TEI TE260, Service And Maintenance Manual

Page: 21 / 35

TE260 TROUBLESHOOTING
PROBLEM
Q. Supply and return hoses are
shaking or bouncing
excessively
R. Water leaking from under
water swivel housing (water
flushing only)
S. Rotation housing overheating
T. Rapid chuck wear
PROBABLE CAUSE
Accumulators not charged
properly
Accumulator diaphragm is
ruptured (oil will leak from
charging valve when checking
pressure)
Blown water seals
Backhead fitting loose or packing
missing
Insufficient grease in rotation
housing
Shank bearing failed
Chuck driver broken or bearings
worn
Over rotation; over feeding
Misalignment
Dull bit
Insufficient lubrication
REMEDY
Charge accumulator diaphragm;
see chart on page 3-13
Change accumulator diaphragm
Replace water seals
Tighten fitting; replace packing
Add grease to rotation housing
using zerk fitting
Check shank for sideways motion
and replace bearings if required
Check and replace worn chuck
driver and bearings
Reduce rotation and feed load
Replace worn parts in drill string
Sharpen bit
Grease chuck end more
frequently
Section 3 Page 3-10