PREVENTIVE MAINTENANCE
SECTION V
At each `C' Maintenance Check, perform all `A' and `B'
checks in addition to the following.
PERFORM MONTHLY LUBRICATION
Refer to the lubrication charts. in Section III, and lubricate
all the monthly lubrication points indicated with the type of
lubricant specified.
CHECK ENGINE BELTS
New drive belts will stretch after the first few hours of op-
eration. Retighten the fan drive, pumpdrive, and alternator
drive belts after the first 8 hours of operation. Thereafter,
check the tension of the drive belts monthly and adjust if
necessary. Too tight a belt is destructive to the bearings of
the driven part; a loose belt will slip.
Replace all belts in a set when one IS worn. Single belts of
similar size should not be used as a substitute for a matched
set; premature belt wear can result because of belt length
variation. All belts in a matched set are within 0.032" of
their specified center distances.
Remove the belt guard to replace the alternator belt.
Adjust the belt tension so that a firm push with the thumb,
at a point midway between two pulleys, wilt depress the belt
Figure 5C-1. High Pressure Filter (46Z410)
1/2-3/4 inch.
CHANGE HIGH PRESSURE OUTLET FILTER
5. Install a new filter element in the bowl. Fill the bowl with
the hydraulic fluid specified in Section Ill and screw the
The high pressure outlet filter is located in front of the hy-
bowl into the filter head.
draulic reservoir (see Figure 5C-1). The output of the con-
trol pump passes through the high pressure filter before
6. If the bypass indicator has been activated, push it down
entering the combination valve.
to reset.
7. Start the machine and check for leakage around the fil-
The filter is equipped with a bypass indicator located on the
ter bowl.
top of the filter. If the filter element becomes plugged, the
filter will bypass and the red indicator will move up and be-
CHANGE ENGINE OIL AND FILTERS
come visible. When the filter is bypassing it is inoperativeas
The engine full flow oil filter is located on the left side of the
a filter.
engine at the rear of the machine (see Figure 5C-2). The
The filter element should be changed every week for the
filter element should be changed at oil drain intervals.
first month of operation. Thereafter, change the filter
NOTE
monthly. To change the high pressure filter element, pro-
ceed as follows (see Figure 5C-1):
The engine oil and filter change interval should be
started with a monthly interval. The change interval
1. Lower the hook block to the ground and engage the brake
may then be gradually increased, or decreased, fol-
locks and pawls. Be sure the swing brake is set.
lowing the recommendation of an independent oil
2. Grasp the knurled area around the filter bowl and turn
analysis laboratory of the oil supplier (based on the oil
the filter bowl out of the head.
sample analysis) until the most practical oil change
period for the particular service has been estab-
3. Remove the filter element from the bowl and clean and
lished.
dry the bowl.
To change the engine oil and filter. proceed as follows (see
4. Check the O-ring seated in the filter head. Replace the O-
ring if it is damaged.
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