Table 17-1. Fuel-Burning Winterization Kit Troubleshooting Chart (Cont)Malfunction11. (Continued)12. Leakage.13. Motor failure.Probable causec.d.e.a.b.a.b.c.Motor lag, low rpmScored cam ring bore.Foreign matter in pumpblade slots.Face of seal cage scored,or damaged seal “O”ring.Seal face of adapterscored.Worn brushes.Worn bearings.Burned armature.Corrective actionc. Check motor brushes for excessive wear.d. Replace the cam ring.e. Remove pump from motor: disassembleand clean pump and filter.a. Disassemble and inspect seal cage faceand “O” ring. Refinish or replace asrequired.b. Disassemble and inspect seal surface,Refinish or replace the adapter.a. Remove and replace.b. Replace motor.c. Replace motor.17-7. Heater Assembly and Component Inspection.a. Inspect regulator valve leaks or damagedthreads. Check resistance of solenoid coil. Resist-ante must be 150 ohms.(1) Inspect nozzle orifice for damaged threadsand obstruct ion at pin holes. Pin hole diameter is0.012 inch.(2) Inspect sintered filter for clogged or damagedcondition.b. FlameSwitchandQuartzRodInspection.—(1) Inspect flame switch for distorted or brokensprings, loose flame pivot points or stripped threadsand cracked or damaged insulation. Check flameswitch for continuity.(2) Inspect quartz rod for damage or burnedcondition.c. Inspect pump and motor assembly for damagedthreads and other damage.(1) Pump inspection.(a) Inspect adapter for damaged or scoredface, warped condition, damaged seal face and formotor shaft bore wear. Face of adapter must beparallel within 0.001 inch. Adapter bore diametermust be 0.315 to 0.318 inch.Adapter face must beparallel with rotor side of adapter within 0.001 inchper inch.(b) Inspect rotor and rotor blades for ex-cessive wear.See table 17-2 and inspect rotor andblades for proper dimensions.(c) Inspect seal cage for scored or damagedface. Remove all imperfections by lapping, or replaceseal cage.(d) Inspect cam ring and port plate fordamaged, scored, or warped position.(2) Motor assembly inspection.(a) Inspect fan for damaged blades, cracks,and breaks.(b) Inspect motor for damaged receptacleand worn brushes.d. Inspect burner chamber for defective threads,or burned or damaged condition.e. Inspect heat exchanger for damage or warpage.17-8. Repair.a. Replace all gaskets, seal rings, motor brushesand-ceramic vaporizer at each overhaul.b. Seal faces of adapter and seal cage can bedressed to remove minor nicks, scratches or scoring.Remove only material necessary to clean seal face.c. Replace all parts that do not pass inspectionsin paragraph 17-7 above and all electrical componentsthat do not pass electrical tests as outlined in testprocedure, paragraph 17-11 which follows.(1) Replacement of terminal board and limitswitch.17-3
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