Hino S5-LJ05E04A, Руководство по ремонту

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ENGINE MECHANICAL (J05E) 10–12
ADJUSTING THE VALVE CLEARANCE
1. CAUTIONS
! CAUTION
• Before adjustment, make sure that the tightening bolts of the
rocker arm support, nozzle clamp, cylinder head, and cam-
shaft bearing cap are tightened with the specified torque.
• Make sure that there is no dirt in the crosshead and valve
stem head.
2. VALVE CLEARANCE ADJUSTMENT
(1) Turn the crankshaft forward to align the cylinder for adjustment
with the compression stroke top dead center.
! CAUTION
Check that the rocker arm to be adjusted is not lifted to the cam of
the camshaft.
NOTICE
If the No.1 cylinder is at the compression stroke top dead center,
you can adjust the valve clearance with a mark on the table. If the
No.4 cylinder is at the compression stroke top dead center, the
cylinder with mark can be adjusted.
(2) Fully loosen the adjust screw and lock nut of the crosshead.
! CAUTION
Make the adjust screw projecting beyond the upper surface of the
crosshead by at least 10mm {0.394 in.}. Correct adjustment cannot
be made unless the adjust screw is completely separated from the
valve stem.
Cylinder number 1 2 3 4
Valve arrangement Intake Exhaust Intake Exhaust Intake Exhaust Intake Exhaust
No.1 cylinder at the
compression stroke
top dead center
   
No.4 cylinder at the
compression stroke
top dead center
Δ Δ Δ Δ
ADJUST SCREW OF THE
CROSSHEAD
10mm {0.394 in.}
OR MORE
GAP
LOCK NUT
CLOSE
CONTACT
SHTS021270900022