Remove/install exhaust gas recirculation coolant return line

AR20.20-P-0011MCD

25.8.09

ENGINES 660.9 in MODEL 451.3 /4

P20.20-2331-06

Shown on engine 660.950

1 Exhaust gas recirculation coolant return flow line

2 Snap clamp

3 Coolant return flow line

4 Snap clamp

5 Snap clamp

6 Exhaust gas recirculation cooler

Modification notes

28.7.09

Lower rear drive module on engine 660.951 added

Step 1

 	Remove/install
1	Release rear drive module	With engine 660.951	AR01.00-P-3050MCC
2	Drain coolant		AR20.00-P-1142MCD
3	Loosen snap clamp (2) and remove coolant return line (3) from coolant return pipe	 Installation: Replace snap clamp (2).
			*450589073700
4	Loosen snap clamp (4) and remove exhaust gas recirculation coolant return flow line (1) from heater coolant pipe	 Installation: Replace snap clamp (4).
			*450589073700
5	Loosen snap clamp (5) and remove exhaust gas recirculation coolant return flow line (1) from exhaust gas recirculation cooler (6)	 Installation: Replace snap clamp (5).
			*450589073700
6	Remove exhaust gas recirculation coolant return flow line (1)	 Installation: Ensure that exhaust gas recirculation coolant return flow line (1) is routed correctly.
7	Install in the reverse order

Pliers

450 589 07 37 00