HALE AP, Technical Manual

Page: 121 / 177

109
Inspect and clean all components. See paragraph 5.7.7, Cleaning And Inspection Guidelines.
Clean mating surfaces of cover and gearbox. (Do NOT allow gasket material to fall into the gear-
box.) When opening a gearbox, as a minimum, inspect the following.
• Gearbox fluid, replace if water is in fluid. Refer to paragraph 4.4.6.1, Gearbox Oil Change.
•
Gearbox oil seals, if inspection indicates replace damaged/failed seals. Refer to para-
graph 5.8.4.13.1 (on page 102), or 5.9.2.1 (on page 121).
•
Gearbox bearings, if inspection indicates damage/excessive wear replace bearings. Refer to
section 5.9.2.
• Gear set (including keys), if inspection indicates damage/excessive wear replace keys. Refer
to section 5.9.2.
Cooling System Installation
A. Install gearbox cooling tube.
Install cooling tube into gearbox. 1.
a) Push cooling tube thru gearbox adapter openings.
b) Apply Loctite 580 to adapter threads.
c) Slide adapter (1/2 NPT to 3/8 compression) over cooling tube end (supply side)
and hand start adapter into gearbox threads.
d) Using 1–1/16-in wrench (or adjustable wrench), tighten (turn CW) adapter.
e) Repeat Step b) thru Step d) except for return side.
Install compression fittings. 2.
a) On adapters, install new compression rings and nuts. (One on each adapter ring
first.)
NOTE
Hold cooling tube in proper position until both compression nuts are tightened.
b) Using 5/8-in wrench, tighten compression nuts. (Do NOT over tighten nuts.)
c) Slide new compression nut and then a new compression ring onto each side of
cooling tube (supply and return).
d) Push supply side 90° elbow onto cooling tube until fully seated.
e) Using 16 mm wrench (or adjustable wrench), tighten (turn CW) compression nut
while using a 1/2-in wrench to hold elbow stationary.
f) Repeat Step c) thru Step e) above except for return side elbow.
B. Install gearbox cover as follows.
Align new cover gasket with top of gearbox. 1.
NOTE
Do NOT use grease to hold the gasket in place for ease of assembly.
Grease is NOT compatible with the fluid used in the Flex gearbox.
Align cover with screw holes in gearbox. 2.
Install cover screws as follows. 3.
a) Install one (1) washer on each cover screw.