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Impulse Maintenance
The following section will review standard maintenance instructions for the Impulse.
Changing the Battery
To change the battery in the Impulse, remove the two grip cover screws on either side of the
grip frame. Remove the old battery and replace with a new 9-volt alkaline battery.
Lubricating the Bolt
To remove the bolt from the Impulse, remove the bolt pin located at the top of the body and
slide the bolt out the back of the body. Wipe clean with a paper towel. Apply a generous
amount of Dow 33 Shocker lubricant to the bolt. While the bolt is removed, the inner surface
of the upper bore should be cleaned by pushing a paper towel through the body.
Lubricating the Hammer Piston
To remove the Hammer Assembly from the Impulse, remove the bolt pin from the top of the
body. Then use an adjustable wrench to loosen the hammer assembly from the back of the
body. After removing the hammer assembly, apply a generous amount of Dow 33 Shocker
lubricant to the stainless piston and holes at the rear of the assembly. Do not apply lubricant
to hammer head.
Cleaning the Valve
Remove the end cap and valve spring. Remove the Hammer Assembly from the back of the
Impulse. Push the valve out through the front of the Impulse. Do not use a tool or object with
sharp edges, as this may damage the inner surface of the body. Wipe the valve with a clean
paper towel, apply Dow 33 lubricant to the o-ring and reassemble.
Cleaning the Solenoid Spool Valve
Remove the two grip frame screws using a 1/8” allen wrench. (See Diagram on page 6-7)
Slowly move the body to the side of the grip frame and disconnect the wire harness that
connects the solenoid to the board. Remove the two end-cap screws from the solenoid and
remove the end cap. Using a pair of needle-nose pliers, pull the spool valve out of the spool
valve housing. Wipe the valve with a clean paper towel and apply Dow 33 lubricant to the o-
rings. Reassemble the solenoid, making sure that the marked side of the end-cap is correctly
reattached to the solenoid.
[Coil] [Poppet] [Pilot]
[Spool Valve Housing]
[Spool Valve] [End Cap]
Solenoid Assembly & Mounting
[Solenoid Gasket]
[Solenoid Mounting Screws]
Marked side
of End Cap
[Impulse Body]