Toyota 1HZ Repair Manual

FU-76 FUEL SYSTEM Injection Pump
3. (w/o HIGH ALTITUDE)
PRE-SETTING OF LOAD SENSING TIMER
Using a 5 mm hexagon wrench, adjust the protrusion of the
governor shaft.
Protrusion: 0.5-2.0 mm (0.020-0.079 in.)
4. PRESET MAXIMUM SPEED
(a) Set the adjusting lever to maximum position.
(b) (1 PZ (w/ HAC) and 1 HZ (w/ HAC))
Apply 760 ± 1.5 mmHg (29.92 ± 0.06 in.Hg, 101.3 ±
0.2 kPa) absolute pressure.
(c) (1HD-T (w/o BACS))
Apply 0.81 kg/cm
2
(11.5 psi, 79 kPa) of pressure to
the boost compensator.
(d) (1HD-T (w/ BACS))
Apply 1.29 kg/cm
2
(18.3 psi, 1 27 kPa) of pressure to
the boost compensator.
(e) (1HD-T (w/ PCS))
Apply vacuum to the PCS actuator.
(f) Measure the injection volume.
5. ADJUST PUMP INNER PRESSURE
(a) Measure the pump inner pressure at the below listed
rpm.
(g) Cut off the seal wire.
(h) Adjust the injection volume with the maximum speed
adjusting screw.

Toyota 1HZ Specifications

General

Fuel Type	Diesel
Maximum Power	96 kW (129 hp) at 3800 rpm
Firing Order	1-5-3-6-2-4
Aspiration	Naturally aspirated
Fuel System	Direct injection
Cooling System	Water-cooled
Displacement	4.2 L (4164 cc)
Maximum Torque	285 N·m (210 lb·ft) at 2200 rpm
Valvetrain	SOHC, 12 valves (2 per cylinder)