Graco P39LCS Manual De Usuario

Before starting, fill the wet cup (R) 1/3 full with Graco 

Throat Seal Liquid (TSL) or compatible solvent. 

The wet cup is torqued at the factory; however, throat 

packing seals on Severe Duty pumps may relax over 

time. Check wet cup torque frequently after initial 

start-up and periodically after the first week of produc-

tion. Maintaining proper wet cup torque is important to 
extending seal life. 

To torque the wet cup, use the following steps.

1. Follow Pressure Relief Procedure on page 12.

2. Use the packing nut wrench (supplied) to torque the 

wet cup; see the following table for torque values. 

Do this whenever necessary. Do not overtighten the 

wet cup.

The enclosed wet cup has a fill port in the cover.

MaxLife pumps use a special u-cup throat seal that 

is non-adjustable and does not require periodic 

torquing.

Displacement Pump Torque
100cc, 60cc

28-44 ft-lbs (38-59 N•m)

200c, 250cc, 500cc

95-115 ft-lbs (128-155 N•m)

R

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