Min Cold

Every 9000 miles or 6 months 1.11

5 If the condition of the belt is satisfactory, check the drivebelt tension as described below under the relevant sub-heading.

Alternator drivebelt (4A-FE and 7A-FE engines) -removal, refitting and tensioning

Removal

6 If not already done, proceed as described in paragraph 3.

7 Disconnect the battery negative (earth) lead (refer to Chapter 5A, Sections 1 and 3).

8 Slacken the alternator upper pivot bolt, then slacken the alternator lower adjusting lock bolt.

9 Back off the adjuster bolt (on the lower link bracket) to relieve the tension in the drivebelt, then slip the drivebelt from the pulleys.

Refitting

10 Fit the belt around the pulleys, ensuring that the belt is of the correct type if it is being renewed and is correctly engaged with the ribs on the pulley. Take up the slack in the belt by tightening the adjuster bolt. Tension the drivebelt as described in the following paragraphs.

Tensioning

11 If not already done, proceed as described in paragraph 3.

12 Correct tensioning of the drivebelt will ensure that it has a long life. Beware, however, of overtightening, as this can cause wear in the alternator or water pump bearings.

13 The belt tension is checked at the midpoint between the alternator and water pump pulleys on the upper belt run. Apply finger or thumb pressure by pressing down on the drivebelt, and check that it deflects by the amount given in the Specifications (see illustration).

14 To adjust, with the upper pivot bolt and lower adjusting lock bolt loose, turn the adjuster bolt until the correct tension is achieved. Rotate the crankshaft a couple of times, recheck the tension, then securely tighten both the alternator mounting pivot and adjusting lock bolts.

15 Refit the washer fluid reservoir, and where removed refit the right-hand roadwheel and lower the vehicle to the ground.

4afe Alternator Drive Belt
7.13 Checking the tension of the alternator drivebelt (4A-FE and 7A-FE engines)

Alternator/air conditioning compressor drivebelt (3S-FE and 3S-GE engines) • removal, refitting and tensioning

Removal

16 If not already done, proceed as described in paragraph 3.

17 Disconnect the battery negative (earth) lead (refer to Chapter 5A, Sections 1 and 3).

18 On 3S-FE engines (with or without air conditioning), slacken the alternator upper pivot bolt, then slacken the alternator lower adjusting lock bolt. Back off the adjuster bolt (on the alternator bracket) to relieve the tension in the drivebelt, then slip the drivebelt from the pulleys.

19 On 3S-GE engines (with or without air conditioning), loosen the idler pulley lock bolt then back off the adjuster bolt (on the idler pulley bracket) to relieve the tension in the drivebelt, and slip the drivebelt from the pulleys. Note that on models without air conditioning, the idler pulley is ribbed to take the inner surface of the drivebelt, however on models with air conditioning the idler pulley is smooth to take the outer surface of the drivebelt.

Refitting

20 Fit the belt around the pulleys, ensuring that the belt is of the correct type if it is being renewed, and is correctly engaged with the ribs on the pulley. Take up the slack in the belt by tightening the adjuster bolt. Tension the drivebelt as described in the following paragraphs.

Tensioning

21 If not already done, proceed as described In paragraph 3.

22 Correct tensioning of the drivebelt will ensure that it has a long life. Beware, however, of overtightening, as this can cause wear in the alternator/compressor bearings.

23 The belt tension is checked at the midpoint between the alternator and crankshaft pulleys (except 3S-FE engines) or between the alternator and air conditioning compressor (3S-FE engines). Apply finger or thumb pressure by pressing on the drivebelt, and check that it deflects by the amount given in the Specifications.

24 To adjust, with the alternator or idler bolts loose, turn the adjuster bolt until the correct tension is achieved. Rotate the crankshaft a couple of times, recheck the tension, then securely tighten the alternator or idler bolts.

25 Refit the washer fluid reservoir, and where removed refit the right-hand roadwheel and lower the vehicle to the ground.

Air conditioning compressor drivebelt (4A-FE and 7A-FE engines)

26 If not already done, proceed as described in paragraph 3.

27 Remove the alternator drivebelt as described earlier In this Section.

28 Loosen the idler pulley bolt then back off the adjuster bolt (on the idler pulley bracket) to relieve the tension in the drivebelt, and slip the drivebelt from the pulleys.

Refitting

29 Fit the belt around the pulleys, ensuring that the belt is of the correct type if it is being renewed, and is correctly engaged with the ribs on the pulley. Take up the slack in the belt by tightening the adjuster bolt. Tension the drivebelt as described In the following paragraphs.

Tensioning

30 If not already done, proceed as described in paragraph 3.

31 Correct tensioning of the drivebelt will ensure that it has a long life. Beware, however, of overtightening, as this can cause wear in the compressor bearings.

32 The belt tension is checked at the midpoint between the compressor and crankshaft pulleys on the lower belt run. Apply finger or thumb pressure by pressing on the drivebelt, and check that it deflects by the amount given in the Specifications.

