TM 5-4320-215-12 Inspection Service Quarterly ENGINE-Continued 46 Refer to TM 6-2805-209-12 and correct all deficiencies noted. 47 47 Batteries, box, and cables.  Inspect the electrolyte for improper level. The electrolyte should be three-eighths inch above the plates Test the specific gravity and record it on DA Form 464.  Inspect the batteries for cracks and excessive corrosion.  Inspect the battery cables for loose connections, fraying, and corrosion.  Inspect the battery box for dents, insecure mounting, and corrosion. 47 Clean all corrosion from the batteries, box, and cables.  Replenish the electrolyte as necessary (par.  10).  Replace defective batteries (par. 12).  Replace a defective battery box and cables (par.  58).  Tighten all loose connections. 48 48 Generator and starter.  Inspect the generator and starter for loose mount- ing hardware and electrical connections.  Inspect for excessive dirt and grease. 48 Tighten all loose mounting hardware and electrical connection.  Remove all dirt and grease.  Replace a defective generator (par.  650).  Refer to TM 5-2805-209-12 and replace a defective starter. 49 49 Magneto.  Inspect the magneto for cracks, breaks, and loose mount- ing.  Inspect the spark plug lead connections for looseness and cor- rosion.  Remove the end cap cover and inspect the distributor block for cracks, breaks, dirt, and worn terminals.  Inspect the point get for wear, deposits, and improper adjustment. 49 Refer to TM 5-2805-209-12 and correct all deficiencies noted. 50 50 Wiring and switches.  Inspect all wiring for broken or frayed insulation and loose or broken connection Inspect all switches for insecure mounting, loose or corroded terminals and connections, and faulty op eration. 50 Refer to TM 6-2805-20-12 and correct all deficiencies noted. 51 51 Voltage regulator.  Inspect the voltage regulator for insecure mounting, loose electrical connections, and improper operation. 51 Tighten all loose mounting hardware and electrical connections Ad- just or replace a defective voltage regulator as necessary (par.  51). 52 52 Reflectors.  Inspect the reflectors for loose or missing mounting hardware and broken glass. 52 Tighten all loose mounting hardware.  Replace a defective reflector (par.  58). 57 57 Gages.  Inspect all gages for cracked or broken glass.  Inspect for in- secure mounting and loose connections.  Inspect the gage for improp- er operation. 57 Tighten all loose mounting hardware and connections.  Refer to TM 5-2805209-12 and correct all deficiencies noted. 58 58 Meters.  Inspect all meters for cracked or broken glass and insecure mounting.  Inspect all meters for improper operation. 58 Tighten all loose mounting hardware. Warning: Disconnect the batteries when servicing electrical instru- ments, except when current is necessary for testing. Replace a defective ammeter (par.  52).  Refer to TM 5-28062-12 for replacement of all other meters. 59 59 Valves.  Inspect the suction valve and gasket for cracks, breaks, and de- terioration.  Inspect for improper operation. 59 Replace a defective suction valve (par.  44). 28