R750EU5 - IE3 - TE4 - IE4 - ISE4
English          60       Ed.8 / 10-2012
GB
 Problem  Cause    Remedy
 The coolant temperature warning 
light comes on  
 Broken or worn belt  
 Replace the belt (See “Changing 
the belt (type Poly-V)”)  
 
 
 Output reduction  
 
 
 
 Clogged fuel lter  
 Replace lter (See “Fuel lter 
replacement.”)  
 Presence of air in the fuel supply 
circuit  
 Carry out bleeding (See “Fuel 
supply circuit bleeding”)  
 Injection pump malfunction 
 Replace the pump  
 Apply to an authorised workshop
 Dirty or faulty injectors  
 Replace the injectors
 Apply to an authorised workshop
 clogged air lter    Clean or replace the lter  
 Engine overheating    Apply to an authorised workshop  
 Insufcient combustion air ow    Apply to an authorised workshop  
 The battery warning light comes 
on  
 The alternating current generator 
does not charge the battery  
 Check and, if appropriate, 
replace the alternating current 
generator 
Apply to an authorised workshop  
 The oil pressure warning light 
comes on  
 Engine oil pressure too low  
 Turn off the engine. Apply to an 
authorised workshop  
 The warning light which detects 
water in fuel comes on  
 Presence of water in the fuel lter  
 (See chapter “OPERATING 
INFORMATION”, paragraph 
“
Recommendations for use 
point no.9)   
 The warning light of the engine 
MIL/ SYS (*) turns on.  
 Engine malfunction    Apply to an authorised workshop  
 The particular lter indicator light 
turns on 
 Particulate lter is clogged
 The particulate lter regeneration 
is necessary (see chapter 
““OPERATING INFORMATION””, 
paragraph “Particulate Filter 
Regeneration”
(*) The luminous warning light MIL (amber 
colour) turns on to signal the malfunction 
of the engine due to the surpassing of 
emission thresholds.
The luminous warning light SYS (red 
colour) turns on to signal the malfunction 
of the engine without the surpassing of 
particle emission thresholds.