Toyota 1HZ Repair Manual

FUEL SYSTEM - Injection Pump FU-75
2. PRESET FULL LOAD INJECTION VOLUME
(a) Set the adjusting lever to maximum position.
(b) (1PZ (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, 127 kPa) of pressure to
the boost compensator.
(e) (1HD-T (w/ PCS))
Apply vacuum to the PCS actuator.
(f) Measure the injection volume.
(g) Remove the collar seal as follows:
• Hold the full load set screw, and release the collar
seal from the spot weld by turning the lock nut
counterclockwise by 90° or more.
• Using a screwdriver, remove the collar seal.
(h) (w/ Wire Seal Type)
Cut off the wire seal.
(i) Adjust by turning the full load set screw.
HINT: The injection volume will increase about 3 cc (0.18
cu in.) with each 1/2 turn of the 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)