General Maintenance
207
Model MMV Rev. 10/11
B. Top Boom Chain Tension Adjustment
(As required)
NOTE: Always perform the “Boom Chain Tension Check” starting on
page 203 before adjusting the boom chain tension.
1. Park the vehicle on level ground. Place the travel select lever in (N)
NEUTRAL, move the neutral lock lever to the (N) NEUTRAL LOCK
position, engage the parking brake switch and raise the boom to a
horizontal position. Retract the boom completely and turn the vehi-
cle OFF.
2. Adjust the top extend boom chains by tightening the locknuts (4)
located at the rear of the boom (5). Be sure each locknut is tight-
ened equally so that each chain maintains the same tension.
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