1. Create Urgency — Show why change is necessary NOW. Use data: downtime losses, MC/RAV vs. competitors, COUR. The "burning platform." Without urgency, change initiatives stall immediately.
2. Build a Guiding Coalition — Form a team of influential leaders combining formal authority AND credibility. A coalition of only managers without craft respect will fail. One with only craft without management authority will be ignored.
3. Form a Strategic Vision — Clear, compelling, simple. People need to see where they're going. "Reduce unplanned downtime 40% in 18 months" is a vision. "Be excellent" is not.
4. Communicate the Vision — Relentlessly. Every meeting, every shift change, every KPI review. Leaders must model the behaviors they're asking for — walking the floor, asking about reliability metrics, attending P&S meetings.
5. Remove Obstacles — Identify and eliminate organizational barriers: systems, structures, and people who actively block the change. A supervisor who constantly pulls planned work for reactive emergencies is an obstacle.
6. Generate Short-Term Wins — Plan and create visible wins early. Quick wins (first 90 days) build credibility, silence skeptics, and maintain momentum. Pick a bad actor asset with a known solution and fix it visibly.
7. Sustain Acceleration — Use early wins to drive deeper change. Don't declare victory prematurely. Organizations that declare victory after 6 months almost always regress.
8. Anchor in Culture — Embed new behaviors in hiring criteria, training programs, performance reviews, and recognition systems. Culture is the LAST thing to change, not the first.

Principle 1 — Planners Form a Separate Department

Planners must be organizationally separate from craft supervision. A planner who also supervises technicians will always prioritize the urgent (today's work) over the important (next week's preparation). The planner works FOR the supervisors by preparing work packages — not alongside them in the field.

Principle 2 — Focus on Future Work

The planner's time horizon is work not yet started. Once a job enters execution, it belongs to the supervisor. Planners diverted to manage active jobs degrade planning quality for future work — the cost compounds every week.

Principle 3 — Component-Level Files (Technical Library)

For each significant asset, maintain a file containing: historical job plans, parts lists with vendor info, OEM manuals, special tools required, isolation/clearance procedures, and lessons learned from past repairs. This file transforms individual technician experience into organizational knowledge available to everyone.

Principle 4 — Estimates Based on Craft Expertise

Estimates should reflect what a skilled craftsperson can accomplish — not the average performer, not padded for worst-case. Accurate estimates enable accurate schedule loading and meaningful schedule compliance measurement.

Principle 5 — Recognize the Craft (Feedback Loop)

Craft technicians are the source of field knowledge that improves job plans. A feedback loop must exist: technicians complete job feedback noting actual time, parts deviations, problems, and improvements. The planner incorporates this into the job plan file — individual experience becomes organizational memory.

Principle 6 — Measure Performance with Wrench Time

Wrench time (hands-on productive time as % of available work time) is the fundamental measure of planning and scheduling effectiveness. Improving from the industry average of 25–35% to world-class 55–65% roughly doubles craft productivity without adding headcount.

The P-F Interval — Governing Concept for All PdM

The P-F interval is the time between when a potential failure (P) can first be detected and when functional failure (F) occurs. It governs how PdM programs are designed:

• Monitoring frequency must be less than half the P-F interval
• Response time after detection must also fit within the remaining P-F interval
• Technologies with longer P-F intervals allow less frequent monitoring

Competency-based training focuses on demonstrated ability — not attendance. The test is not "did they take the class?" but "can they perform the task correctly in the field?"

PdM Technology Certification Levels

Knowledge Management

When experienced technicians retire, they take institutional knowledge with them unless it's systematically captured. Strategies: document job plans with lessons learned (Palmer Principle 5), require CMMS failure code notes, formal mentoring programs, accessible technical libraries with OEM manuals and RCA reports.

1. Functions & Performance Standards — What is the asset supposed to do, and how well? A pump circulating 300 GPM when 500 GPM is required is in functional failure even if it's running.
2. Functional Failures — In what ways can it fail to fulfill its functions? Not failure modes yet — the inability to meet the performance standard.
3. Failure Modes — What causes each functional failure? The specific physical event. "Impeller erosion reduces flow below 500 GPM" is a failure mode.
4. Failure Effects — What happens when each failure mode occurs? Factual description only — evidence the failure is occurring, physical damage, safety/environmental/production impact.
5. Failure Consequences — Why does each failure matter? RCM hierarchy: Safety/Environmental → Hidden → Operational → Non-operational. Consequence classification drives task selection.
6. Proactive Tasks — What should be done to predict or prevent each failure? Task selection hierarchy: On-condition → Scheduled restoration → Scheduled discard → Failure-finding. Task must be technically feasible AND worth doing.
7. Default Actions — What if no suitable proactive task exists? Options: RTF (if consequences acceptable), redesign, accept and document the risk.

