FU-78 FUEL SYSTEM Injection Pump
(b) Measure the timer piston stroke at the below listed
rpms.
HINT: Check that the hysteresis is within 0.3 mm (0.012
in.)
(c) Using a 5 mm hexagon wrench, adjust by the timer
adjusting screw.
HI NT: The stroke will decrease with turn to clockwise and
increase with turn to counterclockwise.
9. (1HD-T)
CHECK AIR TIGHTNESS OF BOOST COMPENSATOR
(a) Apply 1.00 kg/cm
2
(14.2 psi, 98 kPa) of pressure to
the boost compensator.
(b) Measure the time it takes for the pressure to drop to
0.97 kg/cm
2
(13.8 psi, 95 kPa).
Pressure drop: 10 seconds or more
10. ADJUST FULL LOAD INJECTION VOLUME
(a) The adjusting lever angle for the adjustment below
should be as shown in the illustration.
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