Preventive Maintenance Checklist for Oilfield Equipment

Checklist Scope & Usage

This guide covers seven critical inspection zones: engine and drivetrain health, brakes and steering systems, tyre and wheel condition, electrical and lighting, cab and body safety, fluid systems and leakage, and HSE and compliance documentation. Priority ratings are assigned per item based on failure consequence and detection window. Critical items have a short detection window to unrecoverable failure or safety incident. Monitor items require a work order and defined re-inspection date. Routine items are documented and trended over time. All FLAG and STOP findings require photo documentation before the work order is raised in FleetRabbit.

Engine & Drivetrain Brakes & Steering Tyres & Wheels Electrical & Lighting Cab & Body Safety Fluid Systems HSE & Compliance

01Engine & Drivetrain: Health and Performance Assessment

The engine and drivetrain are the primary failure point for vehicles operating on engine-hour-intensive duties. OBD-II fault codes and engine hour accumulation are the primary running-vehicle indicators. Physical inspection of belts, hoses, and mounts requires direct access at every scheduled maintenance stop.

Engine Health — Running Vehicle and At Stop

No active OBD-II fault codes in critical or emissions categories — confirm via diagnostic reader or FleetRabbit telematics dashboard before dispatchCritical Engine coolant temperature within normal operating range on dashboard gauge — no temperature spike or warning lamp active during last journeyCritical Engine oil pressure warning lamp not illuminated at idle — verify on 5-minute warm-up before departure from yardCritical Engine oil level within MIN–MAX range on dipstick — no black colouration, metallic particles, or emulsification visible on dipstick tipMonitor Engine service interval status — engine hours vs next service threshold checked on FleetRabbit dashboard; no overdue service outstandingMonitor No abnormal exhaust smoke colour — blue smoke (oil burn), white smoke (coolant), or black smoke (over-fuelling) noted and flagged if presentMonitor Engine idle quality smooth — no misfires, rough running, or persistent vibration at idle speed that would indicate developing faultRoutine

Drivetrain and Transmission Condition

Transmission fluid level and condition within specification — no burnt odour, discolouration, or metal particles visible on dipstick or inspection capCritical No abnormal noise from gearbox, transfer case, or differential during drive — grinding, whining, or clunking noted and vehicle grounded until investigatedCritical Propshaft universal joints and centre bearing showing no excessive play, rust weeping, or grease loss on visual inspection with vehicle stationaryMonitor Drive belts and serpentine belt showing no cracking, fraying, or glazing on accessible surfaces — belt tension within finger-deflection specificationMonitor Engine and gearbox mounts showing no cracking, collapse, or excessive rubber deterioration on visual inspection from below vehicleRoutine Air filter restriction indicator within green zone — no red or amber flag showing that filter requires immediate replacement before dusty site operationRoutine

02Brakes & Steering

Brake and steering failures on access roads are the leading cause of serious vehicle incidents. Gradient terrain, loose surfaces, and heavily loaded vehicles demand full braking system integrity at all times. These items must be measured and recorded quantitatively, not estimated by feel during a test drive.

Brake System Condition and Performance

Brake fluid level within MIN–MAX reservoir markings — any fluid below MIN level triggers immediate investigation before vehicle dispatch to remote locationCritical Brake pedal firm and consistent — no sponginess, excessive travel, or pulsation under normal foot pressure indicating air in system or disc warpingCritical Front and rear brake pad thickness above 3mm minimum — measured through inspection aperture with callipers or probe where accessible without wheel removalCritical Brake disc surface showing no deep grooving, heat cracks, or significant rust pitting across the swept face on accessible wheelsMonitor Handbrake holding vehicle stationary on maximum accessible gradient — no rollback when applied with transmission in neutralMonitor No brake fluid seeping from caliper bleed nipples, brake hoses, or wheel cylinder unions — wet or stained components require immediate investigationMonitor Brake hoses free from surface cracking, abrasion damage, or chafing contact with chassis components on visual inspection of all accessible runsRoutine

Steering System and Suspension

Power steering fluid level within reservoir normal range — any whining noise from power steering pump under lock-to-lock movement flagged for investigationCritical Steering wheel free play not exceeding 30mm at rim — excessive play indicates worn steering box, track rod ends, or steering column jointsCritical No pulling, wandering, or vibration through the steering wheel at highway speed — straight-line tracking confirmed on last road test before inspection dateMonitor Front suspension ball joints and track rod ends showing no perceptible play on vertical and lateral rock test with wheel raised — grease nipples present and intactMonitor Shock absorbers showing no oil seeping from body seals — vehicle bounce test produces no more than one oscillation after release at each cornerRoutine

FleetRabbit Digital Inspection Platform

Digitise This Checklist in FleetRabbit

Zone-based inspection on mobile, timestamped photo capture, and automatic work order routing for every FLAG and STOP finding. Configured on your fleet asset hierarchy in 5–7 days.

