Macdon 4000 Mower Conditioner User Manual download pdf (Page 26)

OPERATION

OPERATING VARIABLES (continued)

2. REEL SPEED

For best feeding of the crop into the

conditioning rolls, reel speed should be just

faster than ground speed. This gently sweeps

material across knife into the rolls.

The reel speed is factory set at 63 rpm. See

chart below for reel speed options.

position of:

rpm tine tip speed

mph (km/h)

yoke

plate (B)

shim (F)

53 6.6 (10.6) inside inside

56 7.0 (11.3) inside outside

60 7.5 (12.0) outside inside

63 7.9 (12.7) outside outside

In down and tangled crops, a faster reel speed

will result in a more even stubble height.

To change reel speed:

a. Loosen reel drive belt enough that it can be

removed from drive pulley (A) at main

gearbox. See "Reel Drive Belt" in

"Maintenance/Service" section for tension

adjustment procedure. Do not pry belt over

pulley.

b. Scratch an alignment mark on pulley half (A)

and yoke plate (B) to maintain roll timing on

re-assembly. Do not use pulley half (E) for

alignment.

c. Remove three bolts (C).

d. Collapse the driveline at the telescoping shaft

(D) and remove pulley half (E).

NOTE: Shim (F) is open one side and can be

removed once bolts are removed.

e. Re-assemble for desired reel speed,

positioning yoke plate (B) and shim (F) inside

or outside pulley halves as indicated in chart

above. Remember to align marks before

tightening bolts.

f. Replace belt and adjust belt tension.

53 RPM REEL SPEED

63 RPM REEL SPEED

REEL DRIVE PULLEY ASSEMBLY

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 72 73

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Macdon 4000 Mower Conditioner User Manual Page 26

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