Skoda Workshop Service and Repair Manuals

Repair magnetic coupling -N25- (manual control and climatronic)   Note t  Remove the compressor from the bracket for repairing the magnetic coupling (do not open the refrigerant circuit). t  Remove and install V-ribbed belt → Engine, Mechanics; Rep. Gr.13 t  Mark the direction of rotation before removing the V-ribbed belt. Special tools and workshop equipment required t  Counterholder -MP 9-601 - t  Flywheel type belt pulley fitting tool -MP 9-400-

1 -

Nut

t	self-locking, replace

t	Tightening torque: 15 Nm

t	Screwing off and on → Fig.

2 -	Clutch disc

t	remove → Fig.

3 -

Spacers

t	to set the gap between the clutch disk and belt pulley

t	Clearance: 0.4 up to 0.8 mm

t	Testing and adjusting gap → Fig.

4 -

Circlip

t

replace

t	Fit on correct side (the smooth side points to the compressor).

t	pay attention to correct fit in slot

5 -	Belt pulley

t	with pressed-in bearing

t	do not replace bearing

t	remove → Fig.

t	installing → Fig.

t	clean sealing surface before installing

6 -

Circlip

t

replace

t	Fit on correct side (the smooth side points to the compressor).

t	pay attention to correct fit in slot

7 -	Solenoid coil

t	installing → Fig.

t	An overheating fuse is built into the solenoid coil. The overheating fuse will cut out the solenoid coil as soon as (e.g. because of compressor resistance) the magnetic coupling starts overheating (approx. 180°C)

t	The solenoid coil also includes a protective diode (reduces voltage peaks that may occur when disconnecting the magnetic coupling).

8 -	Bracket with screw

9 -

Support

10 -

Support

11 -

Screw

12 -	Compressor

13 -	Slide bush

t	with thread

Screwing hexagon nut off and on Tightening torque 15 Nm.   Note t  self-locking, replace t  -MP 9-601- use with 6 mm pin diameter

Remove clutch disk   Note Carefully lever off a tightly fitted clutch disc with two screwdrivers -A-.

Pull off belt pulley –  Insert two-arm extractor -A- at the shoulder -B- and pull off belt pulley.   Note t  Pay attention to the correct position of the extractor at the shoulder -B- so that the belt pulley is not damaged when removing. t  Clean contact surface before installing.

Install solenoid coil –  Position naps -C- in the recess of the solenoid coil -A-. –  Pay attention the correct position of the wiring -B- to the solenoid coil -A-.

Install belt pulley –  Position belt pulley flat and install with -MP 9-400-.   Note Screw the screw of -MP 9-400- only by hand onto the compressor shaft.

Testing and adjusting gap –  Measure the dimention “1” between the belt pulley and the clutch disk (-B- and -C-) with depth gauge -A- (at 3 points). –  Apply a voltage of 12 V to the 2-pin plug -D- (pay attention to the correct polarity of the voltage). –  Measure the dimention “2” between the belt pulley and the clutch disk (-B- and -C-) with depth gauge -A- (at 3 points). –  Gap (difference between dimension “1” and “2”): 0.4 up to 0.8 mm.   Note t  The gap must be within the tolerance over the entire circumference. t  The gap can also be measured with the compressor fitted. t  If the gap is outside the allowed range, remove the clutch disk and adjust the gap by removing or inserting spacers.