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03Tyres & Wheels

Tyre failures are the most common cause of vehicle immobilisation in heavy operations. Road surfaces, debris, and heavily laden conditions combine to create the most demanding tyre environment. Tyre condition must be inspected physically, not inferred from mileage or age alone.

Tyre Condition and Pressure

All tyre pressures within manufacturer specification for vehicle load — checked cold with calibrated gauge, including spare tyre and any trailer tyresCritical Tread depth above 3mm legal minimum across full tread width on all tyres — checked at three points across the tread face using calibrated depth gaugeCritical No cuts, bulges, exposed ply cords, or sidewall impact damage visible on full circumferential inspection of all tyres including spareCritical Tyre wear pattern uniform across tread face — no edge wear (under-inflation), centre wear (over-inflation), or one-sided wear (alignment issue)Monitor Tyre age — no tyre in service exceeding 6 years from manufacture date (DOT date code on sidewall) regardless of tread depth remainingMonitor Bead seat area clean and free from corrosion — no rust weeping at rim-to-tyre interface indicating bead seal failure developingRoutine

Wheels and Wheel Fixings

All wheel nuts or bolts present and showing no sign of loosening — no rust staining around fixings indicating previous movement or overtorque damageCritical Wheel nut torque confirmed on heavy vehicles — torqued to manufacturer specification with calibrated torque wrench at this inspectionCritical Wheel rim showing no cracks, severe corrosion, or impact deformation on accessible surfaces — alloy rims particularly vulnerable to kerb strike damageMonitor Hub and wheel bearing showing no play on vertical and horizontal rock test with wheel raised — no grinding noise on free rotationMonitor Spare tyre serviceable, correctly inflated, and mounted securely in carrier — carrier securing bolt or lock functional and accessible to driverRoutine

04Electrical System & Lighting

Electrical failures cause the highest proportion of vehicle hold incidents in fleet operations. A single blown fuse or failed relay can immobilise a vehicle with no mechanical defect present. In environments operating in hours of darkness on remote roads, lighting failure is a direct safety hazard and a compliance breach.

Battery and Charging System

Battery voltage above 12.4V at rest or above 12.6V after 30-minute rest — checked with multimeter or via OBD-II reader at this inspectionCritical No battery warning lamp illuminated on dashboard — charging voltage between 13.8V and 14.4V at 2,000 rpm confirms alternator output within rangeCritical Battery terminals clean and tight — no white crystalline corrosion deposit, no terminal movement under firm hand pressureMonitor Battery age within replacement schedule — batteries over 4 years old in high-temperature environments flagged for capacity test before remote dispatchMonitor All fuses in main and auxiliary fuse boxes present and correct rating — no bypassed fuses or improvised electrical repairs visible in accessible panelsRoutine

Exterior Lighting and Signals

All headlights (main beam and dipped) functioning — lenses clear, beam aim not obviously misaligned, no condensation inside units indicating seal failureCritical Brake lights all functioning on both rear clusters — confirmed by second person or reversing towards a reflective surface with brake appliedCritical Indicators, hazard lights, reversing lights, and rear fog lights all functioning on full walk-round check with ignition onMonitor Beacon or amber warning light (where fitted on spec vehicles) functioning — test full rotation cycle before departure to siteMonitor Reversing alarm (where fitted) audible and operational — particularly critical for heavy vehicles operating around equipment and personnelRoutine

05Cab & Body Safety

Cab condition directly determines driver safety in collision and rollover events — the most serious injury outcomes in fleet operations. Structural cab items are non-negotiable: a vehicle with compromised cab integrity should not be dispatched to remote locations where emergency response times are measured in hours, not minutes.

