Freightliner Business Class. Manual — part 27
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f400057
05/27/93
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2
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A
B
C
D
A. 8-Stud Disc Wheel
B. 10-Stud Disc Wheel
C. 6-Spoke Wheel
D. 5-Spoke Wheel
Fig. 1, Wheel Nut and Rim Nut Tightening Sequence
f400033a
05/16/94
Fig. 2, Non-Corrugated Channel Spacer
f400032a
10/05/94
Fig. 3, Corrugated Channel Spacer
Wheels and Tires
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Business Class Trucks Maintenance Manual, January 1998
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Title of Maintenance Operation (MOP)
MOP Number
Driveline Inspecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41–01
Driveline Lubricating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41–02
Driveline
41
Index, Alphabetical
Business Class Trucks Maintenance Manual, January 1998
41–01 Driveline Inspecting
Inspecting
1.
Check that the yoke-strap capscrews (
Ref. 4) are tightened as follows:
•
Spicer 1590 and 1610: 50 to 60 lbf·ft (68
to 81 N·m)
•
Spicer 1710: 125 to 135 lbf·ft (170 to 183
N·m)
CAUTION
Do not overtighten the yoke-strap capscrews, due
to the extreme load occurring at high-speed rota-
tion. A loose or broken capscrew at any point in
the driveline weakens the driveline connection,
which could eventually result in serious vehicle
damage.
2.
Check each of the output and input end yokes
(
, Refs. 2 and 11) for cracks and loose-
ness. Replace cracked yokes. If any end yoke
can be moved in or out on its shaft, or can be
rocked on its shaft, disconnect the driveshaft and
U-joint from the end yoke. Check the drive com-
ponent’s shaft seal for leakage or other visible
damage that may have been caused by the
loose yoke. Replace the seal if needed. Tighten
the end-yoke nut to the value in
. If the
end yoke is still loose after tightening the yoke
nut, install a new yoke and yoke nut.
End-Yoke Nut Torque Specifications
Description
Thread
Size
Torque
lbf·ft
(N·m)
Transmissions
Fuller FS 4005,
5005, 5106,
6105, and 6206
1-1/4–18
300–350
(405–475)
Fuller RT 6609,
RT/RTO 6610, and
RT 8609
1-1/2–18
400–450
(540–610)
Fuller T 8607,
RT 7608LL,
RT 8608L, and
RT/RTO 6613
2–16
450–500
(610–675)
End-Yoke Nut Torque Specifications
Description
Thread
Size
Torque
lbf·ft
(N·m)
Allison AT-545
1/2–20
*
100–120
(140–160)
Allison MD Series
2–16
600–800
(815–1085)
Single Axle Input Shaft
Meritor RS–13–120,
RS–15–120 and –210,
RS–17–140 and –20,
RS–19–145 and –220,
and
RS–21–145 and –230
M32 x 1.5
740–920
(1000–1250)
Meritor RS–23–160
M45 x 1.5
1000–1230
(1355–1670)
Meritor RS–23–240
M39 x 1.5
920–1130
(1250–1530)
Tandem Axle Input and Output Shafts
Meritor
RD– and RR–17–145,
(of RT–34–145), and
RD– and RR–20–145
(of RT–40–145)
M39 x 1.5
920–1130
(1250–1530)
Coupling Shaft (Midship Bearings)
Spicer 1590, 1610,
and 1710
1-1/4–18
475–525
(644–712)
*
The Allison AT-545 transmission output shaft end-yoke is retained by a
1/2-20 x 1-1/2-inch bolt and a 1-1/16-inch washer. Both the bolt and the
washer must be replaced each time they are removed.
Table 1, End-Yoke Nut Torque Specifications
NOTE: If the end-yoke locknut was removed for
any reason, install a new one.
3.
Check the U-joint assemblies for wear by at-
tempting to move the driveshaft up and down,
and from side to side. If movement of the U-joint
trunnion in the bearings is greater than 0.006
inch (0.15 mm), replace the U-joint assembly.
4.
Check the midship bearing and bracket for loose-
ness and deterioration by attempting to move the
driveshaft up and down, and from side to side. If
the bearing is loose on its shaft, or rattles, re-
place it. If the bearing bracket is loose on the
frame, or the bearing mount is loose on the
bracket, tighten the mounting bolt nuts 91 lbf·ft
Driveline
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Business Class Trucks Maintenance Manual, January 1998
41/1
(123 N·m). Replace the midship bearing assem-
bly if the rubber cushion is worn or oil-soaked.
5.
Check the slip-joints for spline wear by trying to
bend the sleeve-yoke and splined shaft back and
forth (
). If looseness is greater than 0.007
inch (0.18 mm), replace both the sleeve-yoke
and the splined shaft.
6.
Check the driveshaft tubes for dents, bends,
twists, or other damage. If any tube appears to
be damaged, remove the driveshaft and check
the runout on the tube. If the tube is not straight
(and cannot be straightened) within 0.015 inch
(0.38 mm) on the slip-joint seal surface of the
splined shaft, 0.020 inch (0.51 mm) on the tube
3 inches (76 mm) from the front and rear welds,
and 0.025 inch (0.635 mm) at the center of the
tube, replace the tube. See
If the driveshaft tube requires straightening or
replacement, balance the repaired driveshaft be-
fore installing it. See Group 41 of the
Business
Class
®
Trucks Service Manual
.
7.
Check the driveshaft for missing balance
weights, and for debris build-up. Remove any
build-up. If any balance weights are missing, re-
f410057a
10/06/94
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NOTE: Not all fasteners are shown.
1.
Transmission
2.
Half-Round End Yoke
3.
U-Joint Assembly
4.
Yoke Strap and Capscrew
5.
Coupling Shaft
6.
Midship Bearing and Mount
7.
Bearing Cup
8.
Slip-Joint Assembly
9.
Driveshaft Tube
10. Driveshaft Yoke
11. Input Shaft Half-Round End
Yoke
12. Rear Axle
13. Splined Shaft
14. Dust Seal
15. Sleeve Yoke
16. Full-Round-Yoke Lug
17. U-Joint Cross
18. Lockplate and Capscrew
Fig. 1, Driveline Assembly With Midship Bearing For Single-Axle Installation
Driveline
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Business Class Trucks Maintenance Manual, January 1998
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