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Engine Cooling System: Removal & Installation Dodge Nitro I

Accessory Drive Belts 4 illustrations ~719 words

INSTALLATION

1 - POWER STEERING BELT
2 - POWER STEERING PULLEY
3 - ACCESS HOLE
4 - CRANKSHAFT PULLEY
  1. Position power steering belt (1) on crankshaft pulley (4). Make sure belt is fully seated in crankshaft pulley grooves.
  2. Position top of power steering belt on the top of the power steering pulley (2). NOTE: Use only wire ties with nylon locks, not metal.
  3. Working from the back side of the power steering pulley (2) , insert a nylon wire tie, 7.75X1/8x.0.050 in, through one of the access holes (3) in the pulley.
  4. Tighten the wire tie to hold the drive belt in position.
  5. While holding the drive belt to make sure it stays in position, slowly rotate the engine clockwise.
  6. Once the belt is in position on the pulley, continue rotating the engine until the wire tie snaps.
  7. Remove the wire tie from the vehicle.
1 - RADIATOR
2 - ELECTRIC COOLING FAN CONNECTOR
3 - FAN SHROUD
4 - 2 SPEED ELECTRIC COOLING FAN
  1. Install fan shroud assembly into the vehicle. Tighten fan shroud to radiator bolts to (5.5 N.m (50 in. lbs.).
  2. Install shroud mounting bolts tighten bolts to 10 N.m (89 in. lbs.).
  3. Connect fan motor wire connector to harness connector, and attach connector to shroud.
  4. Connect battery negative cable.
  5. Start engine and check fan operation.

Scheme 24

Scheme 24: DESCRIPTION
Scheme 24: DESCRIPTION
1 - VISCOUS FAN DRIVE
2 - THERMOSTATIC SPRING
3 - MOUNTING NUT TO WATER PUMP HUB
CAUTIONIf the viscous fan drive is replaced because of mechanical damage, the cooling fan blades should also be inspected. Inspect for fatigue cracks, loose blades, or loose rivets that could have resulted from excessive vibration. Replace fan blade assembly if any of these conditions are found. Also inspect water pump bearing and shaft assembly for any related damage due to a viscous fan drive malfunction.

The thermal viscous fan drive (1) is a silicone-fluid-filled coupling used to connect the fan blades to the water pump shaft. The coupling allows the fan to be driven in a normal manner. This is done at low engine speeds while limiting the top speed of the fan to a predetermined maximum level at higher engine speeds. (Scheme 24)

1 - AIR DAM
2 - RADIATOR
3 - AIR DAM
4 - A/C CONDENSER
5 - AIR SEAL
CAUTIONBefore installing the radiator or A/C condenser, be sure the radiator-to-body and radiator-to-A/C condenser rubber air seals are properly fastened to their original positions. These are used at the top, bottom and sides of the radiator and A/C condenser. To prevent overheating, these seals must be installed to their original positions.
1 - RADIATOR
2 - ALIGNMENT DOWEL
3 - RADIATOR LOWER ISOLATOR
4 - RADIATOR LOWER CROSSMEMBER
  1. Gently lower the radiator and fan shroud into the vehicle. Guide the two radiator alignment dowels into the rubber grommets located in lower radiator crossmember.
  2. Connect the radiator upper and lower hoses and hose clamps to radiator. CAUTION: The tangs on the hose clamps must be positioned straight down.
  3. Install coolant reserve/overflow tank hose at radiator.
  4. Install both radiator mounting bolts.
  5. Reconnect the electric cooling fan.
  6. Install the grille. Refer to «INSTALLATION»(ref-306147-S25858635422008120900000) .
  7. Reinstall the cooling fan to the engine.
  8. Rotate the fan blades (by hand) and check for interference at fan shroud.
  9. Refill cooling system. See «STANDARD PROCEDURE»(ref-306154-S25259837052008120900000) .
  10. Connect battery cable at battery.
  11. Start and warm engine. Check for leaks.

Scheme 25

Scheme 25: DESCRIPTION
Scheme 25: DESCRIPTION
1 - MAIN SPRING
2 - GASKET RETAINER
3 - STAINLESS STEEL SWIVEL TOP
4 - RUBBER SEALS
5 - SPRING LOADED VALVE
6 - COOLANT PRESSURE BOTTLE
7 - FILLER NECK
8 - OVERFLOW NIPPLE

The cooling system cap is located on the coolant pressure bottle for 3.7L/2.8L The cap construction includes; stainless steel swivel top, rubber seals and retainer, main spring (1), and a spring loaded valve (5).

REMOVAL

  1. Remove electric cooling fan. See «REMOVAL»(ref-306154-S21887878352008120900000) .
  2. Position cooling fan out of the way.
  3. Remove the transmission cooler line retaining block nut.
  4. Remove transmission cooler lines from transmission lines.
  5. Using Release Tool 8875A, disconnect transmission cooler tube from the transmission, see «STANDARD PROCEDURE»(ref-306154-S34899550642008120900000) .
  6. Remove the transmission cooler mounting bolts.
  7. Remove transmission cooler from vehicle.
  1. Position transmission cooler in vehicle.
  2. Install transmission mounting bolts. Tighten to 14 N.m (123 in. lbs.)
  3. Install transmission cooler lines into transmission, see «STANDARD PROCEDURE»(ref-306154-S34899550642008120900000) .
  4. Install locking plate and nut. Tighten nut to 22.5 N.m (200 in. lbs.)
  5. Install electric cooling fan. See «INSTALLATION»(ref-306154-S41209272742008120900000) .

Scheme 26

Scheme 26: DISCONNECT
Scheme 26: DISCONNECT
1 - QUICK CONNECT FITTING
2 - DUST CAP
3 - OIL COOLER LINE
4 - SPECIAL TOOL 8875A
  1. Remove dust cap by pulling it straight back off of quick connect fitting (1).
  2. Place Release Tool 8875A (4) onto transmission cooler line with the fingers of the tool facing the quick connect fitting.
  3. Slide Release Tool 8875A down the transmission line and engage the fingers of the tool into the retaining clip. When properly engaged in the clip, the tool will fit flush against the quick connect fitting.
  4. Rotate the release tool 60° to expand the retaining clip.
  5. While holding the release tool against the quick connect fitting, pull back on the transmission cooler line to remove.
  6. If quick connect fitting is damaged or leaking at transmission oil cooler or transmission, remove fitting.

Scheme 27

Scheme 27: CONNECT
Scheme 27: CONNECT
1 - QUICK CONNECT FITTING
2 - CLIP
3 - OIL COOLER LINE
4 - DUST CAP
  1. If removed, install quick connect fitting into transmission oil cooler or transmission. Tighten fitting to 15 N.m (132 in. lbs.).
  2. Align transmission cooler line (3) with quick connect fitting while pushing straight into the fitting.
  3. Push in on transmission cooler line until a "click" is heard or felt.
  4. Slide dust cap (4) down the transmission cooler line and snap it over the quick connect fitting until it is fully seated and rotates freely. Dust cap will only snap over quick connect fitting when the transmission cooler line is properly installed.

Note. If dust cap will not snap into place, repeat assembly step #2.

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