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Mechanical Diagnosis
149
Engine is sooting heavily, emits
thick black clouds of smoke
(excessive fuel to air ratio)
Wrong fuel
Drain and refill with correct fuel
Clogged air intake system
Clean air cleaner
Restricted exhaust system
Clean or replace
Opening pressure of nozzle is too
low or needle sticks
Repair nozzle. Replace if necessary
Injection amount too great
Have pump repaired
Oil being drawn in
Check oil level in oil bath air filter
Injection pump timing
Check timing of injection pump
Excessive load
Check drive system and engine oil
pressure
Engine knocks
Insufficient air
Clean air filter
Air in fuel system
Bleed fuel system
Engine is cold
Warm up
Fuel return line plugged
Remove restriction
Injection pump not timed
Retime injection pump
Injection nozzle fouled or opening
pressure too low
Clean, repair or replace injection
nozzle
Dirty radiator
Clean radiator
Worn engine parts
Overhaul engine
Engine runs hot
Engine coolant is low
Add coolant slowly while engine is in
operation
Dirty or plugged radiator
Clean radiator
Cooling system heavily scaled
Clean cooling system
Water pump leaks
Repair or replace water pump
Worn or loose belt
Replace belt or adjust
Cylinder head gasket leaks (bubbles
appear in radiator if cylinder gasket
is leaking)
Replace cylinder head gasket.
Correct gasket
Faulty thermostat
Check or replace the thermostat
Faulty temperature gauge
Replace gauge
Oil pressure too low or drops
suddenly
Insufficient oil in pan
Refill oil base after correcting cause
of loss
Leak in oil line
Tighten oil line fittings
Oil relief valve sticking
Disassemble and clean oil pressure
regulator valve
Faulty oil pressure switch
Replace if necessary
Worn oil pump, camshaft, main or
connecting rod bearings, loose oil
gallery plug, oil in water through
crack
Repair engine
High oil consumption
Oil leakage
Check and eliminate possible
causes
Condition
Possible Cause
Remedy
Summary of Contents for 914970
Page 3: ...3...
Page 10: ...Table of Contents 10...
Page 40: ...Operating Instructions 40...
Page 82: ...Electronic Controls 82...
Page 92: ...Electrical Maintenance 92...
Page 124: ...Refrigeration Maintenance 124...
Page 140: ...Hilliard Clutch Maintenance 140...
Page 160: ...Refrigeration Diagrams 160...
Page 163: ...Index 163 W wiring 85 wiring diagrams 165...
Page 164: ...Index 164...
Page 166: ...Wiring and Schematic Diagrams Index 166...
Page 167: ...167 Cab Control RD Wiring Diagram...
Page 168: ...168 RD w o Thermostat Cab Control Schematic...
Page 169: ...169 RD Cab Box Wiring Diagram...
Page 170: ...170 RD Cab Control w Thermostat Schematic Diagram...
Page 171: ...171 RD 50 STD 3 Phase Wiring Diagram Page 1 of 2...
Page 172: ...172 RD 50 STD 3 Phase Wiring Diagram Page 2 of 2...
Page 173: ...173 RD 50 STD 3 Phase Schematic Diagram Page 1 of 2...
Page 174: ...174 RD 50 STD 3 Phase Schematic Diagram Page 2 of 2...
Page 175: ...175 RD 30 STD Wiring Diagram Page 1 of 2...
Page 176: ...176 RD 30 STD Wiring Diagram Page 2 of 2...
Page 177: ...177 RD 30 STD Schematic Diagram Page 1 of 2...
Page 178: ...178 RD 30 STD Schematic Diagram Page 2 of 2...
Page 179: ...179 RD 30 C S Wiring Diagram Page 1 of 2...
Page 180: ...180 RD 30 C S Wiring Diagram Page 2 of 2...
Page 181: ...181 RD w CYCLE SENTRY Schematic Diagram Page 1 of 2...
Page 182: ...182 RD w CYCLE SENTRY Schematic Diagram Page 2 of 2...
Page 183: ...183 RD 50 C S 3 Phase Wiring Diagram Page 1 of 2...
Page 184: ...184 RD 50 C S 3 Phase Wiring Diagram Page 2 of 2...
Page 185: ...185 RD w CYCLE SENTRY Schematic Diagram Page 1 of 2...
Page 186: ...186 RD w CYCLE SENTRY Schematic Diagram Page 2 of 2...