16
17
SERVICING THE INLET & OUTLET VALVES
FIG. 20
FIG. 21
SUCTION VALVE
1. Gently tap the inlet valve nut counter clockwise and
remove.
2. Remove the inlet seat, O-rings, ball and ball guide with.
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: SUCTION SEAT (187-086) IS REVERSIBLE
.
PISTON OUTLET VALVE
1. Place piston holder in a vise. Slide the piston into the
holder & lock in place with the 1/4” dowel.
2. Use a rod to unscrew the piston extension support from
the piston.
3. Remove the outlet seat, O-ring, outlet ball and ball guide.
4. Inspect the outlet ball and seat for wear. Replace as
required.
*NOTE: OUTLET SEAT (187-061) IS REVERSIBLE.
5. While piston is still locked in the holder, install parts back
into the piston in the following order: ball guide, ball, O-
ring, outlet seat. Before reinstalling the piston extension.
Apply two drops of Loctite No. 242 (blue) on the threads
and torque to 20 ft-lbs.
PARTS LIST FIGURE 20 & 21
Item No.
Part No.
Description
1
187-092
Inlet Steel Ball
2
106-013
O-Ring
3
187-086
Inlet Seat
4
187-087
1” Ball Retainer
5
187-084
Inlet Valve Nut
6
106-008
O-Ring
7
187-330
Piston Rod
8
187-062
Ball Guide
9
115-022
Outlet Ball
10
106-021
O-Ring
11
187-061
Outlet Seat
12
187-314
Piston Extension
8
9
12
10
11
7
1
2
3
4
5
6
