Service Adjustment Procedure: Bleeding

Whenever the clutch tube, the clutch hose, and/or the clutch master cylinder have been removed, or if the clutch pedal is spongy, bleed the system.

Specified fluid:  SAE J1703 (DOT 3 or DOT 4)

[M5CF] 

1. Loosen the bleeder screw (A) at the clutch release cylinder.
   Fig 1: Identifying Bleeder Screw

   Courtesy of KIA MOTORS AMERICA, INC.
2. Depress the clutch pedal slowly until all air is expelled.
3. Hold the clutch pedal down until the bleeder is retightened.
4. Refill the clutch master cylinder with the specified fluid.
   CAUTION: The rapidly-repeated operation of the clutch pedal in B-C range may disrupt the release cylinder's position. During the bleeding operation, press the clutch pedal to the floor after it returns to the "A" point.
   Fig 2: Identifying Clutch Pedal Positions

   Courtesy of KIA MOTORS AMERICA, INC.

[M6GF2] 

Concentric slave cylinder air bleeding procedure

1. After disconnecting the cap from the concentric slave cylinder air bleeder, insert a vinyl hose in the plug.
2. Loosening the plug screw, press and release the clutch pedal about 10 times.
   NOTE: Hold the air bleeder body with a spanner (A) to prevent it from rotating when loosening or tightening the plug.
3. Tighten the plug during the clutch pedal pressed. Afterwards, raise the pedal with a hand.

   Tightening torque: 

   25~29Nm (2.5~2.9Kgf.m, 18~21lb-ft)

4. After pressing the clutch pedal 3 times more, loosen the plug and retighten it with the pedal pressed. Raise it again, then:
5. Repeat the step  4 two or three times. (until there is no bubble in the fluid)
   Fig 3: Holding Air Bleeder Body With Spanner To Prevent Rotation When Loosening/Tightening Plug

   Courtesy of KIA MOTORS AMERICA, INC.
   CAUTION:

   1. Do not clamp the pipe of a concentric slave cylinder.
   2. Be careful not to damage O-rings.