Upper And Lower Control Arm Inspection - Polaris 1999 Sportsman 400 Service Manual

REAR SUSPENS IOl\' 377
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A
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UPl' ER AND LO W ER
CONTRO L ARM INSPECTION
I. Check the welded sections on the control arms
(Figure 47) for cracks or fractures.
2. Carefully pry out and remove the pivot bushings
from the control arms. Refer to Figure 48 and Fig-
ure 49.
3. On the lower control arm, perform the follow-
109:
a. Carefully pry
QUi
and remove the hearing car-
rier bushing (Figure 50) from each side (F ig-
ure5\ ).
b. Withdraw the shaft (Figure 52) and check for
straightness. Replace
if
bent or corroded.
c. Inspect the shock absorber mounting br acket
(F igure 53) for wear or damage. Check the
mou nting
holes for cracks or elongation.
4 . Thoroughly clean the pivot holts, pivot bushings
and shaft in solvent and dry with compressed air.
5. Insert thc pivot bolt, or shaft (A, Figure 54) into
each pivot bushing (B, Figure 54, typical) and
check for a snug fit. The pivot bolts must rotate
freely but without any play. There are no specifica-
tions for ei ther p:U1; replace both parts
if
either is
worn or damaged.
6. Unscrew the grease fittings, Refer to Figu re 55
and Figure 56 . Clean out w ith so lvent and blow dry
with compressed air. Make
sure
the
fittings
are
clear. If
n e c e s s a r y,
clean
o u t
witha piece
o f w i r e .
In-
stall the grease
fitti ngs
and tighten securely.
7. Check the pivot bolts for straightness and dam-
aged threads.
II