Battery Replacement, LPU-23/P (Series) and LPU-24/P (Series)

WARNING 239.475 Figure 6-24.—Inserting new O-ring and CO₂cylinder. weight. Discard and replace the cylinder if its scale weight is 2 grams less than its stamped minimum weight. By using the cylinder thread chaser die, figure 6-23, you turn the thread chaser to the full extent of the threads on the CO₂cylinder to cut free any excessive cadmium plating covering the threads. Insert new O-ring and turn the CO₂cylinder into inflator body as far as hand twisting permits. See figure 6-24. Battery Replacement, LPU-23/P (Series) and LPU-24/P (Series) To replace batteries, proceed as follows: Remove the sensor plug cap with a standard box wrench. BATTERIES MAY EXPLODE IF RE- CHARGED OR IF THEY ARE DIS- POSED OF IN A FIRE. Remove the old batteries and discard them. CAUTION NEVER REPLACE ONE BATTERY; ALWAYS REPLACE THE PAIR. Remember to record the date of manufacture and the date of installation of new batteries on the Aviation Crew Systems History Card. NOTE: Batteries have a total life of 2 years from the date of manufacture. Do not install batteries if their total life expires prior to the next scheduled calendar inspection. Install batteries in accordance with figure 6-20. WARNING ENSURE THAT THE SENSOR PLUG CAP IS TORQUED TO THE CORRECT VALUE. On FLU-8A/P only, torque the sensor plug cap to 5 in-lb using 17/32-inch socket and torque wrench. 6-35