Mast Hinge Pin - Lubricate; Crosshead Roller - Inspect - Doosan GC15S-5 Operation & Maintenance Manual

Maintenance section
Cylinder Rod Extension-Adjust
NOTE : The following description is for forward tilt.
For cylinder rod back tilt, the collar should be
stationary by the tilt eye. If it is not, the O-ring inside
the collar may need to be replaced. To adjust back
tilt, spacers must be added or removed.
1. Check to make sure the tilt cylinders extend and
retract evenly.
2. If one cylinder continues to move after the other
cylinder has stopped in full forward or backward
tilt, an adjustment must be made to one cylinder.
3. To adjust the cylinder rod extension, move the
spacer to the rear and loosen the pinch bolt on
the clevis.
4. Turn the cylinder rod in or out of the clevis to
obtain the proper adjustment. Turning the rod
into the clevis shortens the stroke. Turning the
rod out of the clevis lengthens the stroke.
5. Tighten the pinch bolts to a torque of 95±15
N•m (70±10 lb•ft). Check the cylinder rods again
for even travel.

Mast Hinge Pin - Lubricate

1. Lower the forks and tilt the mast forward.
2. Lubricate the two fittings for the mast hinge pins,
one on each side of the mast.

Crosshead Roller - Inspect

1. Operate the mast through a lift cycle. Watch the
chains move over the crosshead rollers. Make
sure the chain is tracking over the rollers
properly.
Typical Example
2. Check for damaged crosshead rollers, guards
and retainer rings.
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