Reel Bearing; Bedknife Adjuster Spring; Bedknife Adjuster Tension; Grinding Bedknife - Jacobsen Super LF 1880 67955 Safety, Operation And Maintenance Manual

9.14 REEL BEARING ___________________________________________________________

Any end play or radial play indicates bad bearings, a
weak tension spring, or a backed-off nut.
1. Check bearing housing mounting hardware. Tighten
or replace components as required. Carefully clean
threads with degreaser.
2. Apply a medium strength grade of Loctite to nut (J),
then thread nut onto the reel shaft until the nut is
1-27/32 in. (46 mm) from the end of the reel shaft.
3. Fill reel bearing housings with NLGI - Grade O
grease after adjusting spring.

9.15 BEDKNIFE ADJUSTER SPRING ______________________________________________

For proper operation, bedknife adjuster spring should be
compressed to a dimension of 1-7/16 - 1-1/2 in. (36.5-38
mm).
To adjust spring compression, loosen or tighten nut (R) to
obtain a distance of 1-7/16 - 1-1/2 in. (36.5-38 mm).
After adjusting spring, check reel to bedknife adjustment.

9.16 BEDKNIFE ADJUSTER TENSION _____________________________________________

NOTICE
Overtightening slotted nut (S) will make bedknife
adjuster rod (T) difficult to adjust.
Remove cotter pin (U) and fully loosen, then tighten
slotted nut (S) to remove clearance (no end play)
between components. Continue to tighten nut until next
slot in nut aligns with hole in bedknife adjuster rod (T).
Install new cotter pin.
Check torque required to rotate adjuster rod (T).
Maximum torque should be 24 in. lb. (2 ft. lb.) (2.7 Nm).

9.17 GRINDING BEDKNIFE ______________________________________________________

Bedknife can be lowered out of the reel for grinding
without completely removing the bedknife assembly.
1. Remove cotter pin (U), slotted nut (S), belleville
washer (V), shim washer (W-If required), and half
trunnion (X). See Figure 9P
4. Press down on adjuster end of rod (T) to rotate other
end of the adjuster out of the bedknife finger.
J
T
R
After adjusting nut, check reel to bedknife adjustment.
T
5. Rotate bedknife backing to access the reel and
bedknife for grinding.
6. After grinding, assemble bedknife using reverse
order of removal. Check adjustment of bedknife
adjuster tension (Section 9.16), and reel to bedknife
adjustment (Section 9.12).
ADJUSTMENTS
1-27/32"
(46 mm)
Figure 9N
1-7/16 to 1-1/2 in.
(36.5 to 38 mm)
Figure 9O
X
W
V
U
S
Figure 9P
9
J
GKV-11
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