Komatsu PC130-7 Maintenance Checklist
Daily pre-start checks · service schedule by operating hours · warning alert actions for the Komatsu PC130-7 hydraulic excavator. Verify all intervals, fluid grades and wear limits against the official Komatsu PC130-7 Operation & Maintenance manual.
Daily Pre-Start Checklist
Complete before every shift — about 10–15 minutes. Do not operate if any check fails. Watch the LCD monitor for RED/AMBER alerts.
Engine Oil Level
Pull dipstick on left side of engine — wipe, reinsert, check mark
Act if: Oil at or below MIN — add Komatsu 15W-40 DH1 before starting
Engine Coolant Level
Check coolant reservoir expansion tank against MIN/MAX marks
Act if: Below MIN — top up OAT antifreeze (50:50); never open cap when hot
Fuel Level
Check fuel gauge on monitor panel and tank sight glass (250 L tank)
Act if: Very low — refuel; do not run tank dry (air-lock risk)
Hydraulic Oil Level
Check sight gauge on hydraulic tank with machine on level ground (90 L)
Act if: Below MIN — add Komatsu HO46-HM (ISO VG46)
Hydraulic Hoses & Cylinders
Walk around and visually inspect all hoses, fittings and cylinder rods
Act if: Any oil leak, damaged hose or weeping cylinder seal — do not operate
Engine Oil & Fluid Leaks
Inspect under engine bay, hydraulic pump area and all visible connections
Act if: Any dripping or pooling of oil or fuel — identify source before starting
Track Tension & Condition
Check track sag using hydraulic adjuster; inspect shoes for damage or missing bolts
Act if: Excessive slack or broken/missing shoes — tension or report to workshop
Undercarriage
Walk around — inspect rollers, carrier rollers, track frame, sprocket and idler
Act if: Cracked frame, missing bolts or seized rollers — do not operate
Grease Pin Joints
Grease boom foot, boom tip, arm-to-boom, arm tip, bucket pins and linkage
Act if: Pins are dry, hot or squeaking — grease before operating
Air Cleaner Restriction Indicator
Check restriction indicator on air cleaner body — red band = service required
Act if: Red indicator visible — service air cleaner element before operating
Radiator & Cooler Screens
Inspect and clean dust and debris from radiator and oil cooler screens
Act if: Screens heavily blocked — clean before operating to prevent overheating
Cab and Controls
Test horn, travel alarm, all warning lamps and lock lever before moving
Act if: Any warning lamp stays on after start-up or control malfunction — investigate before work
Walk-Around Structural
Visually inspect boom, arm, bucket, counterweight mounting bolts and welds
Act if: Visible cracks in boom/arm welds or loose counterweight bolts — do not operate
Service Schedule by Hourmeter
Use the hourmeter reading; all daily checks apply at every interval. CHANGE / REPLACE / INSPECT / GREASE / CHECK / OVERHAUL. Verify grades/quantities with the official Komatsu PC130-7 O&M manual.
CHANGE engine oil — drain & refill
11 L Komatsu 15W-40 DH1
REPLACE engine oil filter element
INSPECT fan / alternator belt tension & condition
CHANGE swing drive oil — initial change*
2.5 L Komatsu TO30
CHANGE final drive oil — initial change* (both sides)
2.1 L Komatsu TO30 each side
GREASE all pin joints — boom, arm, bucket, linkage
INSPECT track shoes — wear & bolt tightness
* Initial fill change at the first 250h service only; swing and final-drive oil then change every 1,000h thereafter.
