Graco 3400 manual  Drive housing face

Installation

WARNING

If pin works loose, parts could break off and project through the air and result in serious injury or property damage. Make sure pin is properly installed.

CAUTION

•Replacement pump comes with an outlet fitting installed. Replace installed fitting with fitting marked “GMAX 3400”.

•If the pump jam nut loosens during operation, the threads of the bearing housing and drive train will be damaged. Tighten jam nut as specified.

1.Fig. FIG. 17. Pull piston rod out. Screw in pump until holes in connecting rod and piston rod align.

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FIG. 17

2.FIG. 11. Push pin (8) into hole. Push retaining ring spring into groove all the way around connecting rod.

3.FIG. 18. Screw jam nut down onto pump until nut stops. Screw pump up into drive housing until top threads of pump are flush with drive housing face (FIG. 19). Back off pump and jam nut to align pump outlet to side. Tighten jam nut by hand, then tap 1/8 to 1/4 turn with a 20 oz (maximum) hammer to approximately 75 ±5 ft-lb (102 N·m). Connect hose (93).

Displacement Pump

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FIG. 18

4.FIG. 19. Fill packing nut with Graco TSL until fluid flows onto the top of seal. Install pail hook (9).

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Drive housing face

FIG. 19

310813 Rev C 15