Kunz MR55K - Manual (Page 13)

provide the appropriate braking force. If the spring length is to long it will be necessary to adjust
the brake stud closer to the belt. If the spring length is to short it will be necessary to adjust the
brake stud further away from the belt. To make brake stud adjustments loosen the bolt on the top
of the brake stud and slide the brake stud in the slot. When the proper disengaged spring length
is achieved, tighten the bolt on the top of the brake stud. For this procedure do not adjust the
lt tension.
, check to make
sure that there is at least 1/2” of clearance between the brake stud and the belt. If the clearance
3”
spring length. The spring length should only be changed when adjusting the be
Brake Stud Clearance:
This inspection is necessary to prevent over-braking. With the clutch engaged
is less than 1/2” then it will be necessary to adjust the brake stud away from the belt. Keep in
mind that the disengaged spring length must stay between 2-5/8” and 2-7/8” (For models with
long spring) and between 3-1/4” and 4” (For models with 4-1/2” long spring).
CAUTION: If brake stud is not set in correct position, under-braking or over-braking may
occur. If over-braking occurs, premature belt failure or a possible fire could occur due to
excessive friction and overheating.
Figure 7: Belt Pattern, Spring Adjustment, and Brake Adjustment
No Less Than 1/2” Clearance
Clutch Engaged
Brake Stud
With
0” With Clutch Disengaged
Clutch Engagement
Clutch Arm
Front
See Below For
Recommended Spring
Lengths
Engine
Initial Spring Length: 2” – 2-1/16” (Models with 3” long spring), 2-3/8” – 2-1/2” (Models with 4-1/2” long spring)
Running Spring Length: 2-1/4” – 2-3/8” (Models with 3” long spring), 2-5/8” – 3-1/8” (Models with 4-1/2” long spring)
Disengaged Spring Length: 2-5/8” – 2-7/8” (Models with 3” long spring), 3-1/4” – 4” (Models with 4-1/2” long spring)
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