Cab Structure and Restraints

All seatbelts present, latching securely, and retracting fully — webbing free from cuts, fraying, or chemical contamination across full belt lengthCritical Driver seat adjustment mechanism locking securely — seat cannot slide under braking force when lock is engaged; headrest at correct height for occupantCritical Airbag warning lamp not illuminated — airbag system fault active means SRS system may not deploy in collision; vehicle grounded until clearedCritical All door latches and locks functioning correctly — no door that requires multiple attempts to secure fully or opens from inside under normal handle operationMonitor Windscreen free from cracks in driver sight line — chips outside direct sight line documented; cracks of any length in sight line require immediate replacementMonitor Windscreen wipers clearing full swept area — no smearing, skipping, or streaking that would impair driver visibility in rain or dusty conditionsMonitor Horn functional — audible at 25 metres with windows closed; particularly important for area operations with pedestrian activityRoutine

Body Condition and Load Security

Load area, flatbed, or tank body showing no structural damage — cracks, deformation, or failed welds that could compromise load retention under road conditionsCritical All load securing points, lashing rings, and tie-down anchors present and functional — no corroded, bent, or missing fixings in load areaMonitor External mirrors providing full required field of view — no cracked, fogged, or maladjusted mirrors that reduce side or rear visibilityMonitor Vehicle number plates clean and fully legible — both front and rear, including any trailer plates if vehicle is towingRoutine

FleetRabbit Digital Inspection Platform

Digitise This Checklist in FleetRabbit

Zone-based inspection on mobile, timestamped photo capture, and automatic work order routing for every FLAG and STOP finding. Configured on your fleet asset hierarchy in 5–7 days.

Start Free Trial Book a Demo

06Fluid Systems & Leakage

Fluid leakage is the most detectable early-warning sign of mechanical deterioration — yet it is consistently the most under-reported finding in paper-based inspection systems. A minor oil seep at an engine rocker cover gasket costs a fraction of what it costs when ignored for months and allowed to contaminate the clutch assembly. Leakage findings must be photographed and work-ordered on the day of detection.

Engine and Gearbox Fluid Integrity

No engine oil leaking from sump gasket, rocker cover, camshaft seals, or front/rear crankshaft oil seals — inspect underside with vehicle raised or on rampsCritical No coolant weeping from radiator, hose joints, water pump, or heater matrix connections — white residue at any joint indicates intermittent coolant lossCritical No gearbox or transfer case oil weeping from output shaft seals, filler plugs, or casing joints — oil staining on underside of gearbox tunnel inspectedMonitor Coolant reservoir level within MIN–MAX markings and coolant free from rust, contamination, or oil film on surface — cloudy coolant indicates head gasket involvementMonitor Coolant hoses supple and free from cracking, swelling, or soft spots under gentle squeeze — particularly at ends near clamps where failure most frequently initiatesMonitor Fuel system showing no leakage at injector seals, fuel line connections, or filter housing — fuel odour in cab while stationary must be investigated before dispatchMonitor Engine bay showing no evidence of historical fluid spillage pooling on chassis rails, undertray, or subframe — old contamination documented and source identifiedRoutine

Axle, Differential, and Hydraulic Systems

Front and rear axle differential oil levels checked via filler plug — level to bottom of filler port thread; oil free from metallic contamination or water ingressMonitor Hydraulic system (tipper, crane, PTO equipment) showing no leakage at cylinder seals, hose connections, or control valve body — hydraulic oil level within reservoir normal rangeMonitor Windscreen washer fluid reservoir full — essential for dusty road operation where screen contamination can impair visibility within minutes of departureRoutine

07HSE & Compliance Documentation

In operations, vehicle compliance documentation is not a box-ticking exercise — it is the legal framework that determines whether a fleet manager or operator faces personal liability following a vehicle incident. Missing certifications can invalidate insurance, expose the employer to regulatory enforcement, and in serious incidents, result in prosecution of individuals. These items require positive confirmation, not assumption.

Vehicle Certification and Legal Compliance

Vehicle roadworthiness certificate (MOT/ITV/TÜV/equivalent) in date — expiry date confirmed in FleetRabbit compliance tracker and not within 30-day renewal windowCritical Vehicle insurance certificate in date and covering operations — any exclusions for off-road use, heavy loads, or remote area operations confirmed absentCritical Operator licence or road transport authority permit in date for commercial vehicles — confirmed on FleetRabbit certification tracker, not assumed from memoryCritical ADR or dangerous goods transport certificate in date if vehicle carries hazardous materials — certificate not within 60-day renewal windowMonitor Site access permit or contractor vehicle pass in date for operating site — vehicle will not be refused entry at gate due to expired access credentialsMonitor Vehicle weight classification correct for roads and bridges on planned route — GVW and axle weights within limit for any weight-restricted routes or access tracksRoutine

