Thermo King SLXi Spectrum, Maintenance Manual

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Mechanical Diagnosis 13-6
Oil pressure too low or drops
suddenly. Minimum oil pressure
for a hot engine is 1.03 bar, 15 psi Insufficient oil in pan Add oil
Oil relief valve sticking Disassemble and clean oil pressure regulator valve
Defective oil pressure gauge Check oil line to oil pressure gauge to see if it is
blocked. Check oil pressure gauge. Replace if
necessary
Worn oil pump, camshaft, main or
connecting rod bearings, loose oil
gallery plug Repair engine
High oil consumption Oil leakage Check and eliminate possible causes at cylinder head
cover, oil lines, oil filter, front timing cover or
crankshaft seals
Damaged valve seals Replace seals on valve stem
Worn valve stem Replace valves
Broken piston rings or cylinder
bore worn or scored Have engine repaired and rebored.
Replace broken piston rings
Clogged air cleaner system Unclog air cleaner
Clogged crankcase breather Clean breather system
Poor compression Check and eliminate possible causes.
Repair as necessary
Battery is not recharging or is
overcharging Loose connections in electrical
system Check all electrical connections and charging system
Alternator defective Repair alternator
Voltage regulator faulty Replace regulator
Battery defective Replace battery
Voltage regulator wire harness
defective Replace wire harness
Loose alternator belt Replace alternator belt
Defective Battery Sentry module Replace Battery Sentry module
CONDITION POSSIBLE CAUSE REMEDY