Isuzu F & G Series 2009 MZW Transmission Workshop Manual – Clutch & Side PTO

Description

Isuzu F & G Series 2009 MZW Transmission Workshop Manual

This workshop manual covers the MZW model manual transmission as fitted to the 2009MY Isuzu F & G Series trucks. It is the same technical documentation used by professional technicians to service, overhaul, and repair the transmission, clutch system, and side power take-off unit on these vehicles. The manual is divided into three major sections: Manual Transmission (MZW), Clutch (MZW), and Side Power Take-Off (MZW).

File Details

• Manual Type: Workshop Manual
• Brand: Isuzu
• Model: F & G Series (2009 Model Year)
• Transmission Model: MZW6P
• Document Number: MGMZW-WE-0991
• Language: English
• File Format: PDF
• Page Count: 124 pages

Chapters Covered

The manual is organized into the following major sections and sub-sections:

• 5C – Manual Transmission (MZW)
  • General Description – Function and Operation
  • Functional Inspection
  • Primary Specifications
  • Special Tools
  • Shift Lever ASM – Components, Disassembly, Reassembly
  • Gear Control Cable – Components, Installation
  • Vehicle Speed Sensor – Removal, Installation
  • Neutral Switch – Removal, Inspection, Installation
  • Backup Light Switch – Removal, Inspection, Installation
  • Transmission ASM – Removal, Installation
  • MZW Transmission – Components, Disassembly, Reassembly, Tightening Torques
  • Rear Oil Seal – Components, Removal, Installation
  • Input Shaft – Components, Disassembly, Reassembly
  • Counter Shaft – Components, Disassembly, Reassembly
  • Gear Control – Components, Disassembly, Reassembly
  • Relay Lever – Components, Disassembly, Reassembly
  • Control Box – Components, Disassembly, Reassembly, Tightening Torques
• 5E – Clutch (MZW)
  • Clutch System – Description, Inspection, Air Removal, Pedal Adjustment
  • Clutch ASM – Components, Disassembly, Reassembly, Primary Specifications
  • Clutch Master Cylinder – Function, Components, Removal, Disassembly, Reassembly, Installation, Specifications
  • Clutch Booster – Function, Components, Removal, Disassembly, Reassembly, Installation, Inspection, Specifications, Tightening Torques
• 5G1 – Side Power Take-Off (MZW)
  • Air Control Type PTO – Function and Operation
  • List of Failures
  • Primary Specifications
  • Components
  • Disassembly
  • Inspection
  • Reassembly
  • List of Tightening Torques

What This Manual Provides

The Isuzu F & G Series 2009 MZW Transmission Workshop Manual gives technicians and fleet maintenance personnel a complete, step-by-step reference for overhauling the MZW6P manual transmission and its related systems. The manual begins with an outline view and functional description of the MZW transmission, explaining the output reduction mechanism, synchronesh gear design, built-in oil pump, and bearing arrangement. It then moves into a detailed functional inspection chart that links symptoms such as abnormal noise, difficulty in shifting, gears falling out, and oil leakage to their probable causes and required corrections.

For the transmission itself, the manual provides a complete component breakdown with exploded diagrams showing every major assembly: clutch housing, front case, rear case, input shaft assembly, counter shaft assembly, gear control, relay lever, and control box. Disassembly and reassembly procedures are given step by step, with special attention to the aluminum case construction and the precautions required to avoid damage to ribs and sealing surfaces. The manual also covers removal and installation of the transmission assembly from the vehicle, including propeller shaft removal, clutch booster disconnection, cable separation, and engine-transmission bolt torque values.

The clutch section covers both the 14-inch and 15-inch clutch assemblies used across the 4HK1-TCS, 6HK1-TCN, 6HK1-TCC, and 6HF1-TCN engine variants. It includes the clutch system description, air removal procedure, clutch pedal free play adjustment, clutch switch adjustment, and complete disassembly and reassembly of the clutch cover assembly, pressure plate, clutch disk, release bearing, and clutch shaft. The clutch master cylinder and clutch booster sections provide function and operation explanations, component views, removal and installation procedures, inspection criteria, and primary specifications including piston diameters, spring free lengths, and installed loads.

The side PTO section covers the air control type power take-off unit, with a failure diagnosis list, primary specifications, exploded component views, and full disassembly, inspection, and reassembly procedures. This includes output gear and shaft removal, bearing inspection, shift arm measurement, shim selection for bearing preload, oil seal installation, and air cylinder assembly. The section also provides tightening torques for all fasteners and guidance on sealant application.

Why This Manual Matters

Transmission and clutch repairs on commercial vehicles demand precise tolerances, correct torque values, and proper assembly sequences. The MZW transmission uses helical gears, a synchronesh mechanism with ball-and-spring detents, and a built-in oil pump that supplies lubrication to the gear shafts. Incorrect assembly or the use of wrong shims can lead to gear noise, shifting problems, oil leaks, or premature bearing failure. This manual provides the exact measurements, shim selection charts, tightening torques, and inspection limits needed to complete the job correctly.

The manual includes detailed shim selection procedures for both the counter shaft and output shaft, with measured value tables that tell you exactly which shim thickness to install based on your measurement. It also provides the special tool numbers required for bearing removal and installation, oil seal installation, and shim selection, so you can identify the correct tooling before starting work. For technicians working on fleet vehicles or performing a complete transmission overhaul, this level of detail is essential for a successful repair.

Models and Engines Covered

The procedures in this manual apply to 2009MY Isuzu F & G Series trucks equipped with the MZW6P manual transmission. The manual includes specific procedures and torque values for both 4H engine and 6H engine configurations where they differ, including differences in select cable and shift cable lengths, control box mounting, and power assist arrangement. Clutch specifications are given for 14-inch and 15-inch clutch sizes across the 4HK1-TCS, 6HK1-TCN, 6HK1-TCC, and 6HF1-TCN engine models.

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This Isuzu F & G Series 2009 MZW Transmission Workshop Manual is delivered as an instant PDF download. There is no shipping, no waiting, and no physical book to keep track of. Once your order is complete, you can download the manual immediately and access it on any device — laptop, tablet, or smartphone. The PDF is printable, so you can print the pages you need for the job and keep them in the workshop. Whether you are servicing a single truck or maintaining an entire fleet, this manual gives you the technical information required to do the job right.