STEP 1.
DRIVE OUT PIN AND PIN KEEPER.
(1) Service. Lubricate the fairlead with the type of
STEP 2.
INSTALL NEW TEETH.
lubricant listed in the current LO. at the interval listed.
STEP 3.
IF NECESSARY, DRIVE OUT ADAPTER
Inspect for excessive grooving of the fairlead sheaves or
KEEPER AND ADAPTER AND REPLACE.
rollers and report any deficiency to organizational
maintenance. .
(2) Replacement. The fairlead is mounted on a bracket
located on the front of the revolving frame. Refer to
3-29. Backhoe Attachment
a. Service.
Installation and reeving of the
backhoe attachment is covered in paragraph 2-8. Keep
the backhoe attachment lubricated in accordance with
the current LO. When the attachment is not in use, it
should be placed on wooden blocks, if possible, and
should be cleaned, using a cleaning solution.
All
machined or finished surfaces must be kept lubricated as
required to prevent rust.
b. Dipper Tooth Replacement. Dipper teeth must
be replaced when they are worn to about one third their
original length. Refer to figure 3-18 and replace dipper
teeth.
3-30. Piledriver Attachment
a. Service. Keep the piledriver attachment clean
and lubricate in accordance with the current LO.
ME 3810-288-12/3-25
b. Replacement. Refer to paragraph 2-7 and
Figure 3-18. Bucket teeth. removal and replacement.
replace the piledriver attachment.
(3) Clamshell bucket replacement. Refer to
3-31. Inspection, Service and
Adjustment of
(Cables)
(4) Dragline bucket replacement. Refer to
a. Inspection. Daily inspect all cables used for
boom or load handling. The inspection is to determine if
g. Tagline
Service, Adjustment,
and
the cable is suitable for further is. The recommended
Replacement. The operator/ crew personnel's service.
method is to determine the degree of damage at the
adjustment. and replacement procedures for the tagline
worst rope lay. By definition, a rope lay is the distance
are as follows:
along the rope in which one strand makes one complete
(1) Service. The tagline winder must be
turn around the rope. Any of the following conditions
kept clean. It must be lubricated in accordance with the
should indicate to the operator that the cable needs
current LO. Be sure the level of lubricant is checked at
replacing.
least semni-annnally.
(1) If the core shows through more than one
(2) Adjustment.
The tagline must be
pair of strands.
capable of providing sufficient tension to keep the
(2) If kinking damage is severe.
bucket from turning and fouling the clamshell hoisting
(3) If there is evidence of improper
and closing lines. The approximate tension/ required on
lubrication. This will usually cause other defects.)
this tagline is 195 pounds. To increase tension, pull the
(4) If the cable has come into contact with
cable out enough to allow an additional wrap on the
an electrical circuit or has been overheated in some
cable drum. The amount of tension can be varied to suit
other manner.
individual operator preference.
The recommended
(5) If there is a serious reduction in rope
tension is from two to four wraps on the tagline drum.
size.
(3) Replacement. The tagline winder is
(6) If there is evidence of "bird-caging".
mounted to the crane boom as shown in figure 2-13.
This condition of suddenly increased size is usually
Mount the tagline winder at the tip of the boom base
section so that a line drawn through the cable drum lines
up with the boom point.
h. Fairlead Service and Replacement.
3-20