33 To adjust, with the idler pulley bolt loose, turn the adjuster bolt until the correct tension is achieved. Rotate the crankshaft a couple of times, recheck the tension, then securely tighten the idler pulley bolt.

34 Refit the washer fluid reservoir, and where removed refit the right-hand roadwheel and lower the vehicle to the ground.

Power steering pump drivebelt

35 If not already done, proceed as described in paragraph 3.

36 Disconnect the battery negative (earth) lead (see Chapter 5A, Sections 1 and 3). On 4A-FE and 3S-GE engines, remove the alternator drivebelt as described earlier in this Section.

37 Loosen the power steering pump pivot and adjuster lock bolts, then swivel the pump towards the engine and slip the drivebelt from the pulleys.

Refitting

38 Fit the belt around the pulleys, ensuring that the belt is of the correct type if it is being renewed, and is correctly engaged with the ribs on the pulley. Take up the slack in the belt by swivelling the pump away from the engine. Tension the drivebelt as described in the following paragraphs.

Tensioning

39 If not already done, proceed as described in paragraph 3.

40 Correct tensioning of the drivebelt will ensure that it has a long life. Beware, however, of overtightening, as this can cause wear in the power steering pump bearings.

41 The belt tension is checked at the mid-point between the pulleys on the upper belt run. Apply finger or thumb pressure by pressing on the drivebelt, and check that it deflects by the amount given in the Specifications.

1.12 Every 9000 miles or 6 months

42 To adjust, with the pump pivot bolt loose, swivel the pump away from the engine until the correct tension is achieved then tighten the adjuster lock bolt. Rotate the crankshaft a couple of times, then recheck the tension.

43 Refit the washer fluid reservoir, and where removed refit the right-hand roadwheel and lower the vehicle to the ground.

Mixture

8 Run the engine to normal operating temperature, then race the engine at 2500 rpm for approximately 180 seconds.

9 Allow the engine to idle, then connect the exhaust gas analyser probe in the exhaust tailpipe. Check that the CO content is within the limits given in the Specifications.

10 Stop the engine and remove the exhaust gas analyser.

Spark plug and ignition system check

Note: A tachometer will be required to check the idle speed, and an exhaust gas analyser will be required to check the mixture.

1 The following procedure is for checking the idle speed and mixture only. No adjustment is possible, and if the settings are incorrect, a diagnostic check should be carried out on the EFI system (see Chapter 4A and 4B).

2 Before checking the idle speed and mixture setting, always check first the following.

a) Check that the ignition timing is accurate (Chapter 5B).

b) Check that the spark plugs are in good condition and correctly gapped (Sections 9 and 31 of this chapter).

c) Check that the accelerator cable is correctly adjusted (Section 4A).

d) Check that the crankcase breather hoses are secure, with no leaks or kinks (Chapter 4B).

e) Check that the air cleaner filter element is clean and all air ducts correctly fitted (Section 11).

f) Check that the exhaust system is in good condition (Section 18).

g) If the engine is running very roughly, check the compression pressures as described in Chapter 2A.

3 Turn off all electrical components including the air conditioning system (where fitted). On models fitted with power steering keep the front wheels pointing straight ahead during the checking and adjustment procedure. The check must be made with the cooling fan stopped and the transmission in neutral.

Idle speed

4 Connect a tachometer to the engine in accordance with the manufacturer's instructions.

Caution: Consult a dealer service department before connecting the tachometer - some tachometers may be incompatible with the types of ignition systems used on these vehicles.

5 Run the engine to normal operating temperature, then race the engine at 2500 rpm for approximately 90 seconds.

6 Check that the idle speed is within the limits given in the Specifications.

7 Stop the engine and disconnect the tachometer.

A Warning: Voltages produced by an electronic ignition system are considerably higher than those produced by conventional ignition systems. Extreme care must be taken when working on the system with the ignition switched on. Persons with surgically-implanted cardiac pacemaker devices should keep well clear of the ignition circuits, components and test equipment.

Spark plug check

Note: Standard spark plugs should be renewed at 18 000 miles, and platinum-tipped spark plugs should be renewed at 63 000 miles (see Section 31). The condition of the spark plugs over a period of time will reflect the general state of the engine; the following check will show up any problems with the engine which may require attention.

1 Remove the spark plugs and check their condition with reference to Section 31.

2 Check each spark plug for excessive wear of the electrodes, and for damage to threads and insulators. If evident, refer to Section 31 for possible reasons.

3 Although Toyota recommend cleaning the spark plugs, certain spark plug manufacturers say this can cause damage to the insulator, especially if a wire brush is used. If there is no major build-up of carbon on the tip of the spark plug, do not clean it as it should be serviceable until it is due for renewal.

4 Check the spark plug electrode gaps and adjust them if necessary, then refit them as described in Section 31.

General component check

5 The spark plug (HT) leads should be checked whenever the spark plugs are removed.

6 Pull the leads from the plugs by gripping the end fitting, not the lead, otherwise the lead connection may be fractured.

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Simple Car Care Tips and Advice

Simple Car Care Tips and Advice

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    How do i connect alternator in toyota carina e?
    4 years ago

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