Replacement Part Installation
3–20 www.zoll.com 9650-000278-01 Rev. B
Vacuum Pump Replacement
Required Tools and Other Items
• Torque driver
• #1 Phillips Bit
• #2 Phillips Bit
• Needle-nosed pliers
Instructions
Step Action
1 Loosen, but do not remove, the four 8-32 x 3 screws on the Exhaust Muffler baffle.
2 Remove the two 10-32 Keps nuts and the four 6-32 x 2 screws that secure the back
cover to the aspirator chassis.
Save these screws and nuts.
Remove the back cover by pulling it from the aspirator.
3 Remove the 4-40 x 1/4 screw on the dovetail mounting bracket.
Save this screw.
4 Flip the aspirator over and remove the front case assembly by lifting it straight up
away from the module.
5 Remove the battery compartment cover by unscrewing the four 6-32 x 5/16 screws.
Save these screws.
6 Remove the battery by unscrewing the four 6-32 x 2 1/4 screws and detaching the
plug from its locking latch.
Save these screws.
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