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Freightliner Cargo Maintenance Manual - part 17

f400057

05/27/93

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

Cargo Maintenance Manual, January 2000

40/2

Title of Maintenance Operation (MOP)

MOP Number

Driveline Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41–01

Driveline Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41–02

Driveline

Index, Alphabetical

Cargo Maintenance Manual, January 2000

41–01 Driveline Inspection

Before lubricating the driveline U-joints and slip-
joints, make the following checks:

Check that the yoke-strap capscrews (

Fig. 1

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.

Check each of the output and input end yokes
(

Fig. 1

, 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

Table 1

. If the

end yoke is still loose after tightening the yoke
nut, install a new yoke and yoke nut.

NOTE: If the end-yoke locknut was removed for
any reason, install a new one.

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.

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
(123 N·m). Replace the midship bearing assem-
bly if the rubber cushion is worn or oil-soaked.

End-Yoke Nut Torque Specifications

Description

Thread Size

Torque: lbf·ft

(N·m)

Transmissions

Eaton/Fuller FS-4205,
5205, 5306, 6305, 6306,
and 8206

1-1/4–18

300–350

(405–475)

Fuller RT-6609

1-1/2–18

400–450

(540–610)

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-17-145, RS-
19-145, RS-19-220, RS-
21-145 and RS-21-230

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)

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

Check the slip-joints for spline wear by trying to
bend the sleeve-yoke and splined shaft back and
forth (

Fig. 2

). If looseness is greater than 0.007

inch (0.18 mm), replace both the sleeve-yoke
and the splined shaft.

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

Fig. 3

If the driveshaft tube requires straightening or
replacement, balance the repaired driveshaft be-
fore installing it. See Group 41 of the

Cargo

Workshop Manual

Driveline

Cargo Maintenance Manual, January 2000

41/1

Check the driveshaft for missing balance
weights, and for debris build-up. Remove any
build-up. If any balance weights are missing, re-
move the driveshaft and have it balanced; see
Group 41 of the

Cargo Workshop Manual

For driveshafts with slip-joints, check that the
yoke plug is not loose or missing. See

Fig. 4

Ref. 2. Replace the yoke plug if needed. If the
yoke plug is missing, the splined shaft may be
hitting the yoke plug and knocking it out; check
the driveshaft for proper length.

41–02 Driveline Lubrication

U-Joint Lubrication

Wipe all old grease and dirt from each U-joint
grease fitting. See

Fig. 4

, Ref. 8.

Use a hand-type grease gun, or a high-pressure
gun with a low-pressure adaptor, to lubricate the
U-joints.

NOTE: If a low-pressure adapter is not used
with the high-pressure gun, the U-joints may not
receive enough lubricant.

f410057a

10/06/94

NOTE: Not all fasteners are shown.

Transmission

Half-Round End Yoke

U-Joint Assembly

Yoke Strap and Capscrew

Coupling Shaft

Midship Bearing and Mount

Bearing Cup

Slip-Joint Assembly

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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