Driver Documentation and Safety Equipment

Driver licence valid, correct category for vehicle, and not expired — confirmed on FleetRabbit driver certification record, not self-declared by driverCritical Driver medical certificate in date (where required for HGV, ADR, or company-specific medical requirement) — expiry confirmed on FleetRabbit driver profileCritical Fire extinguisher present, correct rating for vehicle type, in date, and mounted securely in designated position — pin and tamper seal intactCritical First aid kit present, sealed or fully stocked, and in date — contents not past expiry date; kit accessible to driver without tools from cab or load areaMonitor Warning triangle or road flare kit present and accessible — required for breakdown notification on access roads with limited sight distancesMonitor PPE kit in vehicle — minimum requirement: high-visibility vest, safety boots, hard hat, and eye protection confirmed present for site entry complianceMonitor Lone worker device or satellite communicator charged and functional for remote location operations — check-in schedule communicated to fleet manager or control roomRoutine Driver hours record (tachograph, ELD, or manual log) up to date and not showing hours approaching legal driving limit before start of planned journeyRoutine

Inspection Zone Summary: Frequency and Priority Distribution

Inspection Zone	Every Stop	Running Monthly	Critical	Monitor	Total
Zone 1 — Engine & Drivetrain	All items	OBD-II check only	3	5	13
Zone 2 — Brakes & Steering	All items	Brake fluid check	4	6	12
Zone 3 — Tyres & Wheels	All items	Pressure check	4	4	11
Zone 4 — Electrical & Lighting	All items	Lighting walk-round	3	4	10
Zone 5 — Cab & Body Safety	All items	Seatbelt & screen	3	5	11
Zone 6 — Fluid Systems	All items	Engine bay check	2	7	10
Zone 7 — HSE & Compliance	All items	Cert expiry check	5	6	15
Total Checklist Items	82	Selected	24	37	82

How FleetRabbit Transforms Fleet Inspection

Fleet managers and top executives in operations face a common and costly challenge: inspection data collected on paper never reaches the people who can act on it in time. FleetRabbit eliminates the gap between field-level finding and management-level action.

01

Automated Work Order Routing

Every FLAG and STOP finding from a zone inspection automatically generates a corrective work order, assigned to the correct maintenance team, with photo evidence attached. No manual transcription. No lost defect reports.

02

Timestamped Photo Evidence

Inspectors capture geo-tagged, timestamped photos directly in the FleetRabbit mobile app. Every finding is documented at the point of discovery — creating an unbroken chain of evidence for insurance, regulatory audit, and internal investigation.

03

Real-Time Executive Dashboard

Fleet managers and operations directors see the live status of every vehicle across every site on a single dashboard. Open defects, overdue inspections, and compliance gaps surface instantly — no waiting for weekly paper reports.

04

Certification Expiry Tracking

FleetRabbit tracks every certification, permit, licence, and medical across your entire driver and vehicle fleet. Automated alerts fire 60 days, 30 days, and 7 days before expiry — eliminating the risk of a grounded vehicle at a gate.

05

Offline Mobile Capability

Zone inspections complete and sync without a mobile data connection — critical for remote locations with no signal coverage. Data uploads automatically when connectivity is restored, with no data loss.

06

Multi-Region Compliance Export

FleetRabbit structures inspection records to satisfy audit requirements across UK/EU, USA/Canada, GCC, and India frameworks — including DVSA, FMCSA, ADNOC, and DGMS — without post-processing or manual report assembly.

FleetRabbit Compliance Coverage for Vehicle Inspection Records

Region	Applicable Inspection Frameworks	FleetRabbit Inspection Record Output
UK / EU	DVSA operator licence conditions, PUWER 1998, LOLER 1998, HSE HSG136, DVSA Guide to Maintaining Roadworthiness, EU 96/53/EC	Timestamped pre-trip and post-trip inspection records, defect log with photo evidence, DVSA-compatible maintenance history export, operator licence audit trail
USA / Canada	FMCSA 49 CFR Part 396 driver vehicle inspection, DOT pre-trip inspection requirements, OSHA 29 CFR 1910.178, provincial MTO/MVI commercial vehicle standards	FMCSA-compatible DVIR records, driver certification tracking, corrective action work order linkage, photo evidence archive, DOT audit pack export
UAE / Saudi Arabia / GCC	UAE RTA vehicle inspection standards, Saudi MOT inspection requirements, ADNOC / Saudi Aramco contractor fleet requirements, Civil Defence permit conditions	Equipment condition inspection records for contractor fleet compliance, asset condition scoring, permit and certification expiry tracking, client audit pack generation
India	MV Act 1988, CMVR 1989 inspection standards, DGMS inspection directives, Oil India / ONGC contractor vehicle standards, AIS inspection requirements	Statutory inspection register entries, work order history per asset per inspection window, corrective action closure documentation for DGMS audit requirements

