U-Joint Service - Quick Reference Guide - PREVOST H3-41 Maintenance Manual

• The driveshaft and yokes must be
marked (phasing marks) (see paragraph 4.3
mark propeller shaft (PHASING MARKS))
before removal to ensure reinstallation in the
same position as removed.
All universal joints securing hardware
•
(bearing retainers and bearing retainers
bolts, spring tabs and bolts) must be
removed and replaced using new OEM
specified replacement parts (FIGURE 1 &
Figure 2).
• When removing the universal joint from
the yoke, the end caps must remain
attached to the cross at all times if the
universal joint is to be reused (Electrical or
masking tape can be used to keep the end
caps in place while driveshaft is removed.)
• Unless the universal joint is being
replaced, universal joint end caps must not
be removed for any reason. If the end caps
become dislodged while the driveshaft is
removed from the vehicle, the universal joint
must be replaced. If replacement is needed,
the universal joint must be replaced as a
complete assembly.
Universal joints must be treated as a
•
single unit. This means that parts (such as
the cross, needle bearings, or end caps)
must not be interchanged between new
and used joints.
Universal joints must be positioned
•
and seated correctly between the yoke
tabs (ears) on the input (tail shaft side) and
carrier (differential side) yokes ().
The driveshaft must be installed facing
•
the correct direction, in particular, with
respect to the splined slip joint.
• The driveshaft must be phased correctly.
• All fasteners
manufacturer's specifications and torque-
marked. DO NOT use air or power tools to
install and torque bolts or fasteners.
• Bolt locking tabs, if used, must be bent
over the flats of the bolts after final torque is
checked.
The driveshaft guard (hoop) must be in
•
place.
Driveshaft universal joints must be
•
greased properly.
must be torqued to
PA1621 Maintenance Manual All Series | Revised May 2018
SECTION 09: PROPELLER SHAFT
NOTE: If necessary, rotate driveshaft to allow
access to all grease fittings.
• It is the responsibility of the maintainer
who begins the driveshaft installation to
complete the procedure in its entirety. The
installation procedure
carried over (passed on) to the next shift.
Supervisors must witness and verify the correct
installation of the driveshaft as follows:
The universal joint caps must be seated
•
properly between the yoke tabs (ears)
(FIGURE 28).
• All universal joint bearing retainers must
have been replaced using new hardware
and fasteners.
• All fasteners have been torqued properly
and are torque-marked.
• Locking tabs, if used, must be bent over
the bolts.
There must be no mixing of new and old
•
parts on a universal joint.
The driveshaft must be phased properly.
•
Driveshaft guard (hoop) must be in
•
place.
Driveshaft universal joints must be
•
greased after reinstallation of driveshaft in
vehicle (fresh grease showing at all u-joint
end caps).
4. U-JOINT SERVICE – QUICK REFERENCE
GUIDE
This section is intended as a "quick reference"
only. Refer to Spicer Driveshaft's Service
Manual DSSM-0100 for detailed warnings and
instructions.
Precautions
• Always follow all safety practices when
servicing, removing,
propeller shaft.
• Always use support strap to prevent this
heavy propeller shaft from falling out of the
vehicle during removal and installation.
Always put the transmission in neutral
•
before working on the propeller shaft.
must not he
and/or installing a
5