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Engine lubrication > < Removing and installing rocker arms

Fabia Mk1

Checking hydraulic balancing elements
Checking hydraulic balancing elements
Special tools and workshop equipment required
t  Feeler gauges
t  Wooden or plastic wedge
  Note
t  Always replace hydraulic balancing element complete (cannot be adjusted or repaired).
t  Irregular valve noises when starting engine are normal.
Test sequence
–  Start engine and allow to run at idling speed until the radiator fan has cut in at least once.
–  Increase engine speed to about 2500 rpm for 2 minutes.
If the hydraulic balancing elements are still loud, determine which is the faulty balancing element as follows:
–  Remove cylinder head cover.
–  Rotate crankshaft until the valves of cylinder 4 overlap (inlet valve opens and exhaust valve closes).
   
–  Apply a load to the hydraulic balancing element by pressing slightly several times on the adjusting screw with a wooden or plastic wedge.
–  Attempt to insert a 0.2 mm feeler gauge -arrow- between rocker arm and valve.
If it is possible to insert a feeler gauge between rocker arm and valve and the balancing element at the same time moves down:
–  Replace faulty balancing element.
If a clearance of only 0.2 mm was measured between the rocker arm and the valve and the balancing element does not move down:
–  Perform basic setting of hydraulic valve clearance compensation → Chapter and after the setting, repeat the inspection of the balancing element.
–  Inspect balancing elements at the other cylinders by carrying out the same procedure.
  S15-0189
InspectionValve overlap
1. CylinderCylinder 4
3. CylinderCylinder 2
4. CylinderCylinder 1
2. CylinderCylinder 3

  Note
After installing new hydraulic balancing elements, the engine must not be started for about 30 minutes. Hydraulic compensation elements must settle (otherwise valves may remain constantly open and strike the piston).
   

Engine lubrication > < Removing and installing rocker arms