Volkswagen Golf/Jetta 2 manual

Alternator, power steering pump and air conditioner compressor drivebelt(s) check (Every 10 000 miles (15 000 km) or 12 months)
Routine maintenance and servicing / Alternator, power steering pump and air conditioner compressor drivebelt(s) check (Every 10 000 miles (15 000 km) or 12 months)


1 Check all drivebelts along their full length for cracks, splitting, fraying or damage. Check also for signs of glazing (shiny patches) and for separation of the belt plies. Renew the belt if worn or damaged.

Alternator
Pre 1985
2 Depress the alternator drivebelt firmly with a finger midway between the alternator and crankshaft pulleys (see illustration). The belt should deflect approximately 5.0 mm.

13.2 Checking alternator drivebelt tension
13.2 Checking alternator drivebelt tension

3 If a new drivebelt has been fitted, then initial adjustment should give a deflection of 2.0 mm.

After a suitable running in period of about 500 miles (750 km), belt adjustment should be rechecked and adjusted to deflect 5.0 mm.

4 To adjust the drivebelt, loosen the nut on the adjusting link and pivot bolt (see illustrations), then lever the alternator away from the cylinder block by using a lever at the pulley end of the alternator, until the belt is tensioned correctly.

13.4a Alternator drivebelt tensioner link - 1.3 litre
13.4a Alternator drivebelt tensioner link - 1.3 litre

13.4b Alternator drivebelt tensioner link - 1.8 litre
13.4b Alternator drivebelt tensioner link - 1.8 litre

5 Tighten the nut and bolt on completion of drivebelt adjustment.

From 1985
6 From early 1985, some models are fitted with a rack type alternator adjustment link (see illustration). To adjust drivebelt tension, first fully loosen the adjustment locknut and bolt, the link pivot bolt and the alternator pivot bolt, so that the alternator falls to one side under its own weight.

13.6 Rack type alternator drivebelt tensioner link (A) locknut (B) and
13.6 Rack type alternator drivebelt tensioner link (A) locknut (B) and adjustment bolt (C)

7 Using a socket and torque wrench on the adjustment bolt, apply a torque of 8 to 10 Nm (6 to 7 Ibf ft), then secure the adjustment bolt in the set position by tightening its locknut to 35 Nm (26 Ibf ft).

8 If the special VW tool is being used, then the adjustment bolt can now be tightened. If not, tighten the pivot bolt then remove the socket and immediately tighten the adjustment bolt, making sure that the alternator does not move.

9 Tighten the link pivot bolt and alternator pivot bolt.

Power steering pump
10 Loosen the power steering pump unit retaining nuts and bolts and the adjuster bolt locknut on the pump bracket.

11 Turn the tensioning bolt until the belt can be depressed approximately 10.0 mm under firm finger pressure midway between the crankshaft and pump pulleys.

12 When tension is correct, tighten the adjusting bolt locknut and the pump retaining nuts and bolts.

Air conditioner compressor 13 Drivebelt tension is adjusted by adding or subtracting shims from between the halves of the compressor pulley.

14 When correctly adjusted, the belt should give a deflection of 5 to 10 mm on its longest run.


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