PREVOST X3-45 - Heating and Air Conditioning; Oil Specifications; Engine; Allison Transmission

Technical Information 119
DRIVE AXLE
Minimum
value
Nominal
value
Maximum
value
Thrust angle
(degrees)
-0.04 0 0.04
TAG AXLE
Minimum
value
Nominal
value
Maximum
value
Parallelism
(degrees)
-0.02 0 0.02
(*) Use the drive axle as reference
HEATING AND AIR CONDITIONING
Two air conditioning systems are available: the
large capacity (central) A/C and an optional
auxiliary A/C. The large capacity A/C provides
adequate capacity of conditioned and filtered air
for all climatic conditions. Fresh air is drawn into
the system from the left (driver’s) side of the
vehicle. Return air is taken from the middle of
the vehicle. The driver’s heater and defogger
are controlled separately from the central unit.
An air mixture selector enables air to be drawn
into the system from outside the vehicle or
recirculated. The optional auxiliary A/C is used
to cool air delivered from registers in the
passenger overhead compartments.
AUXILIARY A/C
Air conditioning
capacity
2 tons
Refrigerant type 134a
Air flow 450 cfm (12,7 m
3
/min)
COMPRESSOR (for auxiliary A/C)
Number of cylinders 6
Operating speed 700 to 6 000 rpm
Oil capacity 6 U.S. oz. (0,18 l)
Approved oil ZXL100PG
CENTRAL A/C
Air conditioning
capacity
7.5 tons
Refrigerant type 134a
Heating capacity 152 000 Btu/h
Air flow 2 600 cfm (73,6 m
3
/min)
COMPRESSOR (for central A/C)
Number of cylinders 6
Operating speed
400 to 2 200 rpm
(2,600 rpm, intermittent)
Minimum speed for
lubrication
400 rpm
Oil capacity 4.5 U.S. qts (4,3 l)
Approved oil Castrol SW-68 (POE)
NOTE
The above oils are suitable for use with
reciprocating compressors using refrigerant
R-134a and with evaporator temperatures
above -40°F (-40°C).
OIL SPECIFICATIONS
ENGINE
Heavy-duty engine oil SAE 15W-40 meeting API
classification CI-4 and military specification MIL-
L-2104E.
ALLISON TRANSMISSION
The Allison transmission is factory filled with
Castrol TranSynd automatic transmission fluid. It
can also be filled with Dexron III/VI or any
equivalent Class C4 hydraulic fluid.
ZF-ASTRONIC AUTOMATIC TRANSMISSION
The ZF-Astronic transmission must be filled with
Castrol Syntrans grade 75W-85 oil.
DIFFERENTIAL
Multigrade gear oil meeting MIL-L-2105-D:
85W140 is recommended for use in drive axle.
This lubricant performs well over a broad
temperature range, providing good gear and
bearing protection in a variety of climates. If
temperature drops below 10°F (-12°C), 80W90
should be used, and below -15°F (-26°C),
75W90 should be used. In extreme conditions or
for better performance, full synthetic gear oil
should be used.
FAN GEARBOX
Only Mobil SHC 630 synthetic oil (Prevost
#180217) is recommended for the fan gearbox.