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Summary of Contents for Isuzu FORWARD
- Page 1 Description Suspension = '09 - '14 Model All models WORKSHOP MANUAL Functional Inspection...
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Page 2: Table Of Contents
Functional Inspection (All models) 16C-1 Description Suspension Functional Inspection (All models) Table of Contents Diagnostic system check-air suspension controls..16C-2 Air suspension warning light illuminating circuit system check................16C-3 Lost communication with the air suspension control unit ..................16C-4 Tire wear inspection............16C-5 Tire air pressure inspection.........16C-10 Air suspension vehicle height initial adjustment..16C-12 Disc wheel inspection..........16C-22 Rear air suspension inspection (FVR PRIMAAX)..16C-25... -
Page 3: Diagnostic System Check-Air Suspension Controls
16C-2 Functional Inspection (All models) Diagnostic system check-air suspension controls Diagnostic system check-air suspension controls Note： description of function ・ There should be no open circuit. The air suspension control system check is the starting Inspect a scan tool communication circuit. point for trouble diagnosis. -
Page 4: Air Suspension Warning Light Illuminating Circuit System Check
Functional Inspection (All models) 16C-3 Air suspension warning light illuminating circuit system check Air suspension warning light illuminating circuit Note： system check description of function ・ There should be no power supply short circuit. The air suspension warning light illuminates for 3 ・... -
Page 5: Lost Communication With The Air Suspension Control Unit
16C-4 Functional Inspection (All models) Lost communication with the air suspension control unit Lost communication with the air suspension control unit description of function The air suspension control unit communicates with the meter and ECM via CAN. The meter determines CAN communication errors when signals from the air suspension control unit are not input, and displays communication system failure in the multi-display. -
Page 6: Tire Rotation
Functional Inspection (All models) 16C-5 Tire wear inspection Tire wear inspection description of function 1. Heavy cornering wear, lack of air pressure, lack 3. Driving wheel abrupt acceleration, excessively of tire rotation high air pressure 2. Inaccurate wheel alignment, installing of tires of unbalanced uniformity There are many causes of abnormal worn and early worn. - Page 7 1. Spare tire 1. Spare tire 2. Front wheel 2. Front wheel 3. Rear flywheel 3. Forward rear wheel 4. Rearward rear wheel Note： Note： ・ 4 x 4, rear single tire model ・ 6 x 4, model with front and rear tires of...
- Page 8 1. Tread wear indicator position mark (Example) 2. Tread wear indicator (Example) 3. Lug pattern 4. Rib pattern Note： ・ Examples of tire abnormal worn and the main 1. Spare tire causes 2. Front wheel 3. Forward rear wheel, drive axle...
- Page 9 16C-8 Functional Inspection (All models) Illustrat Status of worn Main causes and locations to inspect ion No. Spot worn is generated with The tire wheel is not a true circle and is deformed. a bias to the shoulders, and The hub or knuckle is not a true circle or is deformed. in the worst cases, the tire Considerable play in the hub bearing or lower link ball joint can become polygon-...
- Page 10 Functional Inspection (All models) 16C-9 Tire wear inspection Conduct a test drive. Note： Note： ・ Inspection of waddling phenomenon of radial ・ If there is no change, continue the procedure. tires Replace the original tires one by one to track down the Set the vehicle to the running conditions.
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Page 11: Tire Air Pressure Inspection
16C-10 Functional Inspection (All models) Tire air pressure inspection Tire air pressure inspection tire worn. Next, if you do not find a problem in the alignment in the wheel alignment inspection, inspect the Air pressure increases when the tires are warmed up from shock absorbers or tire balance. - Page 12 Functional Inspection (All models) 16C-11 10R22.5 850 kPa {8.50 kgf/ 825 kPa {8.25 kgf/ — — — 144/142 cm2 / 123 psi} cm2 / 120 psi} 725 kPa {7.25 kgf/ 850 kPa {8.50 kgf/ 790 kPa {7.90 kgf/ 790 kPa {7.90 kgf/ 10R22.5-14PR —...
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Page 13: Air Suspension Vehicle Height Initial Adjustment
・ Reference value of frame upper surface height Air suspension vehicle height initial adjustment for adjustment Note： Vehic ・ ISUZU air suspension specification Tire size Height Air spring target height model Adjust the air spring height to the target value. - Page 14 Functional Inspection (All models) 16C-13...
- Page 15 16C-14 Functional Inspection (All models)
- Page 16 Functional Inspection (All models) 16C-15...
- Page 17 16C-16 Functional Inspection (All models)
- Page 18 Functional Inspection (All models) 16C-17 Note： ・ Make vehicle height adjustment by operating ・ PRIMAAX suspension type the remote controller. ・ Do not adjust the rod length to specified value. Target value of air spring height Adjust the air spring height to the target value. Note：...
- Page 19 16C-18 Functional Inspection (All models)
- Page 20 Functional Inspection (All models) 16C-19...
- Page 21 16C-20 Functional Inspection (All models)
- Page 22 Functional Inspection (All models) 16C-21...
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Page 23: Disc Wheel Inspection
16C-22 Functional Inspection (All models) Disc wheel inspection Disc wheel inspection Caution： ・ If there is a difference, the wheel nut may Note： possibly be loose or wheel bolt may be ・ Visual inspection of installation condition of the damaged. disc wheels Confirm that all wheel bolts and wheel nuts are attached. - Page 24 Functional Inspection (All models) 16C-23 1. Crack or damage of the ornament holes 1. Wheel bolt 2. Crack or damage of welds 2. Wheel mating surface, flat area 3. Fatigue of wheel nut contact surface 3. Wheel nut seating surface 4.
- Page 25 / 406 to 443 lb・ft } time. ISO 8/ISO 10 Tightening torque (applied with lubricant) bolts (Except Isuzu axle ： 450 to 500 N・m { 45.9 to 51.0 JIS 6 bolts models for kgf・m / 332 to 369 lb・ft } Australia) ：...
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Page 26: Rear Air Suspension Inspection (Fvr Primaax)
Functional Inspection (All models) 16C-25 Rear air suspension inspection (FVR PRIMAAX) Rear air suspension inspection (FVR PRIMAAX) Note： description of function ・ Cross tube Note： Check for cracks, damage, metal shavings, or looseness at ・ Visual inspection the beam connection. Replace all worn or damaged parts. End cap hex bolts of cross tube must be retorqued at the A visual inspection of the suspension should be first 1,500 km (1,000 miles). -
Page 27: Height Sensor
16C-26 Functional Inspection (All models) Thereafter, follow a 1-year/80,000 km (50,000 mile) inspection and re-torque interval. Off highway and severe service operating conditions require more frequent inspections than on highway service operation. Note： ・ Height sensor Check the bracket, lever and height sensor rod for bending and damage. -
Page 28: Workshop Manual
Published: Mar., 2019 All rights reserved. 1st Edition '09 - '14 WORKSHOP MANUAL Functional Inspection (All models) Issued by ISUZU MOTORS LIMITED Service Technical & Training Dept. Shinagawa-ku, Tokyo, 140-8722 Japan...
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