PREVOST X3-45 COMMUTER User Manual

SECTION 00 : GENERAL INFORMATION
8
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
4. FASTENER
4.1 FASTENER STRENGTH IDENTIFICATION
Most commonly used metric fastener strength
property classes are 9.8 and 10.9 with the class
identification embossed on the head of each
bolt. Customary (inch) strength classes range
from grades 2 to 8 with radial line identification
embossed on each bolt head actual grade (i.e., a
grade 7 bolt will have 5 embossed radial lines on
the bolt head). Some metric nuts will be marked
with single digit strength identification numbers
on the nut face. Figure 12 shows the different
strength markings.
When replacing metric fasteners, be careful to
use fasteners of the same or greater strength
than the original fasteners (the same number
marking or higher). It is also important to select
replacement fasteners of the correct size.
Correct replacement fasteners are available
through the parts division. Some metric
fasteners available in aftermarket parts sources
were designed to metric standards of countries
other than the United States and may be of a
lower strength, may not have the numbered
head marking system, and may be of a different
thread pitch.
FIGURE 11: THREAD NOTATION 00002
FIGURE 12: BOLT STRENGTH MARKINGS 00003

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