OP-755 Part 2 Pages 197-401 - Personal Page of GENE SLOVER

HOIST
NE~n
~~J
LOWER
l£G[N[l
Iol.AIN ~YST("'-
A-[N!lOISPl-"'C.E'-!;:N, • r.'!"~!t.,.)
RETUI'IN"lOW ~
01 ••0\.[ "'''OPI.Wl S'l'5TE!.I·'
lOll.,,, ••••r••SUII[ _ _ _ _ _ _ tE!:=£)
SUPPI..'I' 1Alfi( H(AD. C:=:-.....:l
241
M G y E o B
CRADLE
CYLINDER
SUPPLY
Fig. 45 - Hoisting Projectiles.
Beginning to hoist. Cradle Circuit Idling.
TANK
HOIST ~
CYLINDER
When the control handle is positioned to "Lower 11 the
cradle, high pressure is ported through check 11Ell
and restriction IlAIl. The latter limits oil f Lov and
piston starting movement until the piston uncovers
the main port. In this movement the other side of
the piston is open to the tank through check IIBIl and
restriction IlFIl. The end of the stroke (cradle open)
being buffed by that restriction.
When the control is posi tioned to "RaLse" the cradle,
check IlDIl and restriction "ZII function similarly to
start the return stroke, and check lIyll, restriction
ilGII, to buff cradle folding.
p
H