PREVOST X3-45 COMMUTER User Manual

SECTION 22: HEATING AND AIR CONDITIONING
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
15
Empty the shaft seal oil collecting tube at the
intervals specified by the
Lubrication &
Servicing Schedule in Section 24A.
During the 250-hour run-in period of the shaft
seal, an increased oil seep rate may occur.
FIGURE 17: SHAFT SEAL OIL COLLECTING TUBE
4.1.4 Maintenance - Oil Color & Level Check
Check the oil color and the oil level, top up as
needed. Change the oil if it has darkened (see
oil evaluation criteria below).
A/C compressor oil color & level check
Check compressor oil color and level
at the
intervals specified by the
Lubrication &
Servicing Schedule in Section 24A.
1. Run the compressor for at least 15 minutes,
the time required so that the oil gets clear,
unclouded and stabilized (without bubbles).
2. Check the oil level during operation. The
proper level is:
• R.H. sight glass: between ½ and ¾ of
sight glass height (Figure 18).
• L.H. sight glass: the full sight glass height
(Figure 19).
FIGURE 18: R.H. SIGHT GLASS
FIGURE 19: L.H. SIGHT GLASS
The oil level is expected to remain the same
over time except if there is a loss of refrigerant.
Adding oil must be done by taking the same
precautions as when changing oil in order not to
introduce the moisture content of the ambient air
in the air-conditioning system.
3. Check for discoloration of the oil. It should be
clear and light in color. Darkened, cloudy and
contaminated oil must be changed.
Diagnose the problem. See the following
images to help you evaluate the state of the
compressor oil.

PREVOST X3-45 COMMUTER Specifications

General

Engine	Volvo D13
Transmission	Allison B500
Fuel Type	Diesel
Length	45 ft (13.7 m)
Width	102 in (2.6 m)
Horsepower	500 hp
GVWR	54, 000 lbs
Height	141 in