Freightliner Business Class. Manual — part 20
10.3
If the rear radial seal on the engine
crankshaft is leaking, replace the rear ra-
dial seal. For procedures, see the engine
manufacturer’s manual.
11. Remove the chocks from the tires.
26-10 Mercedes-Benz
Transmission Fluid
Changing and Magnetic
Plug Cleaning
Draining
1.
Park the vehicle on a level surface. Apply the
parking brakes and chock the rear tires.
2.
Drain the transmission fluid. See
NOTE: Drain the transmission fluid while the
transmission is warm.
2.1
Remove the magnetic drain plug from the
bottom of the gear case.
2.2
Discard the aluminum gasket.
2.3
Catch the transmission fluid in a suitable
container and dispose of it properly.
3.
Clean the area around the fill plug.
4.
Remove the fill plug from the side of the case.
Discard the aluminum gasket.
NOTE: Use a piece of key stock, or any other
convenient steel slug, to short the two magnetic
poles and divert the magnetic field.
5.
Clean the magnetic drain plug before installing it.
6.
Install the drain plug (p/n A 124 997 01 32) and a
new aluminum gasket (p/n N 00763 024105).
Tighten the drain plug 42 lbf·ft (57 N·m).
Filling
CAUTION
Operating a manual transmission with the fluid
level higher or lower than recommended can re-
sult in transmission damage. Do not overfill the
transmission; overfilling will force transmission
fluid out of the case through the main shaft open-
ings.
1.
Add transmission fluid until it is level with the
lower edge of the fill opening. See
for
location of the fill plug and
for correct
level. See
for approved transmission lu-
bricants and
for lubricant capacities.
MBT Transmission Lubricant Types
Manufacturer
Type
Mobil
Mobiltrans SHC 50 (RN 2952
E-2)
Table 8, MBT Transmission Lubricant Types
05/22/2001
f261102
1
2
3
NOTE: The transmission is shown from the left-hand
side.
1.
Transmission
2.
Fill Plug
3.
Drain Plug
Fig. 19, MBT Transmission Drain and Fill Plugs
f260006b
10/05/94
A
B
A. Full
B. Low
Fig. 20, Transmission Fluid Level Checking
Transmission
26
26/20
MBT Transmission Lubricant Capacities
Transmission Model
Refill Capacity
*
quarts (liters)
MBT660S-6O
9.5 (9.0)
MBT520S-6D
9.5 (9.0)
*
Quantities listed are approximate. Fill the transmission until the lubricant
is level with the bottom of the fill hole, with the vehicle in normal operating
position.
Table 9, MBT Transmission Lubricant Capacities
CAUTION
Use only Mobiltrans SHC 50 (RN 2952 E-2) fluid.
Do not mix fluid types. Adding RN 2952 E-5 fluid
(used in Eaton and Meritor transmissions) could
damage the radial seals.
2.
Clean the fill plug before installing it.
3.
Install the fill plug (p/n N000908 020001) and a
new aluminum gasket (p/n N 00763 024105).
Tighten the fill plug 42 lbf·ft (57 N·m).
Transmission
26
26/21
Title of Maintenance Operation (MOP)
MOP Number
Fifth Wheel Inspecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31–02
Fifth Wheel Lubricating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31–03
Frame Fastener Torque Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31–01
Holland Fifth Wheel Sliding Mechanism Inspecting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31–04
Frame and Frame Components
31
Index, Alphabetical
Business Class Trucks Maintenance Manual, December 2002
31–01 Frame Fastener Torque
Checking
Because of "bedding in" (or seating), the frame fas-
teners must be torqued at the recommended inter-
vals. These intervals apply to new vehicles, and to
frame fasteners that have been removed and in-
stalled.
NOTE: For off-highway operations, retorque the
frame fasteners the first 1000 miles (1600 km),
then periodically, depending on the operating
conditions.
CAUTION
Continued vehicle operation with insufficiently
tightened fasteners could result in bracket or
frame damage.
Typical frame fastener applications include front
frame brackets, suspension brackets, spring brack-
ets, fuel tank, exhaust and engine supports, frame
crossmembers and gussets, and fifth wheel mounting
brackets.
See Group 00 of the
Business Class
®
Trucks Ser-
vice Manual
for additional information on fasteners
and torque values.
Tighten all Freightliner AirLiner suspension fasteners
to the torque values in
. Also, tighten all sus-
pension air line fittings and air lines.
Freightliner Airliner Suspension
Torque Values
Description
Size
Torque
lbf·ft (N·m)
Leveling Valve Adjustment Nut
1/4–20
5 (7)
Leveling Valve Mounting Bolt
Nuts
5/16–18
14 (19)
Air Spring Upper Mounting
Locknuts
3/4–16
45 (61)
1/2–13
23 (31)
Air Spring Lower Mounting
Locknuts
1/2–13
55 (75)
Leaf Spring Mounting Eye Bolt
Locknuts
3/4–16
270 (365)
Shock Absorber Upper Bracket
Mounting Locknuts
5/8–11
125 (170)
Freightliner Airliner Suspension
Torque Values
Description
Size
Torque
lbf·ft (N·m)
Air Spring Upper Mounting
Bracket
5/8–11
125 (170)
Spring Hanger Mounting
Locknuts
3/4–10
210 (285)
Lateral Control Rod Nut
5/8–11
185 (136)
Table 1, Freightliner AirLiner Suspension Torque
Values
Tighten Hendrickson suspension fasteners to the
torque values given in
Hendrickson Suspension
Torque Values
Description
Size
Torque
lbf·ft (N·m)
Top Pad to Spring
Aligning Setscrew
(RT/RTE)
—
100–150 (135–200)
Top Pad Nut
(RT/RTE)
—
275–400 (375–542)
U-Bolt Locknut (U/UE)
7/8–14
237–302 (321–409)
Spring Pin Locknut
1/2–13
45–63 (61–85)
Torque Rod Straddle
Mount Nut
5/8–11
190 (260)
Torque Rod Stud
Locknut
1-1/4–12
175–225 (235–305)
Saddle Cap Stud
7/8–14
55–65 (75–90)
3/4–16
Saddle Cap Locknut
(RT/RTE)
7/8–14
225–275 (305–373)
Saddle Cap Locknut
(U/UE)
3/4–16
125–145 (169–197)
Adapter-Type Beam
End Locknut
3/4–16
210–240 (285–325)
Spring Center Bolt
7/16–20
50–60 (70–80)
1/2–20
65–75 (90–100)
1/2–13
Rebound Spacer
Locknut
1/2–13
38–45 (51–61)
Spring Alignment Clip
—
15 (20)
Frame and Frame Components
31
Business Class Trucks Maintenance Manual, December 2002
31/1
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