Castle TSM-21 Diagnostic Manual - Manual (Page 43)

Castle Inc TSM-21 Diagnostic Manual v2 Page 43 of 63
5.20 Drive Cylinder SQE (Super Quick Exhaust) Valve 21.61
The Drive Cylinder provides the forward and back stroke to the Motor Carriage for the Router
and Pilot Drill phases of the cycle. If the Drive Cylinder mounted SQE (Super Quick Exhaust)
valves fail or become clogged, the machine may not complete one or both of these phases.
Test by rocking the carriage back and fourth by hand through the rear door. You should detect a
“puff” of air at the SQE valves when manually rocking the carriage.
Machines with serial numbers after 62480, do not have Drive Cylinder mounted SQE valves,
therefore, it is normal to detect a “puff” of air at the exhaust ports of the Router and Drill Solenoids
when manually rocking the carriage.
Note: All Solenoid Air Fittings are “Push In” connections. To remove an air line, push in the
plastic or metal rim of the fitting and pull the air line out. To re-install, push the air
line in until it meets resistance and then push in another 1/2”
The appearance of the solenoids may differ. See Appendix E, page 51 for equivalent illustration
for machines SN: 61076 and above.
5.20.1 TESTING STEPS:
1. Disconnect the “Air Out” lines from the Router and Drill Solenoids. See Fig 22. The other
end of the lines should remain attached to the Drive Cylinder SQE valves. See Fig 23.
“Push In” rim while
pulling out air line
Drill Solenoid
Drill Solenoid
Air OUT Line
Air IN Line
Fig 22