Specifications

16
17
SERVICING INLET VALVE
Refer to Fig. 18 & 30
1. Using the rod collar tool (189-211), screw the suction nut (187-002),
containing intake seat support (187-001), off of the uid body
(187-313). See Fig. 31
2. Remove the inlet seat (187-065), O-ring (106-017), inlet
ball (187-020) and inlet retainer (187-016) with O-ring (106-018).
See Fig. 18
3. Clean all parts and inspect them for wear or damage,
replacing parts as needed. Old O-rings should be replaced
with new ones.
NOTE: Inlet seat (187-065) is reversible.
4. Clean inside of uid body (187-313).
5. Reassemble the valve and screw it onto the uid body if
no further service is needed.
SERVICING OUTLET VALVE
Refer to Fig. 19 & 30
1. Complete all steps of the Fluid Pump Disconnect procedure on page
16.
2. Screw the suction nut (187-002) off the pump and remove inlet valve
assembly.
3. Using the rod collar tool, loosen the packing nut and push the piston
down and out of the uid body.
4. Place piston holder (187-248) in a vise. Slide the piston
into the holder and lock in place with a 1/4" pin (187-250).
5. Clean all parts and inspect them carefully for wear or
damage. Inspect the outside of the piston rod for scoring or
wear. Replace these parts if needed. A worn piston rod will
cause premature wear of packings.
6. Using a 3/8" allen wrench to unscrew the retainer (187-051) from the
piston (187-330).
7. Remove the outlet seat (187-061), O-ring (106-021), outlet ball
(115-022) and outlet retainer (187-062).
8. Inspect the outlet ball and seat for wear. Replace as required.
NOTE: Outlet seat (187-061) is reversible.
9. Install parts back into piston rod as per Fig. 19. Place
two drops of loctite No. 242 (blue) on threads of the
retainer before assembling and torque to 20 ft-lbs.
SERVICING INLET & OUTLET VALVES
FIG. 18
FIG. 19
21
25
24
23
22
27
26
187-248
187-250
1
17
16
20
19
18
Part No. Table for Figures 18
thru 21 is located on page 20.