TEI TE260, Service And Maintenance Manual

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TE260 TROUBLESHOOTING
PROBLEM
K. Rapid chuck driver bushing
wear
L. Rapid failure of rotation
bearings
M. Oil leak around shank
N. Oil leak around backhead
O. Oil leaking from accumulator
charge valve
P. Hydraulic oil in blowing air
PROBABLE CAUSE
Worn and scored shank
Improper feed pressure
Insufficient lubrication
Contamination in chuck end of
drill
Bearings dirty
Dull bit
Misapplication
Shank seals in chuck end worn or
ruptured
Hammer seal failure
O ring on hammer bearing leaking
Hammer seal failure
Accumulator diaphragm ruptured
Valve worn
Check hydraulic and air system of
rig for leaks
REMEDY
Replace
Adjust
Grease chuck end more frequently
Clean parts; check front seal and
grout swivel seals, replace
Clean parts; blow all hoses before
assembly
Sharpen bit
Attempting too large a hole for
ground conditions and equipment
Remove chuck end cap and chuck
end; replace shank seals, ruptured
and worn parts
Replace
Replace
Replace
Replace diaphragm and recharge
accumulator
Replace
Repair or replace as necessary
Section 3 Page 3-9