8 Vehicle Towing Instructions
55
Meritor Maintenance Manual MM-15103 (Issued 07-17)
Before you service a spring chamber, carefully follow the
manufacturer’s instructions to compress and lock the spring to
completely release the brake. Verify that no air pressure
remains in the service chamber before you proceed. Sudden
release of compressed air can cause serious personal injury
and damage to components.
9. If there are spring or parking brakes on the axle(s) that will
remain on the road when the vehicle is transported, and they
cannot be released by air pressure, manually compress and
lock each spring so that the brakes are released. Refer to the
manufacturer’s instructions.
After Towing or Drive-Away
Engage the parking brake to prevent the vehicle from moving
before you begin maintenance or service procedures that
require you to be under the vehicle. Serious personal injury
can result.
1. If an auxiliary air supply was used, apply the vehicle parking
brakes using the switch inside the cab of the vehicle. If an
auxiliary air supply was not used, begin with Step 2.
Before you service a spring chamber, carefully follow the
manufacturer’s instructions to compress and lock the spring to
completely release the brake. Verify that no air pressure
remains in the service chamber before you proceed. Sudden
release of compressed air can cause serious personal injury
and damage to components.
2. Apply the vehicle spring or parking brakes by manually
releasing each spring that was compressed before transporting
started. Refer to the manufacturer’s instructions.
3. Disconnect the auxiliary air supply, if used, from the brake
system of the vehicle that was transported. Connect the
vehicle’s air supply to the brake system.
4. Remove the covers from the hubs.
NOTE: Continue with Step 5 through Step 7 to install all axle shafts.
5. Install the gasket, if used, and axle shaft into the axle housing
and carrier in the same location it was removed from. The
gasket and flange of the axle shaft must be flat against the
hub. Rotate the axle shaft or the driveline as necessary to align
the splines and the holes in the flange with the studs in the
hub. Figure 8.1.
앫 If a gasket is not available: Apply a 0.125-inch (3 mm)
diameter bead of grey sealant, Meritor specification
2297-H-7054, around the mating surface of the hub and
around the edge of each fastener hole. Install the axle shaft
into the axle housing and carrier.
6. Install the dowels, if used, over each stud and into the tapered
holes of the flange.
7. Install the washers and stud nuts. Determine the size of the
fasteners and tighten the nuts to the corresponding torque
value shown Table O.
Table O: Shaft-to-Hub Torque Fastener Chart
8. Check the lubricant level in the axles and hubs where the axle
shafts were removed. Add the correct type and amount of
lubricant if necessary. For information about lubrication, refer
to Maintenance Manual 1, Preventive Maintenance and
Lubrication, or refer to the Lubrication Section of the
Maintenance Manual for the axle model you are working with.
To obtain this publication, refer to the Service Notes page on
the front inside cover of this manual.
Fastener
Thread
Size
Torque Value — Grade 8 Nuts lb-ft
(N폷m)
Plain Nut Locknut
Stud Nut
or Axle
Shaft
0.62-18
0.75-16
180-230 (244-312)
310-400 (420-542)
150-190 (203-258)
270-350 (366-475)
Studs All Install the coarse thread end of the stud
into the hub and tighten to the last thread.
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