Thermo King MD-MT, Operator'S Manual

Page: 23 / 192

23
Maintenance Inspection Schedule
A closely followed maintenance program will
help to keep your Thermo King unit in top
operating condition. The following general
schedule is provided to assist in monitoring that
maintenance. The schedule covers units with conventional
coolant and units with ELC.
Pre
trip 750
Hours
1,200
Hours
Annual/
3,000
Hours
Inspect/Service These Items
NOTE: The 1,200 hour maintenance interval may be extended to
2,000 hours or 1 year (whichever occurs first) when equipped with
EMI fuel filter and EMI bypass oil filter.
Microprocessor
• Run pretrip test (see “Pretrip Test” in the Operating Manual).
Engine
• Check fuel supply.
• • Check engine oil level.
• • • • Check engine coolant level.
CAUTION: Do not remove radiator cap while coolant is hot.
• • Inspect belts for condition and proper tension.
• • Check engine oil pressure hot, on high speed. Minimum 40 psig (276 kPa)
(oil pressure gauge option).
• • • • Listen for unusual noises, vibrations, etc.
• • Dry air cleaner. Check air restriction indicator (if so equipped). Change air
cleaner element when indicator reaches 25 in. Replace air cleaner element at
2,000 hours or 1 year (whichever occurs first) if air restriction indicator has
not reached 25 in.
If not equipped with an air restriction indicator, replace air cleaner element at
2,000 hours or 1 year (whichever occurs first).
• Clean and service crankcase breather and check air cleaner hose for
damage.
• Change standard (white) fuel filter.
• Change EMI 2000 (black) fuel filter.
• Inspect and clean fuel prefilter and electric fuel pump filter.
• Drain water from fuel tank and check vent.
• • Check and adjust engine speeds (high and low speed).
• Check condition of engine mounts.
• Maintain year round antifreeze protection at –30 F (–34 C).
— Change green engine coolant every 2 years.
— Change ELC (red) engine coolant every 5 years or 12,000 hours. Units
equipped with ELC have an ELC nameplate on the expansion tank. See “ELC
(Extended Life Coolant)” on page 83.
Engine Oil Change Intervals (see below)
NOTE: Change engine oil and filter (hot).
• Oil change interval with API classification CG-4 (or better) mineral oil or
synthetic oil.
• Oil change interval with API classification CG-4 (or better) mineral oil or
synthetic oil, and EMI 2000 bypass oil filter (see Tool Catalog).