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Home >> Mercedes Benz >> 2013 >> ML350 Base >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Air Intake, Turbocharging - 166 Chassis >> Testing & Repair >> Remove/install circulation pump for low-temperature water circuit - AR09.41-P-6925MLJ

Remove/install circulation pump for low-temperature water circuit - AR09.41-P-6925MLJ

ENGINE 157, 276.8, 278 in MODEL 166 

Fig 1: Identifying Circulation Pump Remove/Install Components - Shown On Engine 278
G09981849Courtesy of MERCEDES-BENZ USA

Shown on engine 278 

REMOVINGINSTALLING Remove/install     
1 Remove lower underfloor paneling   AR61.30-P-1001GQ
2 Drain coolant at cooler for low-temperature water circuit    
NOTES Notes on coolant   AH20.00-N-2080-01A
3 Detach electrical connection (2) from charge air cooler circulation pump (M44)    
4 Remove screw/bolt (3) and remove the bracket(4)    
5 Detach hoses (5, 6) on charge air cooler circulation pump (M44)    
6 Remove circulation pump for charge air cooler (M44)    
7 Install in the reverse order    
8 Check cooling system for leaktightness Inspect cooling system for leaks AR20.00-P-1010GQ
DANGER 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
9 Perform an engine test run; check cooling system for proper operation and leaktightness