Thermo King 919180, Manual

Page: 59 / 148

59
Engine Maintenance
EMI 2000
EMI 2000 is an extended maintenance interval
package. It was phased in as standard equipment
on this unit in the first quarter of 2001. The EMI
2000 package consists of the following key
components:
• New EMI 2000-Hour Cyclonic Air Cleaner
Assembly and Air Cleaner Element (Standard
equipment on all TS units)
• New EMI 2000-Hour Fuel Filter (black with
gold lettering)
• New EMI 2000-Hour By-Pass Oil Filter
(black with gold lettering)
• API Rating CG-4 Mineral Oil
• Five Year or 12,000 Hour ELC (Extended Life
Coolant).
The EMI package allows standard maintenance
intervals to be extended to 2,000 hours, or 1 year,
whichever occurs first.
NOTE: Units equipped with the EMI 2000
package do require regular inspection in
accordance with Thermo King’s maintenance
recommendations.
NOTE: The new EMI 2000 oil filters and new
EMI 2000 air cleaners are NOT interchangeable
with the oil filters and air cleaners previously
used in this unit. See Service Bulletin T&T 275
for information about retrofitting EMI 2000
components.
Engine Lubrication System
The TK 3.74 diesel engine has a pressure
lubrication system. Oil is circulated by a trochoid
type oil pump driven by the crankshaft timing
gear and has several times the capacity required
by the engine. Oil is picked up through a suction
tube with a screened inlet. Oil to the rocker arm
shaft flows through a tube on the outside of the
engine and into the head through a restrictor
fitting.
Oil pressure is affected by oil temperature,
viscosity and engine speed. Subnormal oil
pressures usually may be traced to lack of oil,
faulty relief valve or worn bearings. The use of
improper viscosity oil will also produce low oil
pressure shutdowns.
Engine Oil Pressure Sensor
Engine oil pressure sensor should rise
immediately on starting. If engine oil pressure
drops below 10 ± 2 psig (69 ± 14 kPa), the sensor
signals the microprocessor to stop the engine. See
ThermoGuard
µ
P-T Microprocessor Controller
Diagnosis Manual.
Engine Oil Change
The engine oil should be changed according to the
“Maintenance Inspection Schedule”. Drain the oil
only when the engine is hot to ensure that all the
oil drains out. When changing oil, try to make
sure that the trailer is not tipped away from the
direction that the oil is supposed to flow from the
oil pan. It is important to get as much of the
residual oil out as possible because most of the
dirt particles are in the last few quarts of oil to
drain out. Refill the pan with oil (see the
“Specifications” chapter) and check the dipstick
level. Run the unit, and then recheck the oil level.
NOTE: Fill the crankcase slowly so oil will not
run into the breather hose, thus filling up an
open cylinder. Leaving the dipstick out while
adding engine oil will vent the crankcase.
Add oil as necessary to reach the full mark. See
Specifications chapter of this manual for correct
type of oil.