Perkins 4006-23TAG1A User Handbook Manual page 38

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3
JBC
2
C
3 Check that there is clearance on both valves.
4 Loosen the lock nuts on each of the bridge pieces (C2).
Note: Each rocker set has two bridge pieces, both must be adjusted.
5 Turn the adjuster (C3) out until the fixed side of the bridge piece rests on its valve.
6 Hold the top edge of the bridge piece (C1) and turn the adjuster screw (C3) down until it contacts the valve.
Caution: When the contact is made with the valve, the valve must not move. Only the gap between the valve
tip and the bridge piece must be removed.
7 Tighten the lock nut (C2) to a torque of 50 Nm (35 lbf ft) 5,1 kgf m. Do not allow the adjuster screw (C3) to
move.
Note: The valve clearance can now be set.
How to adjust the valve clearance
Note: The inlet and exhaust valve clearance is 0,4 mm (0.016 in)
1 Check the valve clearance.
2 To set the valve clearance, loosen the lock nut (D1).
3 Put the feeler gauge (D2) between the rocker and bridge piece.
4 Turn the adjuster (D3) up or down to make the feeler gauge a slide fit.
5 Tighten the lock nut (D1) to a torque of 50 Nm (35 lbf ft) 5 kgf m. Do not allow the adjuster screw (D3) to
move.
3
D
6 Check that the valve clearance is correct. Fit a new rocker cover joint (E3) and fit the rocker cover (E2).
7 Fit the setscrews (E1) and torque to 4 Nm (2.9 lbf ft) 0,4 kgf m.
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D1056/1
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E
D1057/1
User's Handbook, TPD 1508E, issue 1
4000 Series
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2
3
D1053/1