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FOREWORD 
This workshop manual has been prepared to provide information on electrical circuits for the following Hino Vehicles. 
Applicable for FG8J, FL8J, FM8J and SG8J series, equipped with J08E engine 
When making any repairs on your vehicle, be careful not to be injured through improper procedures. 
As for maintenance items, refer to the Owner's Manual. 
All information and specifications in this manual are based upon the latest product information available at the time of print- 
ing. 
Hino Motors reserves the right to make changes at any time without prior notice. 
Please note that the publications below have also been prepared as relevant workshop manuals for the components and 
systems in this vehicles. 
Manual Name 
Pub. No. 
Chassis Workshop Manual 
S1-MFGE04A EWD 
J08E Engine Workshop Manual 
S5-MJ08E08A 
Trouble shooting Workshop Manual 
S7-MFGE03A 
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CHAPTER REFERENCES REGARDING THIS WORKSHOP MANUAL 
Use this chart to the appropriate chapter numbers for servicing your particular vehicle. 
CHAPTER 
MANUAL No. 
S1-MFGE04A 
MODELS 
FG8J, FL8J, FM8J, SG8J 
GENERAL INTRODUCTION 
1-001 
CLUTCH MAIN UNIT 
3-001 
CLUTCH CONTROL 
4-001 
TRANSMISSION MAIN UNIT 
6-001 
(MF06S) 
6-002 
(EATON ES11109) 
PTO (POWER TAKE-OFF) 
9-001 
(MF06S) 
9-002 
(EATON) 
TRANSMISSION/TRANSFER CONTROL 
10-001 
PROPELLER SHAFT 
12-001 
(HD1050) 
12-002 
(HE1160) 
12-003 
(MC1040) 
DIFFERENTIAL CARRIER 
14-001 
(SH17) 
14-002 
(THD17) 
BRAKE EQUIPMENT 
15-001 
(AIR OVER HYDRAULIC BRAKE) 
15-002 
(FULL AIR BRAKE) 
SERVICE BRAKE 
16-001 
(AIR OVER HYDRAULIC BRAKE) 
16-002 
(FULL AIR BRAKE) 
EXHAUST BRAKE 
19-001 
PARKING BRAKE 
21-001 
STEERING UNIT 
23-001 
POWER STEERING 
24-001 
FRONT AXLE 
26-001 
(LF578) 
26-002 
(MF678) 
26-003 
(MF67I) 
REAR AXLE 
27-001 
(DIFFERENTIAL GEAR SERIES: SH17) 
27-002 
(DIFFERENTIAL GEAR SERIES: THD17) 
WHEEL AND TIRE 
28-001 
SUSPENSION 
30-001 
(MODEL: FG) 
30-002 
(MODELS: FL, FM) 
30-003 
(MODEL: SG) 
CHASSIS FRAME 
32-001 
CAB 
36-001 
ELECTRICAL EQUIPMENT 
37-001