Page: 4-51
WALKER MANUFACTURING COMPANY
July 2006
SERVICE INSTRUCTIONS
Blade Brake Band Adjustment
NOTE: The length of the actuator rod is adjusted by
disconnecting the bottom clevis and shortening or
lengthening accordingly. The standard pre-set length
of the actuator rod is set at the factory at 8-1/4 in.
(209 mm).
Brake Actuator Rod Adjustment
2. After adjustments are complete, check blade
brake action as described in CHECKING/SER-
VICING the Blade Brake Action in the Mainte-
nance Instructions Section. If blades do not
stop within five (5) seconds, check the following:
a. Recheck 1/8 in. (3 mm) gap between stop
block and chassis.
b. Make sure clutch and brake linkage are work-
ing freely (no binding).
c. Check the brake band lining.
d. Check the brake drum on the pulley. If exces-
sive wear is present, it will be necessary to
replace worn parts.
Blade Clutch (PTO) - Model MD
Clutch Engagement/Belt Tension
The clutch engagement and PTO belt tension are ad-
justed using the clutch actuator rod. Initially, after in-
stalling a new PTO belt, after 10 hours and every 100
hours thereafter, check and adjust for the three dimen-
sions in the clutch linkage as shown.
Adjust the bolt head clearance [1/4 to 3/8 in. (6 to 10
mm)] first, then adjust spring length. If adjustments are
needed more frequently than 100 hours to maintain the
linkage dimensions, it may suggest problems with pul-
ley wear or belt misalignment.
Clutch Linkage Adjustment - Disengaged
Blade Clutch
Idler Pulley
1/8 in.
(3 mm)
PTO Belt Tightener
Chassis
Stop Block
8-1/4 in.
(209 mm)
Bottom
Clevis
Locknuts
2-1/8 in. (54 mm)
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