6-7
6
BOOM SUPPORTS 6.3
Boom Arm Supports
For safety while performing regular service or mainte-
nance work, the loader is equipped with boom supports.
(fig. C1823) The boom supports, when extended, prevent
the boom arm from lowering when servicing the
hydraulic system, controls or other repair work while the
engine is not operating.
The boom supports should be greased every 8 hours of
use and engagement depth should be checked every time
the supports are used.
1 Raise the boom arms, extend the boom supports and
allow the boom arms to lower onto the supports. Do not
pressure the hydraulic system against the boom supports.
2 Shut off the engine and engage the parking brake.
3 Measure the distance the boom support pins are pro-
truding past the inner boom arm plate. Proper adjustment
should have the support pin protruding past the inner
boom arm plate by 1/4 of an inch. (6.5mm) (fig. C1823)
4 Adjust the engagement depth by lowering the lif-
tarms completely. Remove the the red knobs from the pin
handles. Remove the 6 self-threaded screws that fasten
the dash panel in place, lower the dash panel to expose
the pin linkages.
5 Loosen the jam nut on the support pin linkage to be
adjusted. (fig. C5112)
6 Screw the pin in or out the amount necessary to get
the proper adjustment for support pin engagement on the
boom arms.
7 To remove the support pins and spring, slide pins to
the inside until they are clear of the bushings, then
remove handles from the spiring.
8 Apply 242 Loctite (blue) to the nut and tighten it
against the support pin when installing.
9 Lubricate the boom support pins and replace the dash
panels.
C5113
C5088
C5112
Jam nut
Handle
Pin
Handle
Spring
Pin
C1823
Boom support pin
Boom arm
plate
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