TEI TE260, Service And Maintenance Manual

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TE260 TROUBLESHOOTING
PROBLEM
I. Drill rotates but won’t hammer
J. Drill operates inefficiently
PROBABLE CAUSE
Leaky oil hose
Broken hammer
Lines are backwards
Hose to drill collapsed or kinked
Improper feed adjustment
Leaking oil hose
Worn bit
Hydraulic system out of adjust-
ment
Poor hole cleaning
Hole misalignment (bent drill rod)
Low drill pressure
Low feed pressure
Broken shank or drill rod
Thrust collar broken
Accumulator not charged correctly
REMEDY
Replace
Replace complete cylinder and
hammer assembly
Check supply and return lines
Check and replace hose
Adjust
Replace
Sharpen bit; check for loose or
broken carbides
Check pump pressure and flow
Check bit and steel for plugged air
passage
WARNING: DO NOT
HAMMER ON BIT OR
STEEL
Align feed properly
Set high pressure compensator to
2500 psi
Adjust pressure
Replace broken parts
Replace thrust collar. [check for
1/2”-1” (13-25mm) exposure of
shank guiding diameter beyond
front seal with shank pushed into
drill against the stop.]
Charge accumulator
Section 3 Page 3-8