MyBinding CHALLENGE EH-3C, Instruction Manual

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F.352-J/EH-3C DRILL/JUN 98
20
WARNING: DISCONNECT THE POWER AND LOCK IT OUT whenever working on the machine
unless the instructions specifically require the machine to be powered (see Power Lockout
Procedure,
page 4 ). Some of the following tests may require the machine to be operational
for checking and adjusting. Be very careful that tools and other people are clear of moving parts, and
that the drill is not accidentally operated while adjustments are being made.
CAUTION: Whenever repairing hydraulic components, loosen connections slowly to bleed
off any trapped pressure.
Problem Area to Check Solution
1. No power Power to machine Connect Power
Fuse blown Replace fuse
2. Lack of power Relief valve in pump may be bad Clean or replace relief valve or pump.
or have dirt in it.
Check oil level - may be low. Add oil.
Check voltage at machine - may Remove other machinery on line or
be low. provide a dedicated line.
3. Drill head won’t return Check lift springs - may be broken Pry up head, clean & oil shafts.
or stuck (replace if necessary).
Pull down shafts froze in frame. Pry up head, clean & oil shafts.
4. Drill head won’t come Check for broken lift spring - may Replace spring.
down be jammed.
Speed control valve out of adjustment Try to readjust, may have to replace.
or defective.
5. Spindle motor stalls Dull drills. Sharpen drills.
Check for low voltage. (See above).
Drive belt may be loose. Adjust belt tension. (See Adjustment
section of this manual).
Check for paper plugging drills Clean out hollow drills - We recom-
mend cleaning and soaking drills in
oil overnight.
TROUBLESHOOTING