 |
|||
|
|
|||
|
|
|||
| ||||||||||
|
|
 TM 5-2410-233-23
BEVEL GEAR AND SHAFT REPLACEMENT - CONTINUED
0102 00
INSTALLATION - CONTINUED
WARNING
Wear hand protection when handling hot components to prevent serious burns.
NOTE
Thickness of full shim pack is 0.119-0.125 in. (3.02-3.18 mm).
a.
Heat two bearing cones (24) to a maximum temperature of 275F (135C) and install on bevel gear shaft (19).
b.
Install bearing cups in bearing cages.
NOTE
Weight of bevel gear shaft is 46 lb (21 kg).
c.
Use a nylon sling and a suitable lifting device to install bevel gear shaft (19). Hand-tighten nuts.
d.
Install bearing cage (14) with two packages of shims (22), but without two 0.007 in. (0.18 mm) shims. The thick-
ness of a full shim pack (22) is 0.122 +/- 0.003 in. (3.10 +/- 0.08 mm). Install four bolts (20) with even spacing and
with no washers. Tighten bolts (20) to 100 lb-ft (135 Nm).
e.
Install bearing cage (15) with no shims (22). Install four bolts (20) with no washers in even spaces. Tighten bolts
(20) to 100 lb-ft (136 Nm).
f.
Tighten nuts (23) on bevel gear (16) to 215 lb-ft (160 Nm).
g.
Rotate bevel gear shaft (19) slowly for a minimum of 5 revolutions. This step will seat the roller bearings.
h.
Install dial indication (gage) against machined face of bearing cage (6). Align with vertical centerline of face of
bevel gear case.
NOTE
Ensure base of gage is attached to bevel gear case in an area that will not deflect. Suitable areas include the
top or bottom of case.
i.
Set gage reading to zero.
j.
Loosen bolts (20) on side opposite the gage.
k.
If deflection range is 0.0037 +/- 0.0007 in. (0.095 +/- 0.019 mm), bearing preload is set correctly. Continue to step
m. If deflections is not in range, adjustment of shim packs (22) is required. Continue with step l.
l.
If deflection is less than required, bevel gear shaft (16) is too loose. Remove some shims (22) and tighten bolts (20)
to 100 lb-ft (135 Nm). Repeat steps g through k. If deflection is more than required, bevel gear shaft (16) is too
tight. Add some shims (22) and tighten bolts (20) again to 100 lb-ft (136 Nm). Repeat steps g through k.
m.
Adjust clearance between bevel gear and pinion (backlash) by moving appropriate number of shims from one side
to other side in bevel gear case.
0102 00-6
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals