Castle TSM-21 Diagnostic Manual - Manual (Page 40)

5.18 Drill Solenoid Check 21.51
The Drill Solenoid controls air pressure to the Drive Cylinder, which provides the forward motion
of the Drill’s boring stroke. If the Drill Solenoid has stuck open, the drill will extend as soon as air
is attached to the machine, regardless of whether the power is turned on. If the Drill Solenoid is
clogged the Drill may not start or complete the pilot hole.
The appearance of the solenoids may differ. See Appendix E, page 51 for equivalent illustration
for machines SN: 61076 and above.
5.18.1 TESTING STEPS:
1.
Detach the air supply from the machine.
2.
Swap the "Air Out" lines between the Drill Solenoid and the Router Solenoid. See Fig 20.
Pilot Valve, up to
sn:61076
Clamp Exhaust
Clamp Solenoid
Router Solenoid
Drill Solenoid
Air OUT lines
Regulator Knob
Air IN lines
Router Feed Rate knob
Fig 20
Castle Inc TSM-21 Diagnostic Manual v2 Page 40 of 63