLA TE, indicator 1 4 241 1 13 CLUTCH ASSEMBL Y ,1 includes 4a, 4b, 16, 17, 72, 80 4a .
308870 22 Parts Drawing – Sprayer Models 232630 through 232633 318k 318j 318l 307 322 305 310 31 1 306 315 318z 318aa 303 302 309 308 312 310 313 314 304 305 301 307 304 318c 318a 318b 318d 318e 318.
308870 23 Parts List – Sprayer Models 232630 through 232633 REF NO. P ART NO. DESCRIPTION QTY REF NO. P ART NO. DESCRIPTION QTY 30 1 193653 PLA TE, control 1 302 241093 BOARD, PC 1 30 3 1 1 1839 SCREW , mch pan, 6 – 32 x 1/2 in. 5 304 240776 HARNESS, wiring.
308870 24 Parts List & Drawing – Complete Sprayers Models 232631, 232633 Includes items 201 to 204 Ref No. Part No. Description Qty 201 232631 Hi-Boy Sprayer 1 See parts list on page 18 232633 Lo-Boy Sprayer 1 See parts list on page 21 202 240797 HOSE, grounded, nylon; 3/8 in.
308870 25 T echnical Data Honda GX160 Engine Power Rating @ 3700 rpm ANSI 5.5 Horsepower . . . . . . . . . . . . . . . . . . . . . . . DIN 6270B/DIN 6271 NA 2.9 Kw – 4.0 Ps . . . . . . . . . . . . . . . . . . . . . . NB 3.6 Kw – 4.9 Ps . . . . . .
308870 26 Graco W arranty Graco warrants all equipment manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale by a n authorized Graco distributor to the original purchaser for use.
An important point after buying a device Graco Inc. GMax 7900 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Graco Inc. GMax 7900 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Graco Inc. GMax 7900 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Graco Inc. GMax 7900 you will learn all the available features of the product, as well as information on its operation. The information that you get Graco Inc. GMax 7900 will certainly help you make a decision on the purchase.
If you already are a holder of Graco Inc. GMax 7900, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Graco Inc. GMax 7900.
However, one of the most important roles played by the user manual is to help in solving problems with Graco Inc. GMax 7900. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Graco Inc. GMax 7900 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
