1998 Isuzu F-Series Service and Repair Manual

Isuzu's 1998 F-Series spanned two different tilt cabs. The Japanese-built FRR kept the 7.1-liter 6HE1-TC inline-six turbodiesel, while the FTR and FVR, assembled with General Motors on the 86-inch BBC medium tilt cab, already decode with the 7.8-liter 6HK1-TC. Because injection, cooling and chassis data differ between those engines and cabs, this factory service and repair manual is organised by exact model and year. It gives procedures, specifications, torque values, wiring diagrams, diagnostics and maintenance schedules for Class 5 through Class 7 work, from brakes and steering to clutch and driveline repairs.

Engines covered

• 7.1L inline-six turbodiesel — SOHC, turbocharged, diesel
• 7.8L inline-six turbodiesel — SOHC, turbocharged, diesel

Body styles covered

• 2-door tilt cab chassis

Trims covered

• FRR
• FTR
• FVR

Known issues on the 1998 F-Series. No recalls are on federal record for this model year. NHTSA lists one owner complaint, filed against the power train. The clutch, transmission and driveline chapters in this manual give the inspection steps and specifications needed to confirm wear before parts are replaced.