Brakes; Neutral Adjustment - Jacobsen AR-522 Dealer's Manual

4.4

BRAKES _________________________________________________________________

Adjust brakes after replacing or servicing brake assembly, or if
pedal travel becomes excessive.
1. When installing new brake pads, burnish pads by driving
mower at mowing speed while applying a slight pressure
on brake pedal for about 5 seconds. Release and repeat
five times before making the final adjustment.
Fully loosen adjusting nut (E).
2.
Disconnect brake return spring (See
3.
Illustration 8.1) at caliper.
By hand, pull cable behind adjusting nut (C) away from
4.
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 over torque 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.
4.5

NEUTRAL ADJUSTMENT ___________________________________________________

Neutral adjustment can only be made at the drive pump.
The Neutral adjustment is preset at the factory on all new
mowers and replacement pumps. Further adjustment is not
required unless the pump has been disassembled for repair or
service.
To adjust Neutral:
1. Disconnect traction pedal linkage from pump.
Place mower securely on jack stands so All wheels are
2.
raised off ground.
Check that tow valve (H) is closed
3.
4. Engage parking brake and set mow switch to Neutral.
Make sure Neutral switch at traction pedal is closed.
(Figure 4E - M). Distance between the sensing portion of
switch and metal pointer (M) must be between 1/16 and 1/
8 in. (1.5 and 3 mm).
Loosen screws (G) holding pump lever bracket just
5.
enough so it can be moved. Start engine, disengage
parking brake, and observe wheels. Adjust bracket (F) in
slotted holes until wheels do not turn. Turn off engine and
tighten bracket in place.
6. Connect traction linkage. When connecting linkage at
traction pedal make sure pointer on traction pedal bracket
is centered over Neutral switch (M -Figure 4E).
7. Start mower and check operation of brakes. Park mower
on an incline (approx. 16.7° slope) and engage parking
brake. Brake must prevent mower from rolling. Adjust nut
(C) as required.
Item 14,
7. Start engine and check operation of traction pedal.
Wheels must not turn when pedal returns to Neutral and
lamp 5 on controller should light, see Section 5.
ADJUSTMENTS 4
D
D
E
F
G
C
Figure 4C
H
LF014
Figure 4D
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