Water Pump
The crankshaft rotates the water pump/cooling fan assembly in a counterclockwise direction, using the flat side of the drive belt (see Figure 5-5). The water pump assembly mounts on the engine front cover, and mounting studs on the water pump for the cooling fan assembly secure the driven pulley.
Power Steering Pump
The crankshaft rotates the shaft of the power steering pump in a clockwise direction, using the poly-V side of the drive belt. The power steering pump mounts on the lower part of the left cylinder head accessory support and has a brace that connects to both the cylinder case and front cover (see Figure 5-6).
The power steering pump uses a pulley that is pressed on its shaft. During replacement, a special tool is required to remove and install the pulley.
Generator
The crankshaft rotates the rotor of the generator in a clockwise direction, using the poly-V side of the drive belt.
The generator mounts on the upper part of the left cylinder head accessory support (see Figure 5-7). It has a rear brace that connects to the left cylinder head and an upper brace that connects to the front cover.
The generator uses a pulley that is secured by a large nut threaded on the front of the rotor. Disassembly of the generator is not required for the replacement of the pulley.
A/C Compressor
The crankshaft rotates the shaft of the A/C compressor in a clockwise direction, using the poly-V side of the drive belt. The A/C compressor mounts on a support bolted to the right cylinder head (see Figure 5-8). It has a front bracket that connects to the engine front cover.
The A/C compressor uses a pulley/bearing assembly that mounts on the compressor housing with a snap ring and press fit. Replacement of the pulley/bearing assembly requires special tools and the removal of the compressor shaft drive plate.
Vacuum Pump
When the vehicle is not equipped with A/C, the crankshaft rotates the shaft of a vacuum pump or idler pulley assembly in a clockwise direction, using the poly-V side of the drive belt. In this application, either a vacuum pump or idler pulley assembly mounts on a bracket bolted to the right cylinder head and front cover (refer to Figure 5-9).
When the vehicle has A/C, the crankshaft rotates the shaft of a vacuum pump in a counterclockwise direction, using the flat side of the drive belt. In this application, a vacuum pump mounts on the front bracket supporting the A/C compressor, which is bolted to the engine front cover (refer to Figure 5-10). Some vehicle applications may delete the use of a vacuum pump.
Like the power steering pump, the vacuum pump uses a pulley that is pressed on its shaft. During replacement, a special tool is required to remove and install the pulley.
