TM 55-1520-240-23-6
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BLEED NO. 1 OR NO. 2 PTU MOTOR AND PUMP (WITHOUT EXTERNAL
POWER)
(Continued)
7-344
a.
Open cap (8) of fill module (9). Fill module
with hydraulic fluid (E199). Close cap.
b.
Set handle (10) of selector valve (11) to
position 1. Operate pump handle (12) until
utility reservoir/cooler indicator (13) indicates
full.
c.
Loosen clamp (14) and disconnect hose (15)
from bleed valve (16) of reservoir/ cooler (7).
d.
Connect bleed hose (17) to valve (16).
e.
Open valve (16). Let fluid flow until air-free.
Use container and cloths (E120) to catch
spilled fluid.
f.
Close valve (16). Remove bleed hose (17).
Install hose (15).
g.
Repeat steps a and b.
Stand clear of ramp when lowering.
Ramp drops by gravity.
If a lot of air is in the circuit, the ramp
may drop fast enough to be damaged
as it strikes the ground. To prevent
damage, place padding on the ground
in the contact area.
8.
Move ramp control handle (18) to DN. Lower
ramp (19) fully.
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