Toyota 1HZ Repair Manual

A-13
SERVICE SPECIFICATIONS Fuel System
Injection Pump Adjustment
Preparations of
pump tester
Test nozzle type
Test nozzle opening pressure
Injection pipe
Outer diameter
Inner diameter
Length
Minimum bending radius
Fuel temperature
Fuel feeding pressure
DN12SD12
145-155 kg/cm
2
(2,062 - 2,205 psi, 1 4,220 - 1 5,200 kPa)
6.0 mm 0.236 in.
2.0 mm 0.079 in.
840 mm 33.07 in.
25 mm (0.98 in.) or more
40-45°C
0.2 kg/cm
2
(2.8 psi, 20 kPa)
Full load
injection volume
pre-setting
Item
Adjusting
lever position
Pump rpm
No. of
measuring
strokes
Injection volume
cc (cu in.)
11.78-12.18 (0.72-0.74)200
1,200
Maximum
speed side
1PZ
1HZ
1HD-T
(w/o BACS)
1HD-T (w/ BACS)
Maximum
speed side
Maximum
speed side
Maximum
speed side
1,200
200
1,800 200
1,800 200
Maximum speed
pre-setting Item
Adjusting
lever position
Pump rpm
No. of
measuring
strokes
11.80-12.20 (0.72-0.74)
13.58-14.18 (0.83-0.87)
13.14-13.74 (0.80-0.84)
Injection volume
cc (cu in.)
4.0-6.0 (0.24-0.37)
3.0-5.0 (0.18-0.31)
3.0-5.0 (0.18-0.31)
200
200
200
2,300
2,300
2,200
Maximum
speed side
Maximum
speed side
Maximum
speed side
1PZ
1HZ
1HD-T
Pump inner
pressure
Item
1PZ
1HZ
1HD-T
(w/o BACS)
1HD-T (w/ BACS)
Pump rpm
500
2,000
500
2,000
400
1,900
2,200
400
2,200
Inner pressure kg/cm
2
(psi, kPa)
2.45 - 3.05 (35 - 43, 240 - 299)
6.4-7.0 (91 -100, 628-686)
2.5 -3.1 (36-44, 245-304)
7.1 -7.7 (101-110, 696-755)
2.2-3.1 (31 -44, 216-304)
8.1 -8.4 (115-119, 794-824)
9.0 (128, 883) or less
2.7-3.6 (38-51, 265-353)
8.7-9.0 (124-128, 853-883)

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)