Automotive Manufacturing Documentation

When to Activate This Skill

• "Write a work instruction for [process]"
• "Create a business process for [operation]"
• "Document manufacturing procedure"
• "Build SOP for [automotive process]"
• "Create APQP documentation"
• "Write quality inspection procedure"
• "Document assembly/machining/material handling process"

Core Document Types

1. Work Instructions (WI)

Purpose: Detailed step-by-step operator guidance Key Elements:

• Clear title and document ID
• Scope and applicability
• Required materials, tools, equipment
• Safety warnings and PPE requirements
• Numbered sequential steps with visual aids
• Quality checkpoints and acceptance criteria
• References to specifications/standards

2. Standard Operating Procedures (SOP)

Purpose: Standardized process methodology Key Elements:

• Purpose and scope
• Responsibilities and authorities
• Process flowchart
• Detailed procedure steps
• Forms and records
• Related documents
• Revision history

3. Business Process Documents

Purpose: High-level process definition and control Key Elements:

• Process ownership
• Inputs and outputs
• Key performance indicators (KPIs)
• Process flow diagram
• Interaction with other processes
• Risks and controls
• Continuous improvement tracking

Standards Compliance

IATF 16949 Requirements

• Process approach methodology
• Risk-based thinking
• Turtle diagrams for process definition
• FMEA linkage
• Control plan alignment
• Layered process audits consideration

ISO 9001 Structure

• Context of organization
• Leadership and planning
• Support and operation
• Performance evaluation
• Improvement focus

APQP/PPAP Integration

• Process flow diagrams
• PFMEA considerations
• Control plans
• Work instructions as PPAP deliverables
• Measurement system analysis references

Writing Framework

Document Structure Template

1. HEADER
   - Document Title
   - Document Number
   - Revision/Date
   - Approvals (Prepared/Reviewed/Approved)

2. PURPOSE & SCOPE
   - Why this document exists
   - What processes/operations it covers
   - What it doesn't cover

3. RESPONSIBILITIES
   - Who performs the work
   - Who supervises
   - Who approves/validates

4. SAFETY & PPE
   - Hazards and risks
   - Required personal protective equipment
   - Emergency procedures

5. MATERIALS & EQUIPMENT
   - Parts/components list
   - Tools required
   - Equipment specifications
   - Gages and measuring devices

6. PROCEDURE/STEPS
   - Sequential numbered steps
   - Action-oriented language (verb-first)
   - Visual aids (photos, diagrams)
   - Quality checks embedded

7. QUALITY REQUIREMENTS
   - Specifications and tolerances
   - Inspection frequency
   - Acceptance/rejection criteria
   - Rework procedures

8. RECORDS & DOCUMENTATION
   - What gets recorded
   - Where records stored
   - Retention requirements

9. REFERENCES
   - Related documents
   - Engineering drawings
   - Specifications
   - Standards

10. REVISION HISTORY
    - Date, revision, changes made

Process Type Guidelines

Assembly Operations

• Focus: Sequence, torque specs, orientation
• Include: Part numbers, installation direction, fastener specifications
• Visuals: Assembly diagrams, before/after photos, exploded views
• Checks: Fit, alignment, function tests

Machining Operations

• Focus: Setup, program, tooling, parameters
• Include: Machine settings, feed/speed, tool specifications, fixtures
• Visuals: Setup photos, tool paths, measurement points
• Checks: Dimensional verification, surface finish, first-piece inspection

Quality/Inspection

• Focus: What to inspect, how to measure, accept/reject criteria
• Include: Gage R&R references, sampling plans, measurement methods
• Visuals: Measurement locations, gage usage, defect examples
• Checks: Calibration verification, data recording

Material Handling

• Focus: Movement, storage, protection, traceability
• Include: Handling methods, storage conditions, labeling, FIFO
• Visuals: Packaging methods, storage layouts, label formats
• Checks: Condition verification, count accuracy, traceability

Best Practices

Writing Style

• Active voice: "Insert the bolt" not "The bolt is inserted"
• Present tense: "Check the torque" not "The torque should be checked"
• Imperative mood: Direct commands to operator
• Concise: One action per step
• Specific: Exact values, not ranges when possible

Visual Elements

• Photos of actual parts/processes (preferred)
• Diagrams for complex assemblies
• Flowcharts for decision points
• Callouts for critical features
• Color coding for emphasis (warnings in red/yellow)

