600H, 700, 750, 750H, 750HH, 825, 900, 900H, 1050 T3 CAT User Manual 5: Maintenance
02250197-981 R01
Subject to EAR, ECCN EAR99 and related export control restrictions. 67
Excessive compressor
fluid consumption
Clogged return line Clear orifice.
Leak in the lubrication system
Check all pipes, connections and com-
ponents
Separator element damaged or not
functioning properly
Change separator element.
Defective minimum pressure/check
valve
Repair or replace.
Fluid receiver tank overfilled Drain to proper level.
Compressor overheating
Loose or broken fan belt Tighten or change belt
Dirty fluid cooler core Clean core thoroughly.
Dirty aftercooler Clean core thoroughly.
Dirty radiator core Clean core thoroughly.
Faulty thermostat element Change thermostat element.
Plugged fluid cooler tube (internal) Clean tube thoroughly.
Low receiver tank fluid level Refill.
Plugged compressor fluid filter Change element.
Engine overheating
Loose or broken fan belt Tighten or change belt.
Dirty radiator core Clean thoroughly.
Dirty oil cooler Clean thoroughly.
Low water level Refill.
Dirty aftercooler Clean thoroughly.
Low fluid level Refill.
Faulty water pump Change pump.
Plugged radiator Clean and flush thoroughly.
Defective engine thermostat Replace engine thermostat.
Shutdown panel lights Faulty switch indicated by light Replace the switch.
Check engine light
Engine safety switch (low coolant)
fault
Replace the switch (Caterpillar part).
Engine warning flashing
light
Count number of flashes. This will
flash trouble code.
Determine trouble code and call Cater-
pillar Service Representative to correct
problem.
Symptom Probable cause Remedy
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