REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Jeep Grand Cherokee (from 1993 to 1999, the year of issue)

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Jeep
	Grand Cherokee
		Introduction
		Adjustment and routine maintenance
		The straight six-cylinder engine
		The V8 engine
		Procedure of the general and engine major repairs
		Systems of cooling, heating and air conditioning
			general information
			Antifreeze - the general information
			Check of functioning and thermostat replacement
			Check of serviceability and replacement of the cooling fan and clutch his clutch
			Check the operation and to replace the coolant temperature sensor
			Removing and installing radiator and cooling system expansion tank
			Check operation of the water pump
			Removal and installation of the water pump
			Check of an electric circuit and replacing the motor fan heater and air conditioner
			Removal and installation of the unit heater fan
			Removal and installation of assemblage of the control heater and air conditioner
			Removing and installing heat exchanger heater
			Check of serviceability and maintenance of heating systems and air-conditioning
			Diagnosis of automatic temperature control (ATC) without removing it from the car
			Removing and installing battery (accumulator) air conditioning system
			Removal and installation of the air conditioning system compressor
			Removal and installation of air conditioning condenser
			Removal and installation of a calibrated nozzle tube
			Removal and installation of evaporator air conditioning system
		The power supply system and exhaust
		The system of electric motor
		Systems of decrease in toxicity of the fulfilled gases and engine management
		Manual box of a gear change
		Automatic Transmission
		Transfer Case
		Clutch and transmission line
		Brakes
		Suspension and steering
		Body
		The system of on-board electrical equipment
		Controls and operation receptions

printable version

Removal and installation of assemblage of the control heater and air conditioner

See. The warning at the beginning of Section Removal and installation of the unit heater fan.

PERFORMANCE ORDER

Disconnect the negative wire from the battery.
Give me six screws and remove the lining of the central part of the dashboard.

To provide access to the two bottom screws, remove the ashtray.

To remove the lining of the central part of the dashboard, remove the ashtray and give the six screws.

Give the four screws that secure the control panel, heater and air conditioner.

Give the screws that secure the control panel, heater and air conditioner.

Remove the control panel out of its socket by pulling it forward, disunite electric sockets couplings vacuum lines.

Remove the control assembly heater and air conditioner from its nest and disunite on the rear side of the electrical and vacuum connectors.

Wiring assembly panel heater and air conditioner

Connector temperature control
Plug fan speed control

Install in reverse order.

Check of the vacuum lines of the control panel

Necessary for the operation of the climate control vacuum is applied to the control panel on the line connected to the intake manifold. In this line included a check valve.

PERFORMANCE ORDER

Turn off the engine, remove the vacuum line from the intake manifold control valve (note its orientation along the line), and with a hand vacuum pump to attach the valve to the reverse side of the engine of his depression by depth of 203 mm Hg. Art. The valve must "pass" vacuum.

With manual vacuum pump, check-sided control valve (arrow) in the vacuum line control panel, heater and air conditioner.

Create a vacuum with the control panel facing the side of the valve. Now the valve should be closed. If this condition is not satisfied, replace the check valve.
Install a check valve in the vacuum line (its correct direction) and connect the hose to the intake manifold.
When extracted from its seat panel and disconnect the vacuum harness (see. alternately create a vacuum depth of 203 mm Hg. Art. on each of the seven terminal fittings.

Create a vacuum depth of 203 mm Hg. Art. alternately on each of the seven unions vacuum harness connector.

If any of the circuits does not hold vacuum, inspect the line of the path for the source of "leaks" and make the necessary repairs.

Components of the vacuum circuit.

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Removal and installation of the unit heater fan

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Removing and installing heat exchanger heater