Sterling Trucks Acterra MX - Manual (Page 87)

2. On front-wheel-drive vehicles equipped with MT-
14, MT-17, and MT-22 axles, check the oil level
in the hubs.
2.1 The oil drain bore must be at the bottom
in order to check the oil level. See
Fig. 7 .
2.2 Remove the plug from the oil level check-
ing bore, and make sure the oil is level
with the bottom edge of the bore.
2.3 If needed, add oil until each axle hub is
filled to the bottom of the bore.
2.4 Install the plug in each oil level checking
bore, and tighten it firmly.
33–06 All-Wheel-Drive Front
Axle Oil Changing
1. Drive the vehicle until the axle oil is warmed,
then park it, and chock the rear tires.
2. Jack up the front axle until the wheels are off the
ground, then secure the axle on jack stands.
3. On vehicles equipped with an MT-8, MT-10, or
MT-11 front axle, drain the oil from the differen-
tial.
On vehicles equipped with an MT-14, MT-17, or
MT-22 front axle, drain the oil from the differential
and the hubs.
3.1 Remove the oil-drain plug from the differ-
ential, and allow the oil to drain. See
Fig. 6 .
3.2 If applicable, rotate each wheel until the
oil drain bore is at the bottom, then re-
move the drain bore plugs and allow the
oil to drain into a suitable container. See
Fig. 7 . If needed use a bent piece of
sheet metal to direct the draining oil so it
doesn’t splash on the tires.
4. Fill the differential and hubs (if applicable) with
new oil.
4.1 Install the drain bore plugs in each hub
and the differential, then tighten the plugs
firmly.
4.2 Remove the plug from the oil level check
bore in each hub and from the fill-and-
check bore in the differential.
4.3 Fill the hubs and differential until the oil
level within each is even with the bottom
of the fill-and-check bore.
4.4 Install the check bore plug in each hub
and install the fill-and-check plug in the
differential. Tighten all the plugs firmly.
5. Lift the front axle off the jack stands, remove the
stands and lower the vehicle to the ground. Then
remove the chocks from the rear tires.
33–07 Draw Key Nut Inspecting
Axles With Unitized Wheel Ends
Check the torque of the nut that holds the draw key
on the side of the knuckle. The torque should be 30
to 45 lbf·ft (41 to 61 N·m). See
Fig. 8 .
04/10/96
A
M H
f350148
1
2
A. Correct Oil Level
1.
Oil Level Checking
Bore 2. Oil Drain Bore
Fig. 7, All-Wheel-Drive Front Axle Hub, MT-17 Axles
Front Axle
33
Acterra Maintenance Manual, September 2002 33/5