Checking The Ball-Bearing Ring Pinion Lubricant Level; Draining The Hydraulic Oil Tank (Only For Machines In Which The Synthetic Biodegradable Oil Type Hees Is Used) - Komatsu PC110R-1 Operation & Maintenance Manual

MAINTENANCE PLAN
4.7.11.j CHECKING THE BALL-BEARING RING
PINION LUBRICANT LEVEL
IMPORTANT
• Carry out this check with the machine at rest and at the end
of work, that is, with the machine at operating temperature.
This check is visual and serves to verify the level of the grease
contained in the tank (1) that encloses the pinion (2) and the ball-
bearing ring (3). Remove the cover (4) from the upper structure
and check the level with a graduated ruler; the grease level must
reach half the height of the ball-bearing ring teeth (approx. 100
mm). Use a 17 mm spanner.
During this check, it is advisable to make sure that the grease is
clean and to change it if any impurities are observed inside it.
(See "4.7.13.e CHANGING THE BALL-BEARING RING PINION
LUBRICANT").
4.7.11.k DRAINING THE HYDRAULIC OIL TANK
(Only for machines in which the synthetic
biodegradable oil type HEES is used)
DANGER
• Retract the bucket and arm cylinder completely, extend
the cylinders of the two-piece boom completely, lower the
bucket teeth to the ground and, after stopping the engine,
release the residual pressures from the work equipment
circuits (by operating the controls more than once) and
from the tank (by slowly loosening the filling cap).
• Let the oil cool down until it reaches 40-45°C before carry-
ing out any maintenance operation.
• Immediately clean any area dirty with oil.
1 - Rotate the upper structure by 90°, in such a way as to leave
the lower part of the hydraulic oil tank free from the tracks.
2 - Retract the bucket and arm cylinder completely, extend the
cylinders of the two-piece boom completely, lower the boom
until the bucket teeth touch the ground.
3 - Lower the blade to the ground.
4 - Stop the engine and release the residual pressures from the
equipment circuits by shifting the controls more than once.
176
1
4
100 mm
4
2
3
RYA15880
RWA19350
RYA15890
RYA15900