John Deere 8.1 Cng Engine Maint. Chart - Blue Bird TC/2000 Owner's Manual

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JOHN DEERE 8.1 CNG ENGINE MAINTENANCE CHART
Operation
Check Engine Oil Level
Check Coolant Level
Check Air Cleaner
Restriction Indicator
Clean External Cooling
System Components
Change Engine Oil
Change Engine Oil Filter
Check Belt Tensioner & Belt Wear
Check Water Pump Weep
Hole Foam Filter
Inspect Natural Gas
Filter Element
Check Air Intake Hoses,
Connections, & System
Check Cooling System
Hoses & Connections
Check Coolant Solution
Clean & Adjust Spark Plug Gap
Clean Crankcase Vent Tube
Replace Natural Gas Filter Elem.
Check Crankcase
Vibration Damper
Inspect Natural Gas Lines
Pressure Test Cooling System,
Radiator, & Cap
Flush Cooling System
Replace Spark Plugs
Inspect Air Compressor
Check & Adjust Engine
Valve Clearance
Replace Belts
Inspect & Service Air
Cleaner Elements
Add Coolant
Service Intervals *
Daily
Daily
Daily
Daily
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
As Required
As Required
As Required
X - LOW SPEED OPERATION
Months / Miles Whichever Occurs First
*Service Intervals to be performed on a continuing basis.
Example: 1 / 3,000 means every month or every 3,000 miles.
General Instructions
See PowerTech 6081 CNG Engine Book.
See PowerTech 6081 CNG Engine Book. Check see through tank above radiator on
TCRE. Check sight glass on top front of radiator on TCFE.
See PowerTech 6081 CNG Engine Book.
See PowerTech 6081 CNG Engine Book. Clean exterior of radiator.
See PowerTech 6081 CNG Engine Book. Change after first 2,500 miles of operation.
Drain oil when hot while contaminants are still in suspension. Follow engine
manufacturers recommendation for SAE grade.
See PowerTech 6081 CNG Engine Book. Replace belt if necessary.
See PowerTech 6081 CNG Engine Book. Inspect for oil or coolant leakage. Replace
complete water pump assembly if leakage is detected.
See PowerTech 6081 CNG Engine Book. Filter should be white and dry. If not,
replace. Replace spring washer if damaged.
See PowerTech 6081 CNG Engine Book.
See PowerTech 6081 CNG Engine Book. Tighten all clamps securely.
See PowerTech 6081 CNG Engine Book. Add SCAs as needed.
See PowerTech 6081 CNG Engine Book. Adjust gap to .015". Tighten plugs to 28 lb-ft.
See PowerTech 6081 CNG Engine Book.
See PowerTech 6081 CNG Engine Book.
See PowerTech 6081 CNG Engine Book. Grasp with both hands and attempt to turn in
both directions. If rotation is felt, damper should be replaced.
See PowerTech 6081 CNG Engine Book. Inspect for loose fittings, leaks, cuts,
abrasions,etc.
See PowerTech 6081 CNG Engine Book. Pressure test system to 10 psi, including
radiator cap.
See PowerTech 6081 CNG Engine Book.
See PowerTech 6081 CNG Engine Book. Adjust gap to .015". Tighten plugs to 28 lb-ft.
See PowerTech 6081 CNG Engine Book. Clean components fouled with carbon.
See PowerTech 6081 CNG Engine Book.
See PowerTech 6081 CNG Engine Book.
See PowerTech 6081 CNG Engine Book. Replace primary element when air restriction
indicator shows a vacuum of (12in.-H
See PowerTech 6081 CNG Engine Book.
- NORMAL OPERATION
88
0), or if element is damaged or torn.
2

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