Kia Rio: Inspection

[Rotor]

1.	Check that there is continuity between the slip rings (C).

2.	Check that there is no continuity between the slip rings and the rotor (B) or rotor shaft (A).

3.	If the rotor fails either continuity check, replace the alternator.

[Stator]

1.	Check that there is continuity between each pair of leads (A).

2.	Check that there is no continuity between each lead and the coil core.

3.	If the coil fails either continuity check, replace the alternator.

Drive belt tension measurement and adjustment

Belt tension measurement

Measure the belt tension using a mechanical tension gauge or a sonic tension meter.

Tension

[Without OAD]

New belt: 882.6 ~ 980.7N (90 ~ 100kg, 198.4 ~ 220.5lb)

Used belt: 637.4 ~ 735.5N (65 ~ 75kg, 143.3 ~ 165.3lb)

[With OAD]

New belt: 686.5 ~ 784.5N (70 ~ 80kg, 154.3 ~ 176.4lb)

Used belt: 490.3 ~ 588.4N (50 ~ 60kg, 110.2 ~ 132.3lb)

•	If the engine has run for 5 minutes or more, the belt tension must be adjusted as a used belt.

•	When installing the V-ribbed belt, all grooves on the pulley should be covered with belt ribs.

•	A loose belt causes slip noise.

•	Too tight belt cause bearing of alternator and water pump to damage.

Using a mechanical tension gauge (BT-33-73F, BTG-2 type)

1.	While pressing the handle (A) of the gauge, insert the belt (B) between pulley and pulley (or idler) into the gap between spindle (C) and hook (D).

2.	After releasing the handle (A), read a value on the dial pointed by the indicator (B).

Using a sonic tension meter (U-505/507 type)

Input the belt specifications into the tension meter.

Belt type	Location of measurement	Input data
Belt type	Location of measurement	M (Mass, g/m.rib)	W (Width, rib)	S (Span, mm)
With A/C	Crankshaft pulley to A/C compressor pulley	013.4	006.0	178.9
Without A/C	Idler to alternator pulley	013.4	006.0	Actual measurement value

Measurement of S (Span) : Caculate average value after measuring the distance 3~4 times.

D : Idler

d : Alternator pulley

2.	Locate the micro phone (B) close to the center of belt span (A) and bounce the belt by finger 2~3 times. Read a value on the display. [With A/C] [Without A/C]