TM  10-3930-638-24&P 2-31.   SENDING   UNITS   AND   SWITCHES   MAINTENANCE   (cont) e. Stop Light and Hydraulic Filter Snitches (cont). (1) Hydraulic Filter Restriction Switch. STEP LOCATION ITEM ACTION REMARKS REMOVAL 1 Engine  compart- a. Screw (1) and wire Remove From  terminal  on  switch  (3) ment front, left lead (2) side of vehicle b. Switch (3) R e m o ve Turn counterclockwise and pull from filter head c. Retainer halves (4) Push together, Remove  resistor  (5) turn  counter- clockwise  and separate CLEANING WARNING Dry cleaning solvent (P-D-680), used to clean parts is toxic and flammable. Wear protective goggles and gloves and use only in a well ventilated area. Avoid contact with skin, eyes, and clothes and don’t breathe vapors. Do not use near open flame or excessive heat and don’t smoke when using it. Failure to do so could cause serious injury. If you become dizzy while using cleaning  solvent,  get  fresh  air  immediately,  and  get  medical attention. If contact with skin or clothes is made, flush with large amounts of water. If contact with eyes is made, wash eyes with water  immediately,  and  obtain  medical  aid  immediately. WARNING Wear safety glasses when drying parts with compressed air. Failure to do so could cause serious injury to eyes and possible blindness. If you hurt your eyes or if a foreign object is blown into  your  eyes,  seek  medical  attention  immediately. 2 Screw (1) Clean Use  cleaning  solvent  P-D-680. Dry thoroughly with compressed air 3 Wire lead and terminal Clean Use cleaning solvent P-D-680 on connector and terminal only INSPECTION 4 Screw (1) and switch (3) Inspect Replace if worn or cracked, or if threads damaged 5 Wires Inspect Replace if insulation frayed, or if conductor  broken 2-171