SECTION V
PREVENTIVE MAINTENANCE
CHECK BRAKES, PAWLS AND CLUTCHES
CHECK TORQUE CONVERTER RESERVOIR
OIL LEVEL
At start-up each day, lift a near capacity load and perform an
operating cycle as explained in Section II, Machine Oper-
To check the torque converter reservoir oil level, proceed as
ation. Apply every brake, pawl and clutch and with each ap-
follows:
plication check for proper engagement. Adjust or repair any
1. Shut off engine. Be sure the machine is on level ground.
malfunctions which are found before placing the machine
2. Check the oil level by means of the site gauge on the
in service.
outside of the reservoir. See Figure 5A-4. The oil level
should be in the high end of the sight gauge.
The final criterion for correct adjustment and
3. Add oil, as necessary, to bring the level up to the appro-
operation is safe load handling.
priate level mark.
NOTE
INSPECT WIRE ROPE FOR DAMAGE
Do not mix hydraulic oil of different types or brands.
Inspect the wire rope, wire rope sockets, and any other wire
Use only approved oils listed in the lubrication chart in
rope fitting for damage. A wire rope inspection form has
Section Ill.
been provided at the end of this maintenance check to assist
the inspector. Additional wire rope inspection information
4. Loosen the drain plug at the bottom of the reservoir and
is provided in the Safe Operating Practices at the beginning
allow any accumulated water to drain. Tighten the plug
of this manual.
after all the water has drained.
INSPECT CRAWLER TRACKS
On a daily basis inspect the tracks for rocks or other foreign
materials and remove them. Also remove mud from the
tracks, before it hardens, so they can operate properly.
CHECK TRACK TENSION
Make a visual inspection of track tension. If the track is too
tight, a connection between two pads could break. On the
other hand, if the track is too loose it may ride off of the drive
idler during the travel operation. To prevent these occur-
rences from happening, track tension should be checked
daily and, if necessary, adjusted (see "C" maintenance
checks).
CHECK ENGINE TURBOCHARGER
Inspect the mountings, intake and exhaust ducting and
connections for leaks (see Figure 5A-3). Check the oil inlet
and outlet lines for leaks or restrictions to oil flow. Check for
unusual noise or vibration and if excessive, remove the
turbocharger and correct the cause.
Figure 5A-4. Torque Converter Reservoir
LUBRICATE CLUTCH BEARINGS
See Figure 5A-5 and lubricate with the type of grease speci-
fied in Section III. Two "shots" of grease from a grease gun
should be enough.
Figure 5A-3. Engine Turbocharger
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