Checks And Adjustments; Reel And Bedknife Inspection; Bedknife-To-Reel Adjustment - Textron Jacobsen InCommand PGM 22 Technical/Repair Manual

Checks and Adjustments

Reel and Bedknife Inspection

See Figure 8-2.
1. Park the mower safely. (See "Park Mower Safely" on
page 1-6.)
!
CAUTION
To prevent personal injury and damage to the
cutting edges, handle the reel with extreme care.
2. Check the reel bearings for end play or radial play. If
there is any abnormal movement of the reel, up and
down or side to side, adjust or replace components
as needed. (See "Reel Bearing Pre-Load
Adjustment" on page 8-15.)
Figure 8-2
3. Inspect the reel blades and bedknife to ensure good
sharp edges without bends or nicks.
a. The cutting edges of the reel blades and
bedknife must be sharp, free of burrs, and show
no signs of rounding off.
b. The bedknife and bedknife shoe must be
securely tightened. The bedknife must be
straight and sharp.
c. A flat surface of 1/32 in. (0.8 mm) minimum must
be maintained on the front face of the bedknife.
Use a standard flat file to dress the bedknife.
4. If wear or damage is beyond the point where the reel
or bedknife can be corrected by backlapping, it must
be reground.
5. Proper reel-to-bedknife adjustment is critical. A gap
of 0.001—0.003 in. (0.025—0.076 mm) must be
maintained across the entire length of the reel and
bedknife.
6. The reel must be parallel to the bedknife. An
improperly adjusted reel will lose its sharp edges
prematurely and may result in serious damage to the
reel and bedknife.
4157082 First Edition
7. Grass conditions will also affect the adjustment.
a. Dry, sparse conditions will require a wider gap to
prevent heat build-up and damage to the reel and
bedknife.
b. High-quality grass with a good moisture content
requires a closer gap (near zero).

Bedknife-to-Reel Adjustment

See Figures 8-3 and 8-4.
1. Inspect reel and bedknife before performing
adjustment. (See "Reel and Bedknife Inspection" on
page 8-13.)
1/32 in.
2. Start adjustment at the leading edge (1) of the reel,
(0.8 mm)
followed by the trailing edge. The leading edge of the
reel blade is the end that passes over the bedknife
first during normal reel rotation.
To prevent personal injury and damage to cutting
edges, handle the reel with extreme care.
3. Slide a feeler gauge or shim stock 0.001—0.003 in.
(0.025—0.075 mm) between the reel blade and the
bedknife. Do not turn the reel.
4. Loosen nut (2) and turn nut (3) counterclockwise to
bring the bedknife closer to the reel or clockwise to
back the bedknife away from the reel.
CUTTING UNIT
1
Figure 8-3
2
3
Figure 8-4
!
CAUTION
TN0081
8
TN0030
8-13