Andrew Burrows Rocker arms / Adjustment 13/02/16
Rocker arms, adjustment
Remove the blanking plug.
Position the marks on the camshaft which indicate the number of the cylinder to adjust between the marks on the camshaft front bearing cap. Use tool A.
A = 1380
Engine rotation: anti-clockwise, from the engine flywheel end. Camshaft marks
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Andrew Burrows Rocker arms / Adjustment 13/02/16 |
Without "Optibrake" / "Optibrake +"
The marks (B) 1 - 5 - 3 - 6 - 2 - 4 correspond to the recommended inlet valve clearances , to the recommended exhaust valve clearances and to the recommended pump injector pre-travel distances for each relative cylinder.
Mark (B) must be positioned in the centre of marks (A) when carrying out the adjustment. For values, see "Technical data" chapter.
See pages .
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Andrew Burrows Rocker arms / Adjustment 13/02/16 |
Engine equipped with "Optibrake"
The marks (B) 1 - 5 - 3 - 6 - 2 - 4 correspond to the recommended inlet valve clearances and to the recommended pump injector pre-travel distances for each relative cylinder.
The marks (C) V1 - V5 - V3 - V6 - V2 - V4 correspond to the recommended exhaust valve clearances for each relative cylinder. The marks (B) or (C) must be positioned between the marks (A) to make the correct adjustment.
For values, see "Technical data" chapter. See pages .
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Andrew Burrows Rocker arms / Adjustment 13/02/16 |
Engine equipped with "Optibrake +"
The marks (B) 1 - 5 - 3 - 6 - 2 - 4 correspond to the recommended inlet valve clearances and to the recommended pump injector pre-travel distances for each relative cylinder.
The marks (C) E1 - E5 - E3 - E6 - E2 - E4 correspond to the recommended exhaust valve clearances for each relative cylinder. The marks (B) or (C) must be positioned between the marks (A) to make the correct adjustment.
For values, see "Technical data" chapter. See pages .
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Andrew Burrows Rocker arms / Adjustment 13/02/16
Adjustment of inlet valves
Measure the valve clearances using feeler gauges. See pages .
Loosen the locknut and the adjuster.
Adjust the clearance between the rocker arm and the valve yoke by means of screw. Tighten the locknut to torque while holding the adjuster.
See pages .
Make a mark on the rocker arm when adjustment is finished.
Perform the same operation on all the other cylinders.
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Andrew Burrows Rocker arms / Adjustment 13/02/16
Adjustment of unit pump injectors pre-travel
Check the torque of the injector flange attachment bolts without removing the rocker arm assembly. Use tool A.
A = 0162 Tighten to torque. See pages .
This operation is to be performed at each valve adjustment maintenance.
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Andrew Burrows Rocker arms / Adjustment 13/02/16
Loosen the locknut and the adjuster.
Screw up the adjuster by hand until contact is made with the pump injector. Tighten the adjuster through 2/3 of a turn to obtain a unit pump injector preload. Tighten the locknut to torque while holding the adjuster.
See pages .
Make a mark on the rocker arm when adjustment is finished.
Perform the same operation on all the other cylinders.
Exhaust valve adjustment
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Andrew Burrows Rocker arms / Adjustment 13/02/16
Without "Optibrake" / "Optibrake +"
Measure the valve clearances using feeler gauges. See pages .
Loosen the locknut and the adjuster.
Adjust the clearance between the rocker arm and the valve yoke by means of screw. Tighten the locknut to torque while holding the adjuster.
See pages .
Make a mark on the rocker arm when adjustment is finished.
Perform the same operation on all the other cylinders.
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