Dodge Nitro. Manual — part 516

OPERATION-NON PRESSURE SYSTEM

The coolant reserve/overflow system works in conjunction with the radiator pressure cap. It utilizes thermal
expansion and contraction of coolant to keep coolant free of trapped air. It provides a volume for expansion and
contraction of coolant. It also provides a convenient and safe method for checking coolant level and adjusting
level at atmospheric pressure. This is done without removing the radiator pressure cap. The system also
provides some reserve coolant to the radiator to cover minor leaks and evaporation or boiling losses.

As the engine cools, a vacuum is formed in the cooling system of both the radiator and engine. Coolant will
then be drawn from the coolant tank and returned to a proper level in the radiator.

REMOVAL

REMOVAL-NON PRESSURE SYSTEM

Fig. 37: Identifying Radiator Pressure Cap, Hose & Coolant Recovery Bottle
Courtesy of CHRYSLER LLC

1 - RADIATOR PRESSURE CAP

2007 Dodge Nitro R/T

2007 ENGINE Cooling - Nitro

1. Remove hose (2) from radiator.

2. Remove recovery container mounting bolts.

3. Remove recovery container (3).

REMOVAL-PRESSURE SYSTEM

Fig. 38: Coolant Bottle - Pressure System
Courtesy of CHRYSLER LLC

2 - HOSE
3 - COOLANT RECOVERY BOTTLE

1 - PRESSURE CAP
2 - COOLANT BOTTLE
3 - MOUNTING NUTS

2007 Dodge Nitro R/T

2007 ENGINE Cooling - Nitro

1. Remove pressure cap from bottle.

2. Siphon coolant from pressure bottle (2) into a contaminant free container.

3. Disconnect coolant bottle to radiator hose at coolant bottle.

4. Disconnect lower hose at coolant bottle.

5. Remove mounting nuts.

6. Remove coolant bottle from bracket.

INSTALLATION

INSTALLATION-NON PRESSURE SYSTEM

4 - COOLANT BOTTLE TO RADIATOR HOSE
5 - CLAMP
6 - RADIATOR
7 - LOWER HOSE
8 - MOUNTING BRACKET

2007 Dodge Nitro R/T

2007 ENGINE Cooling - Nitro

Fig. 39: Identifying Radiator Pressure Cap, Hose & Coolant Recovery Bottle
Courtesy of CHRYSLER LLC

1. Position coolant recovery container (3).

2. Install coolant recovery container mounting bolts.

3. Install hose (2).

INSTALLATION-PRESSURE SYSTEM

Fig. 40: Coolant Bottle - Pressure System
Courtesy of CHRYSLER LLC

1 - RADIATOR PRESSURE CAP
2 - HOSE
3 - COOLANT RECOVERY BOTTLE

2007 Dodge Nitro R/T

2007 ENGINE Cooling - Nitro