Quality Integration

• Embed quality checks within process steps
• Reference control plans
• Link to FMEA high-priority items
• Include mistake-proofing (poka-yoke) features
• Document inspection frequency

Revision Control

• Clear document numbering system
• Revision history table
• Change bars for modified sections
• Effective date tracking
• Training requirements for changes

Common Mistakes to Avoid

• Assuming operator knowledge
• Missing safety information
• Vague quantities or specifications
• No visual aids for complex operations
• Incomplete tool/equipment lists
• Missing quality acceptance criteria
• No revision history
• Passive voice or unclear instructions

Quick Reference: Document Selection

Output Format

When creating documents, structure output as:

# [DOCUMENT TITLE]
**Document Number**: [AUTO-XXX-####]
**Revision**: [X] | **Date**: [YYYY-MM-DD]
**Prepared**: _____ | **Reviewed**: _____ | **Approved**: _____

## 1. Purpose & Scope
[Content]

## 2. Responsibilities
[Content]

[Continue with standard sections...]

Supplementary Resources

For comprehensive methodologies and advanced topics: read ~/.claude/skills/AutomotiveManufacturing/CLAUDE.md

For document templates: ls ~/.claude/skills/AutomotiveManufacturing/templates/

Integration with Related Skills

A3CriticalThinking

When manufacturing issues arise, use A3 problem-solving methodology:

• Quality defects → Root cause analysis (5 Whys, Fishbone)
• Process failures → Structured countermeasure development
• Decision making → Apply priority hierarchy (Safety → Customer → Cost)

Load A3 skill: read ~/.claude/skills/A3CriticalThinking/SKILL.md

SupplyChain

For supplier-related documentation and requirements:

• Supplier quality requirements in work instructions
• PPAP documentation for purchased components
• Incoming inspection procedures

Load SupplyChain skill: read ~/.claude/skills/SupplyChain/SKILL.md

HoshinKanri

For strategic alignment of manufacturing objectives:

• Cascade targets to shop floor metrics
• Link work instructions to quality objectives
• Bowling chart for manufacturing KPIs

Load HoshinKanri skill: read ~/.claude/skills/HoshinKanri/SKILL.md

Key Principles

Priority Hierarchy (from A3CriticalThinking):

1. SAFETY FIRST     → Never compromise for cost or delivery
2. CUSTOMER VALUE   → Quality that meets/exceeds requirements
3. SHAREHOLDER VALUE → Optimize after 1 & 2 are secured

1. Safety First: Always lead with safety considerations - this is non-negotiable
2. Clarity Over Brevity: Be clear, even if it takes more words
3. Visual Communication: A picture is worth 1000 words
4. Measurable Requirements: Specific, measurable acceptance criteria
5. Traceability: Link to higher-level documents and standards
6. Living Documents: Build in revision and improvement processes
7. Problem Solving: Use A3 methodology for issues and improvements

Workflow Routing

Examples

Example 1: APQP Work Instruction Draft

Input: "Draft a work instruction for the damper assembly final inspection station as an APQP deliverable."

Output structure:

WI-QUA-DAMP-001 | Rev A | APQP Phase 4 | PPAP Element 11

Purpose: 100% end-of-line inspection for DSS damper assemblies before shipment.

Safety: Safety glasses mandatory. WARNING: Damper contains pressurised gas — do not disassemble.

Steps:
1. Retrieve damper from assembly conveyor
2. Visual: inspect for scoring, leaks, damage — reject on any defect
3. Rod extension length: 245mm +/-1mm (gauge G-044) — record on TL-DAMP-001
4. Leak test: submerge 30s in water bath — zero bubbles (CRITICAL: PFMEA #7, RPN 160)
5. Scan serial number into MES for traceability
6. Place approved part in shipping rack DS-007

IATF 16949 linkage: clause 8.5.1 (control of production), 8.6 (release), PPAP Element 11.

Example 2: IATF 16949 Clause Mapping for CNC Machining

Input: "Map our CNC turning operation to IATF 16949 — what do we need to document?"

Turtle Diagram (CNC Turning):

• Inputs: Raw bar stock (cert req'd), drawing rev B, CNC program P-4567
• Outputs: Turned component to drawing tolerances, first-off inspection record
• With What: CNC lathe, tooling per setup sheet, CMM for FAI
• How: Work instruction, SPC control plan
• Who: Level 2 machinist min; QE sign-off for new setups
• Metrics: Cpk >= 1.67 on critical dims, scrap <= 0.5%, OEE >= 80%