M17 Periscope (cont)

TM-9-2350-256-10 Carrier Cargo Tracked 6-Ton M548A1 (2350-01-096-9356) Manual
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TM 9-2350-256-10 Location Crewmember Not Fully Item Item to Mission No. Interval Check/ Procedure Capable if: Service b. Be alert to any moisture entering through M17 periscope mounting (defective seal on periscope). 53 Weekly M24/ WARNING M24A1 IR IR powerpack is high Periscope voltage item. Injury to Night personnel or damage Check to M24 periscope could occur if MASTER BATTERY and IR POWER switches are in ON position when vehicle power cable is being connected to or disconnected from periscope. CAUTION Perform M24 IR periscope check during darkness only. Do not expose IR periscope to direct sunlight. NOTE Perform WEEKLY and BEFORE NIGHT operations. Lower center periscope. Pull down on periscope lid handle. Push up on latch to unlock lid. Push lid open. 2-87

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