Unscheduled Maintenance

Date Test Miles Service Activity Downtime Hours
01-28-93 682 Air conditioning dryer bracket cracked. Bracket welded/repaired. 0.5 0.5
04-08-93 5836 Air compressor not functioning. Air compressor replaced. 1.5 1.5
02-10-93 2246 One rubber tie down on the left rear compartment door is broken. Rubber tie down replaced. 0.5 0.5
04-02-93 5195 Rain leaking through windshield seal at all corners. Rear center window leaking and right rear side window is leaking. Monitor for further leakage. 0.0 0.0
04-09-93 6049 Right rear window shattered going over random pot holes. Window frame has small crack at upper left corner. Opening covered with plastic. 0.5 0.5
04-13-93 6099 Bonding material around all four fender flairs at wheel wells are cracking. Monitor for further cracking. 0.0 0.0
02-19-93 2937 Three clearance lights burned out. Three light bulbs replaced. 0.5 0.5
03-01-93 3247 Engine misfiring due to lack of power. Test driving and trouble-shooting. No problems found. 2.5 2.5
03-02-93 3430 Engine misfiring due to lack of power. Spark plugs replaced and gapped; plug wires, distributor cap and distributor air gap all inspected. Road testing. No improvement to problem. 4.0 4.0
03-08-93 3461 Turbo air cooler has a small pin hole leak. Air cooler removed, repaired, and replaced. Test drive, engine is still misfiring, lack of power. Hercules notified, representative scheduled. 144.0 6.0
03-11-93 3461 Engine misfiring due to lack of power. Hercules rep inspected the primary fuel filter which he stated was not located in the proper place. (The filter should be located between the fuel tank and the engine, not between the fuel port and the fuel tank). Hercules rep inspected the spark plugs, found spark plugs were gapped at .020." Rep regapped plugs to .014." Test drove bus, engine ran smoothly and the secondary fuel regulator maintained a constant 5" water. Hercules rep determined the engine misfiring was due to improper spark plug gap. 80.0 8.0
03-11-93 3553 Bus cannot maintain proper speeds on the Test Track due to excessive engine misfiring and lack of power. Trouble shooting: 3/16 - 3/18/93. Checked engine compression, replaced spark plugs (.015"), replaced CNG fuel filter, secondary fuel regulator replaced. 72.0 24.0
03-25-93 4403 Engine shutting down. Restart bus, engine misfiring and lack of power. Replaced high pressure regulator and calibrated. Inspected secondary regulator and found it full of oil. Manufacturer notified. Secondary regulator replaced. Spark plugs replaced. Test drive, engine runs smooth. Manufacturer notified. Secondary regulator replaced. Spark plugs replaced. Test drive, engine runs smooth. Manufacturer will deliver in-line fuel filter to be installed between the primary and secondary fuel regulators. 48.0 8.5
02-10-93 2246 Exhaust pipe clamp loose and one bolt missing at tailpipe hanger. Clamp tightened and bolt replaced. 0.5 0.5
02-04-93 2176 Fuel tank bracket broken and fuel leaking from 1/4" stainless steel line between tanks. Fuel tanks shut off 1/4" line removed. Parts ordered. 1.0 1.0
02-08-93 2176 Parts ordered on 02/04/93 arrived. Three broken fuel tank brackets replaced; both brackets on the rear center tank and the front bracket on the left rear tank. 1/4" fuel line between tanks also replaced. 100.0 8.0
02-09-93 2196 Engine idles but will not produce enough power to drive. CNG high pressure regulator not functioning properly. CNG high pressure regulator replaced. 21.0 1.5
02-10-93 2246 Throttle return spring is broken. Throttle return spring replaced. 0.25 0.25
02-10-93 2246 CNG high pressure regulator has a slight leak. Regulator tightened. 0.25 0.25
02-11-93 2491 Front bracket on the left rear fuel tank is broken. Fuel tank bracket replaced. 9.0 4.0
02-18-93 2937 Throttle locked up, will not move. Cylinder frozen from weather, air system and throttle brake valve thawed out. 14.75 3.0
03-25-93 4403 Rear bracket on left rear fuel tanks is broken. Both brackets replaced on left rear fuel tank. 3.0 3.0
03-29-93 4408 Fuel filters sent by manufacturer arrived. Two in-line fuel filters installed between primary and secondary fuel regulators. 6.0 6.0
04-03-93 5369 1/4" stainless steel line leaking due to broken fuel tank brackets. Two 1/4" vent lines, one 1/4 line fuel line repaired. Both right rear fuel tank brackets replaced. 46.0 5.5
04-06-93 5635 Rear center fuel tank has broken rear bracket. Both brackets replaced. 64.0 3.0
04-20-93 6754 Rear center fuel tank; both brackets are broken. Both brackets replaced. 2.0 2.0
04-21-93 6880 Rear left fuel tank; both brackets are broken. Both brackets replaced. 2.0 2.0
04-26-93 7492 Rapid drop in fuel pressure. Bus leaking fuel. Fill port connection found to be loose. Connection tightened and all fuel lines inspected. 1.0 1.0
04-29-93 7500 Final inspection found rear center tank brackets broken. Both brackets replaced. 0.5 0.5
01-27-93 384 Wheelchair lift not functioning properly. Wheelchair lift will not be functioned until repairs are made during P.M. inspection on 01-28-93. 0.0 0.0
02-10-93 2246 Two fasteners loose in wheelchair lift tower. Fasteners tightened. 0.25 0.25
02-10-93 2344 Outer barrier of wheelchair lift will not deploy. Lift not operating. Will trouble-shoot at next PM inspection. 0.0 0.0
02-19-93 2937 Wheelchair lift not functioning since reported on 02/10/93. Trouble-shooting wheelchair lift problems. Problem not solved. Chair lift inoperative. 4.0 4.0
02-24-93 3007 Wheelchair lift not functioning. Mobile Tech rep is trouble-shooting. Outer barrier adjusted. 0.5 0.5
02-25-93 3124 Various nuts and bolts mounting the wheelchair lift are loose. Nuts and bolts tightened. 0.25 0.25
03-02-93 3430 Wheelchair lift outer barrier cylinder missing a nut. Nut replaced and operation checked. 1.0 1.0
04-13-93 6099 Wheelchair lift has various broken bolts and switch and rail guide is out of adjustment. Broken bolts replaced and switch adjusted. 4.0 4.0
01-28-93 682 Front leveling valve mounting bracket is cracked. Bracket welded/repaired. 0.5 0.5
01-29-93 928 Shock bushings worn and pounded out. All shock bushings replaced. 2.0 2.0
02-10-93 2246 Front leveling valve mounting bracket is broken. Bracket welded/repaired. 0.25 0.25
02-19-93 2937 Front and rear ride heights not at proper setting. Front and rear ride height adjusted. 0.5 0.5
04-08-93 5836 Front leveling valve mounting bracket is cracked. Welded/repaired bracket. 1.0 1.0
04-13-93 6099 Front leveling valve mounting bracket is broken. Welded/repaired bracket. 1.0 1.0