Pressure charging, 32, 33 charging apparatus, 32, 33, 46, 48_b_ lack of, 56_b_, 61 leaks, 56_b_, 61_c_ pounds of, 9_f_, 32, 56_b_ release of, 66_b_ testing for, 53_d_, 56_b_ Pressure regulator adjustment, 56_b_, 59, 67_d_ description, 5_a_, 67_a_ effects of dirt, 42 installation, 66_c_, 67_c_ removal, 67_b_ replacement, 48_b_, 56_b_, 59, 67 testing, 56_b_, 61_b_, 67_d_ Pressure tank charging, 32, 33 description, 5_a_, 66_a_ installation, 66_c_ removal, 66_b_ replacement, 4_g_, 48_b_ Pressure tank and valve assembly adjustment, 66_d_ description, 5_a_, 66_a_ installation, 66_c_ maintenance, 66_e_ removal, 66_b_ testing for leaks, 53_d_ Pressure-tank clamp description, 66_a_ installation, 66_c_ removal, 66_b_ repair, 51_e_ Pressure-tank valve description, 5_a_, 66_a_ effects of dirt, 42 installation, 66_c_ operation, 14_a_, 21, 55_g_, 61_b_ removal, 66_b_ replacement, 48_b_, 66_e_ testing, 51_a_, 53_c_ Pressure-tank valve handle, 14_a_, 21, 48_b_, 66 Preventive maintenance services, 50-56 Pump force, 38 air, 39_a_ - R - Rain, effect on firing, 41, 77_b_ Ranges, 4_c_, 15_b_, 15_c_, 22, 61, 67_d_ Recoil, 24_c_