Nissan Altima 2007-2012 Service Manual: Cooling fan
Removal and Installation
1. Fan blade
2. Fan shroud and motor assembly
REMOVAL
1. Drain engine coolant from the radiator. Refer to CO-12, "Changing Engine Coolant".
CAUTION: Perform when engine is cold.
2. Remove air cleaner duct assembly. Refer to EM-25, "Removal and Installation".
3. Disconnect radiator upper hose.
4. Disconnect fan motor connectors.
5. Remove radiator cooling fan assembly.
INSTALLATION
Installation is in the reverse order of removal.
• After installation refill engine coolant and check for leaks. Refer to CO-12, "Changing Engine Coolant" and CO-11, "System Inspection".
CAUTION: Do not spill coolant in engine compartment. Use a shop cloth to absorb coolant.
• Cooling fan is controlled by ECM. For details, refer to EC-613, "System Description".
Disassembly and Assembly of Cooling Fan
1. Fan blade
2. Fan shroud
3. Fan motor
DISASSEMBLY
1. Remove fan blade nut.
2. Remove fan blade from fan motor.
3. Remove fan motor bolts and remove fan motor from fan shroud.
ASSEMBLY
Assembly is in the reverse order of disassembly.
Radiator
Removal and Installation
1. Radiator
2. CVT oil cooler hose (if equipped)
3. Radiator hose (upper)
4. Radiator hose (lower)
5. Cooling fan
6. Reservoir tank
7. Reservoir hose
8. Radiator fil ...
Water pump
Removal and Installation
1. Water pump
2. Gaskets
3. Water pump housing
4. Water pipe
5. O-ring
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could occur
from ...
Other materials:
Positive crankcase ventilation
Description
This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase
blow-by gas to the intake
manifold.
During partial throttle operation of the engine, the intake manifold sucks the
blow-by gas via the PCV ...
Basic inspection
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1.GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the
condition and the environment when
the incident/malfunction occurred) using the “Diagnostic Work Sheet”. (Refer ...
Magnet clutch
Description
SYSTEM DESCRIPTION
Front air control controls A/C compressor operation by ambient temperature
and signal from ECM.
Low Temperature Protection Control
Front air control will turn the A/C compressor ON or OFF as determined
by a signal detected by ambient sensor.
When ambient te ...