Cooling, heating and ventilation of the car Volkswagen LT 28/35

Cooling, Heating and Ventilation System Specifications
For information on modifications and latest models, see. in the Appendix at the end of this Guide. Specifications System type Sealed, with expansion tank, belt-driven water pump...

Description and maintenance
The cooling system is sealed and includes a radiator and a water pump driven by a V-belt from the crankshaft pulley. The cooling fan impeller is bolted to the front flange of the...

Cooling system — replacing coolant and flushing the system
1. Before draining the coolant, allow the engine to cool down. (If the engine is hot, you may get burned when removing the expansion tank cap). 2. Set the heater control to the...

A mixture of antifreeze and water
1. In countries with cold climates, it is recommended to use a mixture of antifreeze and water in the system. Every fall, the coolant should be drained, the system flushed, and...

Thermostat — removal, checking, and installation
1. A faulty thermostat can cause the engine to overheat or significantly lengthen its warm-up period. It also affects the operation of the heater. 2. Drain the coolant through the...

Radiator — removal, repair and installation
1. Drain the coolant ( see section 2 ). 2. Working under the car, unscrew the bolts and remove the protective shield above the radiator. 3. Disconnect the lower hose from the...

Drive belt — tensioning, removal and installation
1. The tension of the water pump and generator drive belt should be checked periodically. When pressing the belt with your thumb at the midpoint of its longest run, the belt...

Coolant Temperature Gauge and Sensor — general information
1. The coolant temperature sensor is screwed into the elbow of the cooling system, bolted to the rear surface of the cylinder head (see photo). Photo 7.1. Coolant temperature...

Water pump — removal and installation
1. Drain the coolant ( see section 2 ). 2. Remove the drive belt ( see section 6 ). 3. Remove the radiator ( see section 5 ). 4. Disconnect the expansion tank hoses from the...

Heater — description
1. The heater is located immediately under the windshield, in the driver's cabin. 2. The heater is a combined unit that provides both hot air (heated by the coolant), and fresh...

Heater — removal and installation
Control panel and cables Figure 2.6. Heater parts: 1 - Heater control lever; 2 - Heater control panel; 3 - Ventilation grille for air outlet; 4 - Ventilation grille for air...

Cooling system — troubleshooting
Symptom Reason(s) The engine gets very hot Lack of coolant in the system The drive belt is slipping (accompanied by a "squealing" sound when the engine speed increases sharply)...

Cooling System Specifications — 2.4l engine models
Cooling system - models with 2.4L engine General information System type Sealed, with expansion tank. The water pump is driven by the camshaft drive belt. The cooling fan is...

Draining the coolant, flushing the system and adding coolant (models with a 2.4L engine)
1. Follow the procedure given in chapter 2 , taking into account the following features. 2. The drain plug is located at the bottom of the radiator inlet pipe (see photo). Photo...

Thermostat — removal, inspection, and installation (2.4l engine models)
8. Drain some of the coolant so that its level drops below the thermostat housing. 9. Disconnect the large inlet hose from the thermostat housing (see photo). Photo 5.9. Locations...

Radiator — removal, repair and installation (models with a 2.4l engine)
15. Drain the fluid from the cooling system. 16. Remove the lower air deflector shield (see photo). Photo 5.16. Air deflector mounting bolts (shown by arrows). 17. Disconnect the...

Water Pump — removal and installation (2.4l engine models)
Note: The water pump can be removed from the engine while it is in the vehicle, but the fan and shroud, alternator drive belt, and power steering pump belt must be removed first...

Coolant Temperature Sensor (2.4L Engine Models)
35 The coolant temperature sensor is screwed into the rear surface of the cylinder block, immediately above the outlet elbow of the cooling system (see photo). Photo 5.35. Coolant...

Heater and its control panel (latest models)
37. The heater design on the latest models differs from the earlier models in the following features. 38. The heater control panel is organized differently (the handles are...

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Caddy 3 Beetle LT 28/35