Textron Jacobsen AR-5 Technical/Repair Manual

5-12 4181383 First Edition
HYDROSTATIC POWER TRAIN
5
34. Move the traction pedal to the forward and reverse
positions and release the pedal. Pedal should return
to the neutral position.
When in the neutral position, there should be no
wheel movement.
35. Stop the engine and apply brake.
36. Repeat the procedure if any wheel movement is
noted.
37. Install and connect all components as noted prior to
adjustment.
Adjust Traction Pedal Neutral Switch
See Figure 5-7.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-5.)
2. Allow the traction pedal to return to the neutral
position.
Figure 5-7
3. Align the proximity switch:
To adjust the vertical alignment of the proximity
switch: Loosen two screws (1) and center the
proximity switch (5) with traction pedal pointer (4).
Tighten the screws.
To adjust the horizontal alignment of the proximity
switch: Loosen two screws (3) and slide the proximity
switch bracket (2) as needed, centering proximity
switch (5) with traction pedal pointer (4). Tighten the
screws.
4. Check the operation of the switch by depressing the
traction pedal so that the proximity switch (5) is
closed when the traction pedal is in neutral position
and open when the traction pedal is moved out of
neutral position. (See “Neutral Proximity Switch” on
page 4-74.)
Field Test Procedures
When a hydraulic system failure occurs, some simple
effective tests can be performed prior to using a test
instrument. The results of these tests can lead you to the
suspected component failure. More extensive test
procedures, using test instruments, are presented later in
this section. (See “Instrument Test Procedures” on
page 5-14.)
Preliminary Checks
Perform the following checks prior to beginning any tests.
1. Check the hydraulic oil reservoir for proper fluid level,
the presence of air or water, and unusual odor.
2. Check all lines and fittings for leaks. Tighten as
needed.
3. Eliminate all mechanical issues prior to starting
hydraulic tests.
Charge Pump Test
The charge pump supplies oil for charging the traction
circuit and traction pump.
If faults exist in the charge pump, proceed with an
instrument test for the charge pump. (See “Charge
Pressure Test” on page 5-15.)
Traction System Test
See Figure 5-8.
NOTE
Be sure tow valve is closed before beginning traction
system test.
1. Operate hydraulic system until oil temperature is at
120—150°F (49—65°C).
Figure 5-8
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Textron Jacobsen AR-5 Specifications

General

Brand	Textron
Model	Jacobsen AR-5
Category	Lawn Mower
Language	English