1 Spring pin, 5/32 dia x 1 3/16 in.
6 Valve body
Section VIII. POWER DUMP AND SWING ASSEMBLY
in the numerical sequence as illustrated on
This section contains repair instructions for
the power dump and swing assembly. This as-
b. Dump Cylinder. Disassemble dump cy-
sembly consists essentially of a dump cylinder
linder in the numerical sequence as illustrated
and a swing cylinder, which hydraulically posi-
tion the drill guide at the desired drilling
angle in response to commands from the hy-
(1) Using a suitable spanner wrench, un-
and slide piston rod assembly (22)
with all parts attached, out of barrel
Remove the power dump and swing assem-
(2) Remove lock nut (9). and take all
parts off piston rod a s s e m b l y ( 2 2 )
from the nut end of the rod.
a. Power Dump and Swing Assembly. Dis-
(3) Discard all O-rings.
assemble the power dump and swing assembly