CHANGE engine oil & REPLACE oil filter
11 L Komatsu 15W-40 DH1
INSPECT fan / alternator belt tension & condition
CHECK engine valve clearance — adjust if required
REPLACE primary fuel filter (pre-filter / water separator)
REPLACE air cleaner outer element
GREASE swing circle — swing pinion teeth
GREASE all pin joints — boom, arm, bucket, linkage
GREASE track rollers and carrier rollers
INSPECT track rollers, carrier rollers, idlers, sprockets
CHECK alternator output, battery condition, wiring harness
CHECK counterweight & boom-foot bolt torque
INSPECT track shoes — wear & bolt tightness
CHANGE engine oil & REPLACE oil filter
11 L Komatsu 15W-40 DH1
REPLACE fan / alternator belt
REPLACE primary fuel filter (pre-filter / water separator)
REPLACE secondary fuel filter (main filter element)
REPLACE air cleaner outer element
REPLACE air cleaner inner safety element — never clean
REPLACE hydraulic return filter element
CHANGE swing drive oil — recurring change
2.5 L Komatsu TO30
CHANGE final drive oil — recurring change (both sides)
2.1 L Komatsu TO30 each side
GREASE swing circle — swing pinion teeth
CHECK swing circle bearing — play & backlash
GREASE all pin joints and track / carrier rollers
INSPECT track rollers, carrier rollers, idlers, sprockets
CHECK alternator, battery, wiring & bolt torque
INSPECT track shoes — wear & bolt tightness
CHANGE engine oil & REPLACE oil filter
11 L Komatsu 15W-40 DH1
REPLACE fan / alternator belt
CHANGE engine coolant — drain & refill
13.4 L OAT antifreeze (non-amine)
REPLACE primary fuel filter (pre-filter / water separator)
REPLACE secondary fuel filter (main filter element)
REPLACE air cleaner outer & inner safety elements
CHANGE hydraulic oil — drain, flush & refill
90 L Komatsu HO46-HM (ISO VG46)
REPLACE hydraulic return filter element
REPLACE hydraulic breather filter
INSPECT hydraulic hoses & fittings — replace cracked / hardened
GREASE swing circle — swing pinion teeth
GREASE all pin joints and track / carrier rollers
REPLACE track shoes as required — measure against wear limits
OVERHAUL / rebuild engine — major rebuild milestone
Komatsu SAA4D95LE-3 · full engine overhaul per Komatsu schedule
Warning Alerts & Immediate Actions
RED = stop engine immediately. AMBER = take corrective action before continuing. Confirm thresholds and monitor codes with the Komatsu PC130-7 O&M manual.
Engine Oil Pressure Low (Code C)
Engine oil pressure below the minimum safe threshold.
Immediate action: Shut down the engine IMMEDIATELY. Do NOT restart. Check oil level. Call Komatsu service.
Risk if ignored: Catastrophic engine seizure within seconds to minutes
Engine Overtemp / Coolant High (Code A)
Engine coolant temperature critically high — overheating in progress.
Immediate action: Stop all work. Idle 2 minutes then shut down. Do NOT open the radiator cap when hot. Call service.
Risk if ignored: Warped cylinder head, blown head gasket, seized engine
Battery / Charging Fault (Code B)
Alternator not charging — battery charge critically low.
Immediate action: Park safely. Inspect the alternator belt and battery terminals. Do not restart if the fault persists — call service.
Risk if ignored: Complete machine shutdown, KOMTRAX data loss
Air Cleaner Clogged (Code D)
Air cleaner severely blocked — engine starved of air.
Immediate action: Stop the machine. Clean or replace the outer element immediately before resuming operation.
Risk if ignored: Turbo damage, engine underfuelling, power loss, black smoke
Hydraulic Oil Overheat
Hydraulic oil temperature critically high — cooling capacity exceeded.
Immediate action: Stop the machine immediately. Allow the hydraulic oil to cool with the engine at idle. Check cooler fins and oil level.
Risk if ignored: Hydraulic pump and motor seal damage, fluid breakdown, system failure
Oil Maintenance Due (Code N)
Engine oil change interval has passed.
Immediate action: Schedule the engine oil and filter change at the next service stop. Do not delay more than 10 operating hours.
Risk if ignored: Continued operation with degraded oil — accelerated wear on engine bearings
Hydraulic Oil Level Low
Hydraulic oil below the minimum level in the tank.
Immediate action: Top up with Komatsu HO46-HM. Inspect for leaks. Do not operate until the source is identified.
Risk if ignored: Hydraulic pump cavitation — pump damage and seal failure
Fuel Level Low
Fuel tank approaching empty — risk of air ingestion into the fuel system.
Immediate action: Refuel at the next opportunity. Do not allow the tank to run dry — bleeding will be required.
Risk if ignored: Air lock in fuel system, engine shutdown, difficult restart requiring a technician
Track Tension / Undercarriage Wear
Track sag exceeds the acceptable range or undercarriage components worn.
Immediate action: Inspect track sag (standard: 320–360 mm). Adjust tension or schedule an undercarriage inspection.
Risk if ignored: Accelerated track and roller wear, track de-railing, costly undercarriage replacement
Swing Lock On (Code M)
Swing lock engaged — machine cannot rotate the superstructure.
Immediate action: Disengage the swing lock before starting swing operations.
Risk if ignored: Machine locked in travel-only mode; swing operations disabled
Dig. Depth
Dump Height
