Jacobsen LF 3400, Руководство по запасным частям и обслуживанию

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3 ADJUSTMENTS
GB-12
3.7 MOW SPEED _____________________________________________________________
Cutting quality is better at speeds well below the transport
speed of the tractor. An initial mow speed of five to six mph
is set at the factory and should be satisfactory for most
cutting conditions. Local turf conditions however may
respond better to a different speed.
To set mow speed, loosen jam nut (A) and adjust stop screw
up to reduce speed, down to increase speed. Tighten nut to
hold adjustment in place.
Figure 3G
3.8 BELT ____________________________________________________________________
Inspect and adjust new belt after first ten hours of operation.
Adjust every 100 hours thereafter.
Adjust alternator pulley so belt deflects 1/4” to 5/16” (6 -8
mm) with a 20 lb. push at midpoint between pulleys. See
engine manual.
If tension is incorrect, loosen alternator mounting bolts (B)
and adjust alternator until proper belt tension is achieved.
Figure 3H
3.9 BRAKES _________________________________________________________________
Adjust brakes after replacing or servicing brake assembly, or
if pedal travel becomes excessive.
1. When installing new brake pads, burnish pads by driv-
ing tractor at mowing speed while applying a slight pres-
sure on brake pedal for about 5 seconds. Release and
repeat five times before making the final adjustment.
2. Fully loosen adjusting nut (E).
3. Disconnect brake return spring (See Item 14,
Illustration 7.1) at caliper.
4. By hand, pull cable behind adjusting nut (C) away from
pedal until brake pads just contact brake disk. Thread
adjusting nut (C) up until it contacts the mounting plate.
Tighten nut (E) to lock adjustment in place. Torque nut
(E) to 20 ft lb (27 Nm). Do not overtorque or turn cable.
5. Connect brake return spring. Repeat for second cable.
6. If brakes wear beyond point where they can be
adjusted by the cable, move brake bracket into second
set of holes provided (D) and complete adjustment
procedure.
7. Start tractor and check operation of brakes. Park
tractor on an incline (approx. 16.7° slope) and engage
parking brake. Brake must prevent tractor from rolling.
Adjust nut (C) as required.
Figure 3I
A
LF002
1/4” TO 5/16”
(6 TO 8 MM)
B
LF012
C
E
D
D