Charge-Air Cooling; Intercooler - Checking Condensate Drain For Coolant Leakage And Obstruction - MTU 12V4000M73 series Operating Instructions Manual

7.10 Charge-Air Cooling

7.10.1 Intercooler – Checking condensate drain for coolant leakage and obstruction
DANGER
Moving or rotating parts.
Risk of crushing, danger of limbs being caught up or drawn in!
• Operate engine in lower load range only. Keep away from the danger zone of the engine.
WARNING
High level of engine noise when the engine is running.
Risk of damage to hearing!
• Wear ear protectors.
WARNING
Compressed air gun ejects a jet of pressurized air.
Risk of injury to eyes and damage to hearing, risk of rupturing internal organs!
• Never direct air jet at people.
• Always wear safety goggles/face mask and ear defenders.
Checking condensate drain of
intercooler for coolant leakage
and obstruction
u With the engine running, check outlet of the two condensate drain bores (arrows).
Item
Oily water (condensate) escapes
Air escapes
Coolant escapes
Findings
Normal
Condensate drain bore is
free of obstructions
(Air escapes freely)
Condensate drain bore is
clogged
(Air cannot escape or es-
cape with restrictions only)
Intercooler leaky
MS150045/03E 2018-08 | Charge-Air Cooling | 207
Action
No action required
No action required
Clean drain bores (arrowed)
and blow out with com-
pressed air.
Contact Service.
Carry out emergency meas-
ures (→ Page 208) before
re-starting the engine.