PREVOST X3-45 COMMUTER User Manual

SECTION 01 : ENGINE
24
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual Section 01 revised Jan 2021
4. AUTOMATIC BELT TENSIONERS AND
IDLER PULLEY INSPECTION
With the engine running, if noise is coming from
the tensioners or drive system, an inspection
with the engine off is necessary.
MAINTENANCE
Remove belts and insp
ect automatic belt
tensioners, idler pulley bearings
at the
intervals specified by the Lubrication And
Servicing Schedule in
Section 24A:
LUBRICATION & SERVICING SCHEDULE.
FIGURE 22: COACH BELT ROUTING
A=alternator
C=crank pulley
I=dler
WP=water pump
T=tensioner
AC=air conditioning compressor
FIGURE 23: IDLER PULLEYS & AUTOMATIC BELT
TENSIONERS
I= IDLER
T= TENSIONER
FIGURE 24: IDLER PULLEYS & AUTOMATIC BELT
TENSIONERS
I= IDLER
T= TENSIONER
IDLERS
REF SYSTEM
I-1 L.H. SIDE ALTERNATOR
I-2 WATER PUMP DRIVE
I-3 A/C COMPRESSOR DRIVE
I-4 A/C COMPRESSOR DRIVE
I-5 R.H. SIDE ALTERNATOR DRIVE
AUTOMATIC BELT TENSIONERS
REF SYSTEM
T-1 L.H. SIDE ALTERNATOR
T-2 WATER PUMP DRIVE
T-3 R.H. SIDE ALTERNATOR DRIVE
4.1 BEARING INSPECTION
1. First, set parking brake, turn the ignition
OFF and set the rear start selector switch to
the OFF position.
2. Remove all belts on left hand alternator,
water pump drive, A/C compressor drive and
alternator drive.
3. Spin all idler pulleys, I-1 thru I-5, plus the
idlers that are part of the automatic belt
tensioners T-1 thru T-3.
4. Listen if some idlers are noisy and check for
play in the bearings by hand.

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