Replacing the T-lip Packings

NOTE: For maximum lower T-lip packing life, use a packing guide tool (see fluid section parts list for part number) to insert the lower T-lip packing into the cylinder. If you do not have a packing guide tool, follow steps 1 – 2 of the procedure below.

1.Apply a light coat of household oil to the new lower T-lip packing and insert it edge-first into the lower end of the fluid section.

2. Turn the T-lip packing inside the fluid section cylinder so that the springs of the T-lip packing face into the cylinder. To do this, hold the lower edge of the T-lip

7.Screw the piston seat retainer into the lower end of the piston. Torque the retainer to 12 ft./lbs.

CAUTION

Do not torque the piston seat retainer more than 12 ft./lbs. Over-torquing may damage the ball guide and prevent normal operation of the pump.

8.Apply a light coat of household oil to the piston and insert it, shaft first, into the lower end of the fluid section until it seats. Tap the bottom of the piston gently with a rubber mallet if necessary.

Replacing Worn Parts of the Inlet Valve

1. Remove the O-ring from the inlet valve housing.

packing in place while pressing the upper edge further into the cylinder.

3. Push the lower T-lip packing as far into the fluid section as it will go.

4. Insert the lower spacer into the fluid section.

5.Apply a light coat of household oil to the

new upper T-lip packing and place it into the upper end of the fluid section. Position the T-lip packing so that it is level and the springs of the T-lip packing face into the cylinder.

6.Thread the packing nut into the fluid section to push the upper T-lip packing farther into the cylinder, then remove the packing nut.

7. Insert the upper

Packing Nut

spacer into the fluid

 

2.Cover the top of the inlet valve housing and turn it upside down to remove the inlet ball stop disk, inlet ball guide, inlet ball, inlet ball seat, and inlet ball seal.

3.Insert a new inlet ball seal into the inlet valve housing.

4.Check the inlet ball seat for wear. If both sides are worn, insert a new ball seat into the housing. If only one side of the ball seat is worn, insert it into the housing with the worn side facing down.

O-Ring

Ball Stop Plate

Inlet Ball Guide

Inlet Ball

Inlet Ball Seat

Inlet Ball Seal

Inlet Valve

Housing

 

section.

Upper Spacer

 

 

8.

Push the upper spacer

Upper T-lip Packing

 

as far into the fluid

Fluid Section

 

section as it will go.

 

Cylidner

9.

Screw the packing nut

 

into the fluid section. Torque to 25-30 ft./lbs.

Maintaining the Valves

Replacing the Piston and Worn Parts of the Outlet Valve

1.Turn the piston upside down and use a hex wrench to remove the piston seat retainer from the lower end of the piston.

2.Cover the open end of the piston and turn the piston right- side up again to remove the outlet ball seat and outlet ball.

5.Place a new inlet ball on the inlet ball seat in the housing.

6.Place the inlet ball guide over the inlet ball.

7.Place the inlet ball stop plate over the ball guide.

8.Insert a new O-ring into the inlet valve housing.

9.Place the wrench flats of the inlet valve housing into a vise and screw the fluid section into the inlet valve housing. Torque the inlet valve housing to 85-95 ft./lbs.

Attaching the Fluid Section

1.Turn the locknut on the fluid section until it reaches the bottom of the threads.

2.Thread the fluid section into the pump housing.

3.Rotate the fluid section to align the hole in the piston shaft with the holes in the yoke.

4. Insert the pin through the yoke

and piston.

3.Insert a new outlet ball guide into the new piston. The open end of the ball guide should face the open end of the piston. Use the head of a long nail or screw to seat the ball guide past the threads inside the piston if necessary.

4.Insert a new outlet ball into the outlet ball guide.

5.Check the outlet ball seat for wear. If both sides are worn, insert a new ball seat into the piston on top of the ball. If only one side of the ball seat is worn, insert it into the piston with the worn side facing away from the ball.

Piston

Outlet Ball

Guide

Outlet Ball

Outlet Ball

Seat

Piston Seat

Retainer

5.

Snap the retaining clip around

 

the pin and yoke.

6.

Screw the fluid section into the

 

pump housing as far as it will go,

 

then unscrew it slightly so that

 

the fluid hose fitting will align

 

with the fluid hose.

7.

Firmly tighten the locknut at the

 

top of the fluid section assembly

 

against the pump housing using

 

an adjustable wrench.

8.

Tighten the return line fitting back

 

to its original position.

Yoke

Pin

Retaining Clip

9.

Fill the reservoirs in the packing nut with hydraulic oil.

10.

Replace the pump housing cover and screw in the 6

 

screws that hold it in place.

11.

Tighten the fluid hose onto the fluid hose fitting on the fluid

6.Apply an appropriate thread-locking compound to the threads of the piston seat retainer.

NOTE: Do not put the new piston into a vise. Putting the piston into a vise may damage the piston.

 

section.

12.

Insert the elbow on the suction set assembly into the

 

bottom of the inlet valve housing.

13.

Push the retaining ring up into the groove inside the inlet

 

valve housing to secure the suction set assembly in

 

position.

English

8

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