FleetRabbit Zone Inspection Results at Fleet Sites

73%

Fewer Unplanned Breakdowns

Breakdown events at 12 months post structured zone inspection deployment across FleetRabbit-deployed fleet sites

97%

Inspection Compliance Rate

Zone checklist completion rate on critical vehicle inspection items across digital deployment fleets

5–7 days

Deployment Time

Average time to live digital zone inspections on a 50-vehicle fleet including asset hierarchy build and team onboarding

100%

Work Order Linkage

FLAG and STOP findings automatically routed to corrective work orders with photo evidence attached from the inspection event

Frequently Asked Questions

QAt what brake pad thickness should a vehicle be grounded versus scheduled for planned replacement?

Industry practice distinguishes two thresholds: planned intervention at 4mm (or 5mm for heavy vehicles) and ground vehicle threshold at 2-3mm. Vehicles with overheated or glazed pads should be grounded regardless of thickness remaining, as glazed material provides significantly less friction than thickness measurement alone suggests.

QHow does this checklist integrate with FleetRabbit's daily driver pre-trip inspection for running-fleet monitoring?

This zone checklist covers the full physical inspection regime at scheduled maintenance stops. FleetRabbit's daily driver pre-trip inspection form provides the between-stop monitoring layer — visual fluid checks, tyre pressure, lighting walk-round, and cab safety items completed by the driver each day before departure.

QWhat causes accelerated tyre wear in fleet operations compared to highway operations?

Oilfield vehicles experience significantly higher tyre wear rates due to wellpad surfaces imposing greater sidewall flexing stress, loaded vehicles on gradient terrain producing higher braking forces, high ambient temperatures increasing running temperature, and frequent low-speed manoeuvring scrubbing tread faster than highway driving.

QCan this checklist replace a formal third-party vehicle safety inspection by a qualified engineer?

No. This checklist is an operational preventive maintenance tool designed for use by trained fleet drivers and maintenance technicians. It does not replace the formal periodic inspection conducted by a qualified vehicle technician or third-party inspection body, which includes brake efficiency testing and formal safety certificate issuance.

QHow should this checklist be migrated from paper to FleetRabbit without losing historical inspection data?

Historical paper inspection data should be imported as structured records against each vehicle asset in FleetRabbit before digital checklists go live. FleetRabbit's implementation team provides structured data import from prior paper and spreadsheet records as part of the standard fleet onboarding, typically completed within 5–7 working days.

QHow do fleet executives gain visibility across multi-site operations using FleetRabbit?

FleetRabbit's executive dashboard consolidates inspection status, open defect counts, compliance certification health, and maintenance cost trending across every site and every vehicle in a single view. Operations directors can drill from portfolio-level KPIs down to a specific vehicle's inspection history without switching systems.

Deploy in 5–7 Working Days

Deploy This Checklist as Live Digital Zone Inspections in FleetRabbit

Every zone and every item in this checklist is available as a structured digital work order in FleetRabbit — assigned to your fleet asset hierarchy, triggered by scheduled maintenance events, and completed on mobile at the vehicle location with photo capture and automatic work order routing for every abnormal finding.

Start Free Trial Book a Demo

Zone-Based Inspection Photo Documentation Auto Work Order Routing Compliance Audit Trail Offline Mobile Capable Multi-Region Compliance

Preventive Maintenance Checklist for Oilfield Equipment

01Engine & Drivetrain: Health and Performance Assessment

02Brakes & Steering

Digitise This Checklist in FleetRabbit

03Tyres & Wheels

04Electrical System & Lighting

05Cab & Body Safety

Digitise This Checklist in FleetRabbit

06Fluid Systems & Leakage

07HSE & Compliance Documentation

Inspection Zone Summary: Frequency and Priority Distribution

How FleetRabbit Transforms Fleet Inspection

Automated Work Order Routing

Timestamped Photo Evidence

Real-Time Executive Dashboard

Certification Expiry Tracking

Offline Mobile Capability

Multi-Region Compliance Export

FleetRabbit Compliance Coverage for Vehicle Inspection Records

FleetRabbit Zone Inspection Results at Fleet Sites

Frequently Asked Questions

Deploy This Checklist as Live Digital Zone Inspections in FleetRabbit

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