Lincoln Electric IM896 SPREADARC - Manual (Page 17)

D-1 MAINTENANCE D-1
SPREADARC
SAFETY PRECAUTIONS
ELECTRIC SHOCK can kill.
• Turn off power at the power source
disconnect switch before working
inside the equipment.
-----------------------------------------------------------------------
WARNING
PERIODIC MAINTENANCE
(See Figure D-1)
"V" Tracks and Bearings
Clean, inspect, and re-lubricate twice per year (more
often under severe duty applications) as follows:
1. Remove the four screws Item 1 holding the proximi-
ty sensor bracket Item 2 to the top cover Item 3 .
2. Remove the four screws Item 4 holding the top and
bottom track covers Item 5 in place and remove the
track covers.
3. Clean the four "V" groove bearings Item 6 and the
top and bottom "V" tracks Item 7 and inspect for
wear.
4. Provided the tracks are not severely worn, re-lubri-
cate the contact surface of the bearings and tracks
with a graphite or moly filled grease such as auto-
motive chassis grease and re-assemble.
NOTE: Do not lubricate the gear motor pinion
and gear rack.
If the wear on the inside edge of the top rack has
reached 0.040", either interchange the top and bottom
tracks if the bottom track is not severely worn, or
replace both tracks.
To remove the tracks:
1. Loosen the 1/2-13 hex head screws Item 8 which
hold the bottom "V" bearings Item 6 in place by
rotating the screws while keeping the eccentric nuts
Item 9 from turning.
2. Rotate the eccentric nuts to give maximum clear-
ance of the bearings in relationship to the tracks.
3. Lift the carriage to disengage the pinion gear from
the rack and remove. Set aside.
4. Remove the four screws Item 10 holding the control
box Item 11 in place. Maintain support for the con-
trol box in order not to strain any leads.
FIGURE D-1