HALE AP, Technical Manual

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124
Input Shaft Installation
A. Prepare new input shaft for installation.
Install drive side bearing on input shaft. 1.
NOTE
The preferred method of assembly is to heat the bearing and cool the input shaft to
allow a slip fit. Using a bearing heater, heat bearing to 250
℉
(121 °C) (Do NOT ex-
ceed 8 hrs.). Using dry ice in an alcohol bath, cool shaft to –65
℉
(–54 °C) (Do NOT
exceed 1 hr.). Use appropriate PPE to handle/assemble bearing and shaft.
a) Lubricate input shaft and bearing center bore with gear oil.
b) Configure press bolster plate with opening/bore hole or cribbing so shaft passes
thru bearing. (NOTE: The plate must support the inner race to prevent bearing
damage during assembly, bearing-to-shaft is an interference fit.)
c) Place bearing on press bolster plate.
d) Place drive end of input shaft (threaded hole for input flange toward bearing)
squarely into bearing.
e) Press input shaft into bearing until seated against shaft collar.
NOTES
If the preferred method or a press is NOT available, use a 3 inch long piece of 2-in
DOM steel tube (Use ONLY 0.188 wall tube.) and a dead-blow hammer to assemble
the bearing and shaft. Grease the shaft and bearing inner bore to aide in assembly.
Clean parts thoroughly after assembly; do NOT allow grease to enter the gearbox.
Do NOT strike the shaft or the outer race of the bearing with a hammer to assemble
the parts.
Install drive gear key. 2.
NOTE
Inspect key and drive gear keyway for damage and/or burrs. Repair or replace as re-
quired before proceeding.
a) Partially fill input shaft keyway with gear oil.
b) Install key in input shaft keyway (gear oil holds key in place).
B. Install input shaft.
Using gear oil, lubricate bore of pump side bearing, entire pump side of 1.
input shaft, outside of drive side bearing, and drive side bearing bore in
gearbox.
NOTES
Both keyways on the input shaft are in line with each other.
Do NOT allow the key to fall into the gearbox while installing the shaft. Keep keyways
up to prevent key from falling.
Place input shaft and key (pump side of shaft) into gearbox, align key with 2.
drive gear, and drive gear keyway.
Push input shaft through drive gear until it stops. 3.