Remove/install coolant lines - AR20.20-P-7440MTA

ENGINE 133 in MODEL 117, 156, 176 

MODIFICATION NOTES

06.08.2014

Screw holder on cylinder head / holder

BA09.40-P-1010-01X

Fig 1: Coolant Lines Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Drain coolant		AR20.00-P-1142MTA
	Only perform operation steps 2 to 6 to remove feed line (1)
2	Remove air filter housing		AR09.10-P-1150MTA
3	Remove screw/bolt (5)	Bolt, clamp between coolant line for feed line/return flow	*BA09.40-P-1007-01X
4	Detach heat protection cable bushing from feed line (1)	Installation:  Check heat protection cable bushing for damage; replace if necessary.
5	Remove screw/bolt (6)	Installation:  Replace sealing ring.
		Bolt, coolant line for feed line to turbocharger/crankcase/bracket	*BA09.40-P-1005-01X
6	Remove screw/bolt (7) and feed line (1) upwards	Installation:  Replace sealing ring. Pay attention to correct routing of feed line (1).
		Bolt, coolant line for feed line to turbocharger/crankcase/bracket	*BA09.40-P-1005-01X
	Only perform operation steps 7 to 11 to remove return line (2)
7	Remove engine air intake duct
8	Remove screw/bolt (5)	Bolt, clamp between coolant line for feed line/return flow	*BA09.40-P-1007-01X
9	Remove screw/bolts (8) and pull return line (2) somewhat to the front	Bolt, bracket to cylinder head/bracket	*BA09.40-P-1010-01X
10	Detach return line (2) from Y-fitting at transmission cooling coolant circulation pump		AR09.41-P-1311-01AL
11	Remove screw/bolt (9) and return line (2) upwards	Installation:  Replace sealing ring.
12	Install in the reverse order
	Check
13	Check cooling system for leaktightness		AR20.00-P-1010MTA
	Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
14	Carry out an engine test run, checking the engine for proper operation and leaktightness

TURBOCHARGER

Number	Designation		ENGINE 133
BA09.40-P-1005-01X	Bolt, coolant line for feed line to turbocharger/crankcase/bracket	Nm	9

TURBOCHARGER

Number	Designation		ENGINE 133
BA09.40-P-1007-01X	Bolt, clamp between coolant line for feed line/return flow	Nm	9

TURBOCHARGER

Number	Designation			ENGINE 133
BA09.40-P-1010-01X	Bolt, bracket to cylinder head/bracket	Stage 1	Nm	20
		Stage 2	∠°	90