Graco Series D Air Motor and Throat Service, Before You Start, Disassembly, Relieve the pressure

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Air Motor and Throat Service

Air Motor and Throat Service

Before You Start

DBe sure you have all necessary parts on hand. Air Motor Repair Kit 207385 includes repair parts for the motor. Use all the parts in the kit for the best results. Parts included in the kit are marked with one asterisk, for example (19*), in the text and drawings. See the Parts List on page17.

DTwo accessory tools should be used: Padded Pliers, 207579, are used to grip the trip rod without damaging its surface, and a 0.125-in. (3.18 mm) Gauge, 171818, is used to assure the proper clearance between the poppets and seat of the piston.

9.Remove the eight screws (3) holding the cylinder (30) to the base (28). Carefully pull the cylinder straight up off of the piston assembly (27).

Before You Start CAUTION

To avoid damaging the cylinder wall, lift the cylinder straight up off of the piston. Never tilt the cylinder as it is being removed.

Disassembly

1. Flush the pump.

Disassembly WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 8.

2.Relieve the pressure.

3.Disconnect the hoses, remove the pump from its mounting, and clamp the air motor base (28) in a vise horizontally by closing the vice jaws on the flange.

4.Use a strap wrench on the displacement pump cylinder (110) to screw it out of the air motor base

(28).See Fig. 3.

5.Remove the piston/valve seat (109) from the rod

(29)with wrenches or with the vice and a wrench.

6.Remove the piston ball (103), u-cup packing (107{), and piston washer (113).

7.Remove the air motor base from the vice, and place the piston rod (29) flats in the vice with the air motor up.

8.Loosen the lift ring (24). Pull up the lift ring, grip the trip rod (31) with the padded pliers, and screw the lift ring off of the rod.

31

27

3

28

103

113

flange

109

110 2.Relieve the pressure.

24

30

29

10 308608K 10{

Manual background 108{

107{

Manual backgroundManual background 105{

TI1076

Manual background CAUTION

Do not damage the plated surface of the trip rod (31). Damaging the surface of the trip rod can result in erratic air motor operation. Use the special padded pliers, 207579, to grasp the rod.

10 308608K

Fig. 3

06033

 

 

 

{Included in Pump Repair Kit 238225, which may be purchased separately.

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Contents Model 238108, Series D Instructions - Parts ListImportant Safety instructions 1100 psi 7.6MPa, 76 bar Maximum Working PressureWarning Symbol Table of ContentsSymbols Caution SymbolHAZARDOUS FLUIDS SKIN INJECTION HAZARD308608K MOVING PARTS HAZARD FIRE AND EXPLOSION HAZARD4 308608K G K H P J InstallationC A N D A A R E B DETAIL A L M For Portable ApplicationsWall Mount System AccessoriesCover Mount 6 308608KInstallation Grounding4.Fluid supply container Follow the local code 308608KOperation Pressure Relief ProcedureStartup and Adjustment SKIN INJECTION HAZARDSolution TroubleshootingProblem CauseBefore You Start Air Motor and Throat ServiceDisassembly 2.Relieve the pressureAir Motor and Throat Service MOVING PARTS HAZARD308608K 12 308608K ReassemblyCutaway View Air Motor and Throat Service41 to 54 N.m using a 2-in.socket Air Motor and Throat Service308608K 14 308608K Displacement Pump Service1.Relieve the pressure DisassemblySEAL, u-cup shown on page Displacement Pump Parts Drawing and ListDescription Included in Pump Repair Kit16 308608K Air Motor Parts Drawing06032 Description Air Motor Parts ListYExtra warning labels are available at no cost DescriptionMounting Hole Layout DimensionsTechnical Data MODEL 238108 Pump, Series DInlet Air Consumption Performance ChartsFluid Outlet Pressure Outlet Pressure - psi barGraco Phone Number Graco Standard Warranty20 308608K
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238108, Series D specifications

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