Mechanics

WATER PUMP...

2004 Chrysler Sebring

Engine Cooling problem
2004 Chrysler Sebring 6 cyl Front Wheel Drive Automatic 130000 miles

Hello.2004 Sebring LXi 2.7L V6. Water pump was replaced approx 1 year ago. I have a leak and the only place I can see coolant coming from is out of what looks like a weep hole right next to the bottom thermostat housing bolt.I'm thinking water pump again. Cooling system doesn't seem to be circulating properly. Heater does not blow hot. Replaced thermostat. My question is this. How difficult is it to replace the water pump? I'm a shadetree mechanic. Know my way around an engine alright. First time it was replaced my Dad's good friend who is a master mechanic did it. He has moved away since.I would like to do it myself.I enjoy working under the hood. Thank you for any help you may be able to provide.
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Jbzip64j
September 4, 2010.



WATER PUMP

REMOVAL- 2.7L


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NOTE: It is normal for the water pump to weep a small amount of coolant from the primary weep hole (black stain at weep passage). Do not replace the water pump if this condition exists. Replace the water pump if a heavy deposit or a steady flow of engine coolant is evident from the primary weep passage (Fig. 39) and (Fig. 40). This indicates a shaft seal failure and pump must be replaced. Coolant may leak from the secondary weep passage and fill the valley of the engine (Fig. 39) and (Fig. 41). If this condition is found, clean the primary weep passage of debris. Be sure to perform a thorough analysis before replacing water pump.

WARNING: DO NOT REMOVE PRESSURE CAP WITH THE SYSTEM HOT AND PRESSURIZED. SERIOUS BURNS FROM COOLANT CAN RESULT.

1.Disconnect negative battery cable.
2.Drain cooling system.

NOTE: The water pump is driven by the primary timing chain.

3.Remove the timing chain cover, timing chain, and all chain guides.


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4.Remove bolts attaching water pump to block (Fig. 38).
5.Remove water pump and gasket.

CLEANING
Clean gasket mating surfaces as necessary.

INSPECTION - 2.7L
Inspect and replace the water pump if it has any of the following defects:

1.Damage or cracks on the pump body.
2.Coolant leaks: If the shaft seal is leaking, this will be evident by traces of thick deposits of dried glycol running down from the pump primary weep passage (Fig. 39) and (Fig. 40). A thin black stain below the pump primary weep hole/passage is considered normal operation.
3.Coolant leaks: If the pump primary weep passage is plugged, coolant may come from the secondary weep passage and collect in the valley of the engine. The coolant will eventually run out the back side of the engine (Fig. 39) and (Fig. 41). Leakage from the secondary weep passage may give false indications that core plug(s) may be leaking on the back side of the engine block. If this condition is found, clean the primary weep passage of debris.
4.Impeller rubs inside of cylinder block.
5.Excessively loose or rough turning bearing.

NOTE: It is normal for the water pump to weep a small amount of coolant from the primary weep hole (black stain at weep passage). Do not replace the water pump if this condition exists. Replace the water pump if a heavy deposit or a steady flow of engine coolant is evident from the primary weep passage (Fig. 39) and (Fig. 40). This indicates a shaft seal failure and pump must be replaced. Coolant may leak from the secondary weep passage and fill the valley of the engine (Fig. 39) and (Fig. 41). If this condition is found, clean the primary weep passage of debris. Be sure to perform a thorough analysis before replacing water pump.

INSTALLATION - 2.7L

1.Clean all sealing surfaces.
2.Install water pump and gasket. Tighten mounting bolts to 12 Nm (105 inch lbs.).
3.Install timing chain guides, timing chain, and timing chain cover.
4.Reconnect negative battery cable.
5.Fill cooling system.

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Rasmataz
Sep 4, 2010.