PROBABLE CAUSE
SOLUTION PROBLEM
11. Saw starts but only front vise
functions.
IN MANUAL MODE
12. Head will not rise.
13. Head will not descend.
3.6
11a. Mode Selector Switch is in
"Neutral".
12a.
Head up limit switch is set
fully down.
13a. Feed Rate valve is fully
closed (pointer is set on "0"
or close to "0" in/min).
13b. Feed Force Limit is set too
11a. Select "manual" mode.
12a.
Readjust head up limit
switch.
13a. Turn Feed Rate Knob count-
er clockwise to open valve.
13b. Increase Feed Force limit to
at least 150 psi.
13c. Loosen pointer, turn knob
clockwise until it bottoms;
tighten pointer at "0".
low.
13c. Pointer is adjusted incor-
rectly.
14a. Observe pilot light(s) on
relevant valve, visible by
removing the side panel on
infeed base. If pilot light
related to inoperable function
fails to light, problem is
electrical.
14b. If pilot light related to inoper
able function does light,
problem may still be the coil
(see 14a. SOLUTION). If
problem remains it probably
results from dirt in the valve
spool. If the problem is
related to index forward or
retract, or head swing it may
also be dirt in the cushion
valve mounted near the
manifold.
14. Head still will not rise or fall,
or any individual function will
14a. In case of head and index
functions check operation of
related limit switches. Limit
switch buttons should oper-
ate freely and emit an audi-
ble click on both depress and
release. If not replace the
switch. Look for cause of
switch damage. To check
the switch unit itself, remove
the switch lid and wire
together the two terminals
closest to the wiring port. If
function now responds to
manual switch replace the
switch. If function still
does not respond then...
Remove the side
panel on the infeed to gain
access to the valves. Re
move coil retaining nut and
withdraw problem related
coil, replace it with any other
coil from the group. If the
problem remain it requires
the attention of a qualified
service person.
14b. Disassembly of hydraulic
valves should be undertaken
only by qualified service
personnel or those knowledg
able with hydraulic compo-
nents.
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