Cost of Unreliability (COUR) — 6 Categories

Measurement Parameter Selection

• Displacement (mils p-p): Low frequency (<10 Hz) — measures how far the shaft moves
• Velocity (in/sec or mm/sec RMS): Mid frequency (10–1000 Hz) — ISO 10816 uses velocity for machine severity
• Acceleration (g): High frequency (>1000 Hz) — bearing damage detection via Spike Energy, kurtosis

Emissivity is the ratio of radiation emitted by a surface vs. a perfect blackbody (ε = 1.0). Shiny metals have very low emissivity (0.03–0.15) — they primarily reflect surrounding temperatures rather than emitting their own. This causes false readings unless corrected. Apply matte paint or tape, or use emissivity-corrected settings.

Applications by Category

1. Wear Debris Analysis

• ICP Spectrometry: Measures dissolved metals ≤8–10 µm. Key metals: Fe (steel wear), Cu (bearings/bushings), Pb (babbitt), Cr (ring/liner), Al (piston), Si (dirt contamination)
• Particle Count (ISO 4406): Counts particles by size; measures total contamination load
• Analytical Ferrography: Most detailed method. Magnetically deposits particles on slide for microscopic examination — identifies particle type, shape, size, and failure mode

2. Oil Condition Testing

• Viscosity: Most critical property. ±15% of new oil = warning; ±25% = change required
• TAN (Total Acid Number): Rising TAN = oil oxidation/degradation
• TBN (Total Base Number): Alkaline reserve in engine oils. When TBN drops to 50% of new value, change required
• RPVOT: Measures remaining antioxidant life in turbine/hydraulic oils

3. Contamination Analysis

• Water (Karl Fischer): Even 100 ppm can reduce bearing life 50%. Alert: >500 ppm for most hydraulics
• Fuel dilution (FTIR): Thins viscosity in engine oils
• Glycol/coolant: Causes sludge and severe oxidation; detected by glycol test or elevated potassium
• High Si without elevated Al: Soil/dirt ingestion (breather failure, seal failure)

Viscosity is the single most important lubricant property. The lubricant must maintain a hydrodynamic film separating metal surfaces under all operating conditions. Too low → film collapse, metal contact. Too high → excessive heat from shear and churning.

ISO VG Grades

The ISO VG number = nominal kinematic viscosity in cSt at 40°C, ±10%. Common grades: 32, 46, 68, 100, 150, 220, 320, 460, 680. Each grade is approximately double the previous in viscosity.

NLGI Grease Grades

ISO 4406 Cleanliness Code

Format: X/Y/Z — particle count range codes at ≥4µm, ≥6µm, ≥14µm per mL. Each number increment doubles the particle count. Typical targets: servo hydraulics 15/13/10; gearboxes 17/15/12.

Filtration Beta Ratio (βₓ): Upstream count ÷ downstream count at particle size x. β₁₀ = 200 means 99.5% efficiency at 10µm.

Misalignment is the leading cause of premature bearing and seal failure in rotating equipment.

Types

• Parallel (offset): Shaft centerlines parallel but offset. Dominant 2× RPM radial vibration.
• Angular: Centerlines meet at an angle. Strong 1× and 2× RPM axial vibration.
• Combined: Both — most real-world cases.

Soft Foot — Correct BEFORE Alignment Begins

• Parallel: One foot shorter → solid shims
• Angular: Canted foot → tapered shims
• Induced: Pipe/conduit strain on frame → fix the piping, not the shimming
• Squishy: Corrosion or debris under foot → clean and reshim

Alignment Tolerances

ISO 1940 Balance Grades

RCA Methods — Selection Guide

• 5-Why: Simple linear failure chains; quick team facilitation. Limitation: can reach different root causes depending on which "why" path is followed.
• Fishbone/Ishikawa: Brainstorming with the 6Ms (Man, Machine, Method, Material, Measurement, Mother Nature). Good for ensuring no cause category is overlooked.
• Fault Tree Analysis (FTA): Top-down, AND/OR gate logic. Best for complex multi-cause failures, safety events, and when probability quantification is needed.
• Apollo RCA: Cause-and-effect charting with evidence requirements at each causal link. Defensible and auditable.
• TapRooT®: Structured investigation with specific root cause categories. Most rigorous — used for serious safety incidents.

See Pillar 3 for full TPM 8-pillar detail. Domain 4 exam focus areas:

• TPM requires operator ownership — not just maintenance executing more PMs. The transfer of basic care is essential.
• Autonomous Maintenance 7-step progression must be understood sequentially
• OEE is the scorecard for TPM effectiveness: ≥85% world-class
• The Maintenance-Operations interface is the most critical organizational relationship for reliability
• Kotter's 8 steps (see Pillar 1) are the primary change management framework tested

World-Class Storeroom KPIs

• Fill rate: ≥95% requests filled from stock on first request
• Inventory accuracy: ≥98% physical count matches system at line-item level
• Stockout rate: <5% of requests result in emergency procurement
• ABC classification: A items (top 10–20% of SKUs, 70–80% of value) get tight controls; C items use simple min/max