PREVOST X3-45 COMMUTER User Manual

SECTION 10: FRONT I-BEAM AXLE
D DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
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2. DESCRIPTION
The Dana Spicer S84U front axle is of the ‘’Reverse Elliot’’ type. The front axle consists of a girder section
beam with knuckles. Each knuckle is carried on a parallel king pin, with a steep angle taper roller bearing at
its top and a plain phosphor bronze bush at bottom.
The unitized hub bearings used on the NDS range of axles, are non-serviceable items. Bearings are pre-
adjusted, lubricated and have seals fitted as part of the manufacturing process. The bearings are greased for
life and there is no need or facility for re-lubrication.
Brakes are manufactured by KNORR-BREMSE.
Steering ball joints with hardened balls and rubbing pads incorporate compression springs which
automatically take up any wear.
The tie rod simplifies toe-in adjustment. The maximum turning angle is set through stop screws installed on
the inner side of the knuckle.
Steering stabilizer (damper) and steering drag link which are mounted on the front axle are described further
in Section 14: STEERING of this manual.
2.1 REFERENCE MANUALS
Additional information is found in the following manuals included on your vehicle Technical Publications
USB flash drive:
For kingpin rework:
Dana Parts & Service Instructions S84U Steer Axle KING PIN REWORK_ Manual NO 1985 B iss A
For hub bearing rework:
Dana Parts & Service Instructions S84U Steer Axle HUB BEARING REWORK_ Manual NO 1963 B
iss A
FIGURE 1: FRONT AXLE ASSEMBLY (I-BEAM)

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