install plug to prevent housing oil from
leaking out.
10. Remove axle housing fill plug (upper
plug) and fill with oil to plug hole.
11. To fill wheel ends, turn wheel so wheel
end plug is horizontal to axle shaft. Fill
wheel ends with oil to plug hole. Install
and tighten plug.
12. Remove, clean, and then reinstall drive
axle breather. Replace if required.
Axle Oil Specification & Capacity
SAE 85 W90 Specification API GL5-MIL
2105-B
Center Housing, 12 qts. (11.3L)
Reduction Housing, 1.8 qts.(1.75L)Each
End
9.3 AXLE REMOVAL
1. Provide adequate working space under
tractor. Raise tractor with jacks and sup-
port tractor with appropriate jack stands,
positioning to not interfere with axle re-
moval.
2. Remove wheel and tire assemblies.
Both front and rear axles
weigh approximately 1100 lbs. Support
axles properly to avoid injury.
3. Position axle jack under axle. Raise to
relieve pressure on attaching hardware.
4. Clean area around hose ends.
5. Relieve pressure in hydraulic system
and remove hoses. Plug ends of hoses
to prevent system contamination.
6. Remove axle u-bolts. Remove the outer
u-bolts first. After the other ones are re
-
moved, used the supplied u-bolt wrench
tool and a ½" breaker bar to remove the
inner u-bolt nuts. See figure 9-2.
NOTE: The u-bolt wrench can be pur
-
chased from NMC-Wollard, Inc., part
#42906
7. Lower axle jack until axle clears frame
and remove.
9.4 AXLE INSTALLATION
1. Position axle under tractor and raise into
position with an axle jack.
2. Attach axle to frame mounting with inner
u-bolts, nuts, and lockwashers first.
Tighten nuts to 332 ft-lbs. using the sup
-
plied u-bolt wrench tool and ½" drive
torque wrench. See figure 2. After install
-
ing the inner u-bolts, the outer u-bolts
can be installed with standard socket
and torque wrench.
3. Remove plugs from hydraulic hoses, be-
ing careful so no contamination enters
system. Reattach hoses to axle.
4. Lower axle jack and remove from under
tractor.
M200 MB4 Tow Tractor Manual No. 42975
PAGE 9-3
JULY 15, 2001
FIGURE 9-2. AXLE U-BOLT WRENCH
TOOL
WRENCH TOOL
INNER U-BOLT
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