Disassemble, Assemble, & Torque Tusa® S40 - S50 Second stages. The Tusa® Wrench Set provides a variety of specialized functions for the repair of the Tusa S-40, S-50, and R-300 regulators.

The wrenches feature a 19mm and 22.5mm open end design for removing, installing, and torquing second stage components that can not be accessed with a standard wrench. The wrenches can be used either individually or together to service these parts. One of the wrenches has a center broached square hole that allows either size wrench to used as a torque extension (crowsfoot). The other wrench features a pin spanner in the center of the wrench for removing/installing the adjusting screw assembly on the R-300 first stage. The Tusa Wrench Set is machined from high strength aluminum alloy, and the pin spanner utilizes removable SS tension pins. Shipped with complete instructions including the method of calculating torque when using a torque extension.

This socket will fit the Tusa R-400 first stage and the “new” Scubapro Mk 16 first stages. The “new” designator refers to Mk16s that have a 10 hole diaphragm retainer cap (see illustration for more details)

The socket is machined from aluminum alloy and has two 6mm SS cap screws located 180 degrees apart. With the screws retracted, the socket will fit over the cap. Once installed on the first stage, the screws are hand threaded in the two adjacent holes and serve as drive pins to remove, install, and torque the diaphragm retaining cap. The center hole is broached 3/8” square and will fit any 3/8” drive torque wrench. No extension is required for driving this socket.

This Tusa® Cover Tool is a multifunction tool for removing, installing, and torquing both the outer covers and diaphragm retaining rings on the Tusa® S-40 and S-50 second stages.

The “three pin” side of the tool will index with the outer covers, and the “two pin” side of the tool fits the holes in the recessed diaphragm retaining ring.

The cross tee handle of the tool is broached 1/4” hex. This feature allows the tool to be used in conjunction with a torque wrench to achieve the proper assembly tension. A 1/4” hex key socket is required between the torque wrench and the broached center hole (not included).

The body of the tool is machined from nylon tube and the cross tee handle is aluminum. Shipped with instructions.

The Spider 2 tool is designed to do four special jobs required in the disassembly, assembly, and adjustment of the Tusa® Duo-Air and the Scubapro® Air 2.

Figure #1: The tool gets its name from the special machined socket that fits the external webs of the plastic spider. The spider is threaded into the main housing in a recessed cavity on the underside of the main housing. The socket indexes over the small external portion of the webs and allows the spider to be removed/installed without removing the exhaust valve or damaging the spider itself.

Figure #2: The top of the Spider #2 is machined into a pre-assembly post that holds the poppet and spring in the depressed position while the bushing, lever, washer, and nut are installed. It is nearly impossible to hold the poppet and spring in this position without this tool because of its recessed location.

Figure #3: The long straight end of the allen wrench cross handle is used to adjust the position of the downstream orifice after the unit is completely assembled in the housing. The "L" shaped end of the allen wrench can be used to dislodge the cover pin so that the cover can be unthreaded from the main housing. The allen wrench is retained in the body by a stainless steel set screw.

The Spider 2 tool is machined from solid brass and the zinc plated allen wrench is retained in the body by a stainless steel set screw. Body is a natural brass finish.