Maintenance; Double Ball Pivot Synchronizer And Lock Maintenance - Task Force Tips HEMISPHERE Instructions For Installation, Operation And Maintenance

9.0 MAINTENANCE

TFT products are designed and manufactured to be damage resistant and require minimal maintenance. However, as the primary
firefighting tool upon which your life depends, it should be treated accordingly. The unit should be kept clean and free of dirt by rinsing
with water after each use. Any inoperable or damaged parts should be repaired or replaced before placing the unit in service. To help
prevent mechanical damage, do not drop or throw equipment.
In applications where appliances are left continuously connected to the apparatus or other devices or are used where water is
trapped inside the appliance, the appliance must be flushed with fresh water following each use and inspected for damage.
This appliance should be disconnected, cleaned and visually inspected inside and out at least quarterly, or as water quality and use
may require. Moving parts such as handles, valve ball and couplings should be checked for smooth and free operation. Seals shall
be greased as needed with Silicone based grease such as Molykote 112. Any scrapes that expose bare aluminum should be cleaned
and touched up with enamel paint such as Rust-Oleum. Replace any missing or damaged parts before returning to service.
Any equipment taken out of service due to failure should be returned to the factory for repair or replacement. If you have any
questions regarding the testing or maintenance of your valve, please call Task Force Tips at 800-348-2686.

9.0.1 DOUBLE BALL PIVOT SYNCHRONIZER AND LOCK MAINTENANCE

It is important to clean, inspect, and maintain the synchronizing mechanism regularly, and before each use, as needed. The assembly
can be brushed clean with soap and water. The mechanism consists of a cam, cam follower, wear pads, and a lock mechanism.
The wear pads are press fit in place, and will need to
be maintained periodically.
Indications that maintenance is needed include:
• Difficulty rotating the double ball swivel
assembly
• Inability to lock the double balls
• Metal to metal contact between the cam
follower and the cam
To replace the two pads on the cam follower:
1. Remove the (4) 5/16" button head screws (with a 3/16" hex wrench) that hold the cam follower and cam in place.
2. Remove the cam follower and cam.
3. Secure the cam follower in a soft jaw (or equivalent) vise, and tap with a punch and hammer on the backside of the pads until
they are removed.
4. Replace the pad by tapping a new pad into the bore with a punch and hammer.
To replace the pad located behind the cam in the pocket on the side of the pivot ball:
1. Drill the center of the worn pad with a 1/8" drill, to form a pilot hole, then drill with a 3/8" drill bit. Both drills must be fitted with a
travel stop to prevent the drill from going more than 7/16" into the pad.
2. The remaining pad material can be pried out with a screwdriver or a small pry bar.
3. Replace the pad by tapping a new pad into the bore with a punch and hammer.
Apply Loctite #242 (blue) to all screws before reassembly.
The brake pad and pivot collar should be inspected periodically to ensure that the lock provides sufficient engagement to prevent
unwanted nozzle sweep.
To replace the brake pad:
1. Remove the cam follower
2. Remove the pivot collar from the clamp lever
3. Remove the set screw in the side of the cam. Unscrew the lock knob from the cam.
4. Pry the brake pad off of the boss it is press fit onto.
5. Replace the pad by tapping a new pad into the boss with a hammer.
©Copyright Task Force Tips LLC 2013-2020
Wear Pad
Behind Cam
Brake Pad
Lock Knob
Lock Knob
Set Screw
Cam Washer
26
Clamp Lever
Pivot Collar
Wear Pads On Cam Follower
Cam Follower
Button Head Screw (x4)
Lock/Unlock Label
Lock Knob Screw
LIX-740 July 21, 2020 Rev08