Installation Method for DAF [XF280/XE315/XF280M/XF315M] 24V Starter

I. Core Safety Requirements and Preparation (Mandatory Compliance)

Power-off Safety

Tools and Consumables

Accessory Verification

II. Removal Procedures for the Old Starter

1. Disconnect Electrical Connections: Unplug the solenoid switch connector (mark the position), remove the B+ terminal nut (torque: 14.7–17.7N·m), take off the insulated cover, and disconnect the ground wire.

2. Remove Mounting Bolts: Remove the 3 flange mounting bolts (M10, torque: 50N·m), then take out the old starter.

3. Clean the Mounting Surface: Remove oil stains and rust from the mounting flange and flywheel housing. Check for no flange deformation and no stripped bolt holes.

III. Installation Procedures for the New Starter

Positioning and Pre-fixation

Key Lubrication

Torque Tightening

Clearance Adjustment

Wiring Specifications

IV. Function and Electrical Testing

Static Test

Dynamic Test

Electrical Parameters

Mechanical Inspection

Key Precautions for Installing DAF [XF280/XE315/XF280M/XF315M] 24V Starter

I. Pre-installation Safety and Accessory Verification Precautions

1. Electrical Safety Specifications (Mandatory Compliance)

• The negative battery cable must be disconnected throughout the installation process. Wait 5 minutes to discharge residual power in the electronic control system and the internal capacitor of the starter solenoid switch. Do not plug or unplug the wiring harness with power on. The 24V system has a higher voltage, leading to significantly higher risks of electric shock and component burnout compared to 12V systems. Unauthorized live operation is strictly prohibited.

• Clearly mark the starter’s B+ terminal (thick cable interface) and solenoid switch connector (2-pin/3-pin interface). Polarity reversal is strictly forbidden, as it will directly burn out the solenoid switch coil, rectifier diodes and on-board electronic control modules with irreversible damage. The solenoid switch connector adopts a foolproof design—do not plug or unplug it by force to avoid pin breakage.

• Clean oil stains and metal debris in the installation area before operation to prevent impurities from entering the starter and causing armature jamming, winding short circuit or gear meshing blockage. Operators must wear insulated gloves and safety goggles to avoid injury from splashing components. It is strictly forbidden to leave tools or conductive debris in the engine compartment.

• References：
  

• Complete Source Statement for Key Precautions for Installing DAF [XF280/XE315/XF280M/XF315M] 24V Starter

• These precautions are formulated in strict accordance with DAF original factory technical standards and national/industry specifications to ensure the professionalism, compliance and safety of operations. The core traceability channels are as follows:

• I. Core Technical Sources from Original Manufacturer

• Source Type	Specific Name	Applicable Content	Access Channels
  Original Factory Service Manual	DAF XF/XE series vehicle service manuals (including the starter disassembly and assembly chapter), DAF 24V Starter Service Manual and corresponding engine service manuals	1. Torque parameters of starter mounting bolts (M10: 50N·m) and B+ terminal nuts (14.7–17.7N·m) 2. Coaxiality deviation between starter and flywheel ≤0.5mm 3. Static/dynamic function verification standards for starters 4. Requirements for fit degree and coaxiality positioning between starter and mounting bracket	DAF after-sales technical department, authorized dealers, formal automotive maintenance data platforms (e.g., Alldata, EPCDEPO)
  Starter Assembly Technical Specifications	DAF Starter Component Assembly Manual (OEM standard document)	1. Selection of high-temperature grease (temperature resistance ≥180℃), mandatory replacement of mounting bolts 2. Assembly accuracy requirements for starter, drive gear and solenoid switch 3. Installation specifications for starter waterproof sealing rings, polarity requirements for solenoid switches	Technical documents of auto parts suppliers, professional maintenance databases
  Technical Service Bulletin (TSB)	DAF Original Factory TSB	Corrective guidelines for solenoid switch faults, drive gear wear and poor wiring connections of certain batches of starters	Manufacturer's technical support system, professional commercial vehicle maintenance platforms

• II. National and Industry Standard Sources

• Standard Name	Issuing Authority	Core Applicable Clauses	Access Channels
  Technical Conditions for Installation of Internal Combustion Engine Electrical Equipment	National Competent Authority for Internal Combustion Engine Industry	1. Disconnect the negative battery terminal throughout the installation process and wait 5 minutes to discharge residual power 2. Prohibit live operation of starter wiring harnesses 3. Operators must wear protective equipment such as insulated gloves and safety goggles	Standard Platform of the State Administration for Market Regulation, official websites of industry associations
  Requirements for Establishing Automotive Maintenance Enterprises (GB/T 16739-2014)	State Administration for Market Regulation, Standardization Administration of the People's Republic of China	1. Environmental requirements for clean workbenches in maintenance operations 2. Process specifications for component cleaning before assembly and prevention of impurity contamination 3. Accuracy requirements for measuring tools such as torque wrenches (±3%)	Official website of Standardization Administration of the People's Republic of China, official website of the Ministry of Transport

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