OP-755 Part 2 Pages 197-401 - Personal Page of GENE SLOVER
OP-755 Part 2 Pages 197-401 - Personal Page of GENE SLOVER
OP-755 Part 2 Pages 197-401 - Personal Page of GENE SLOVER
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.250<br />
(f) Before operating the hoist under projectile<br />
loads verify adequacy <strong>of</strong> rack paid and tube pawl<br />
lubrication.<br />
(g) Electric motor direction rotation. - If either<br />
power unit is new, or has been disassembled,<br />
or if any lead to either motor or controller<br />
has been discormected, it is imperative to<br />
verify the motor direction <strong>of</strong> rotation before<br />
operating. This is particularly importa:p.twith<br />
respect to the cradle operating motor as the<br />
two vane type pumps driven by that unit will<br />
be damaged if reversed.<br />
(h) Pressure tests. - Gauge checks should be performed<br />
quarterly to verify correct pressures<br />
in the pawl operating circuits.<br />
42. Hydrau l t c 0 t l . - The hydraulic oil to be used in<br />
both the main system and the cradle operating system is that<br />
specified in O.S. 1113. Whenreplacing or when replenishing<br />
oil pour through a fine meshwire strainer <strong>of</strong> at least 120 wires<br />
to the inch. Newassemblies should be drained after fLf teen<br />
hours operation and should then be thoroughly flushed clean<br />
and refilled with fresh oil or carefully salvaged oil. Perform<br />
test inspection and analysis <strong>of</strong> oil sample from each system<br />
monthly. If there 1S evidence <strong>of</strong> sludge, water or acidity,<br />
drain, flush and refill with fresh oil-. The amount <strong>of</strong> oil required<br />
to fill each cradle operating system (including the powder<br />
hoist upper door circuit) is 35 gallons. The system is<br />
self venting. The amount <strong>of</strong> oil required to fill the main hoist<br />
system is 25 gallons. This circuit requires venting at the<br />
needle valve in ·the upper cylinder head.<br />
43. BUffer fluid. - The liquid to be used in the cradle<br />
buffer is recoil cylinder liquid as specified in the latest<br />
revision <strong>of</strong> O.D. 1914.<br />
44. Lub r i c a t ion. - All projectile hoist assemblies must<br />
be lubricated with the lubricants and according to the frequencies<br />
specified on the lubrication chart.<br />
45. Bx er c i se checks. - Exercise each cradle operating<br />
assembly including the pawl control mechanisms at least once<br />
weekly. The operation must include check <strong>of</strong> response action<br />
to verify normal functioning <strong>of</strong> all control, indicatcr and pawl<br />
operating devices.<br />
46. Installation and<br />
overhauling or servicing the<br />
instructions <strong>of</strong> chapter XV.<br />
maintenance. - Wheninstalling,<br />
hydraulic units comply with the
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