©Copyright Task Force Tips LLC 2021
26
LIX-575 June 24, 2021 Rev00
12.0 MAINTENANCE
The Extend-A-Gun VP requires little maintenance. The Extend-A-Gun VP should be kept clean and free of dirt. All controls should be
checked for freedom of movement and proper operation before each use. Any inoperable or damaged parts should be repaired or
replaced immediately. Consult factory for recommended service procedure.
12.1 LUBRICATION
The Extend-A-Gun VP is permanently lubricated on the cup seal. If lubricant has been removed during service, apply a thin film of White
Lithium Grease on seal surfaces.
12.2 VALVE SEAT REPLACEMENT
The valve seat may be replaced in the field if it becomes a source of leakage due to harsh environmental conditions or excessive age. A
hook type spanner wrench sized to fit a 4.8” diameter may be used to remove and install the valve seat.
Follow the steps below to replace the valve seat:
1. Toggle the switch to the UP position to raise the telescoping waterway.
2. Fully open the valve to ensure pressure has been relieved and to protect the half ball while the valve seat is being removed.
3. Drain the pipe immediately upstream of the valve, then loosen or remove the pipe to allow a minimum of 2” of working clearance
adjacent to the Victaulic inlet adapter. This inlet adapter shown in Figure 3.3 (bottom inlet configuration) and Figure 8.2A (side
inlet configuration) also serves as the valve seat retainer.
4. Near the “A” port marking, on the opposite side of the valve body from the gearbox, loosen the set screw by 4 full turns.
5. Using hook type spanner wrench, remove the inlet adapter.
6. Using pliers, pull old valve seat out of groove in valve body.
7. Close the valve and clean all sealing surfaces of the half ball, valve body and inlet adapter. Also clean all debris from threads of
valve body and inlet adapter using acetone. Verify all sealing surfaces are smooth and intact. If significant damage is visible,
consult Task Force Tips Service Department.
8. Apply light coat of silicone based grease such as Moly-Kote 112 to all sealing surfaces and threads of half ball, valve body, and
inlet adapter. Open valve so half ball is out of the way.
9. Install new valve seat into groove in valve body with wider side facing the half ball. Apply silicone grease to the bore of the valve
seat.
10. Install inlet adapter until it is snug against the valve seat, then adjust it so the nearest wrenching notch in the O.D. is aligned with
the set screw hole.
11. Apply blue Loctite to set screw and torque to 56 in-lb.
12. Reassemble the upstream plumbing and test the valve. If leaks are observed through the valve seat, try tightening the inlet
adapter until it has advanced two additional notches with respect to the set screw hole (60° rotation).
