TM 5-6115-593-12 TO 35C2-3-463-1 3-18. MAINTENANCE   OF   ELECTRIC   HYDRAULIC ACTUATOR.  See figure 4-37 and inspect sump tank for leaks, cracks, or distortion.  Inspect linkage for binding. 3-19. MAINTENANCE OF ETHER KIT.  (See figure 4-38.) a. Inspection. (1)   Inspect all lines from ether tank to engine for damage. (2)   Inspect all clamps securing lines for looseness. (3)   Inspect ether tank and solenoid valve for secure mounting. b. Service. (1)   Remove ether tank.  Shake the ether tank to determine existing supply.  If empty, replace ether tank. (2)   Replace the tank in support frame. 3-20. MAINTENANCE OF THE ENGINE ASSEMBLY. Refer   to   figure   4-40   and   inspect   the   engine assembly as follows: a. Inspect water pump belt for loose- ness, signs of wear, and oil soaking. Inspect the water pump for leaks, cracks, breaks, and loose mounting. b. Inspect the speed switch connector by removing the connector and examining for corrosion to pins, connectors, wires, and connections. c. Inspect  oil  level  gauge for broken   glass.      Check seal  in  oil  level  gauge cap for tears. d. Inspect the oil filler for dents, damaged threads, damaged oil filler cap, or damaged seal. e. Inspect the starter assembly for cracks, dents, loose, damaged electrical connections, and loose mounting. f. Inspect the oil pressure transmitter for leaks, cracks, loose mounting and loose electrical connections. g. Inspect the oil filter for leaks, cracks, breaks, and dents. h. Inspect the primary fuel filter for breaks or cracks.  Inspect threaded parts for damaged or stripped threads. i. Inspect the temperature transmitter for leaks, cracks, breaks, and loose connections. j. Inspect the oil pan assembly drain fittings, valves, and hose connections for leaks, cracks, and loose mounting. Inspect hose for deterioration, and tears.  Inspect oil pan for cracks, dents, and leaks. k. Inspect fuel injection pump for leaks, cracks, loose mounting and loose connections. l. Inspect the secondary fuel filters. m.   Inspect oil breathers on rocker arm assembly covers.  Refer to par.  4-8 a (5). 3-14