Jacobsen AR3, Technical/Repair Manual

Page: 144 / 342

ELECTRICAL
4181384 First Edition 4-87
4
Hydraulic Oil Filter Switch
Removal and Installation
See Figure 4-86.
!
WARNING
1. Park the mower safely. (See “Park Mower Safely” on
page 1-7.)
2. Raise and support the seat platform.
Figure 4-86
3. Remove nut (2), and disconnect wire (1) from the
hydraulic filter switch (3).
4. Remove the hydraulic filter switch (3) from the filter
head (4).
Installation Notes
• Install the hydraulic filter switch by reversing the
order of removal.
• Apply Teflon
®
tape to the threads of the hydraulic
filter switch before installing.
Engine Oil Pressure Switch
Removal and Installation
See Figure 4-87.
!
CAUTION
1. Park the mower safely. (See “Park Mower Safely” on
page 1-7.)
2. Disconnect the battery negative (–) cables at the
battery.
3. Open the engine hood.
Figure 4-87
NOTE
Label all wires before disconnecting to ensure correct
installation.
4. Remove screw (1), and disconnect wire (3) from the
oil pressure switch (2).
5. Remove the oil pressure switch (2) from the engine
block.
The hydraulic system is under pressure, and the
oil may be hot!
• Always allow the machine to cool completely
before performing service.
• Always relieve pressure in the hydraulic
system before performing service.
• Always use appropriate safety equipment and
clothing to protect exposed skin and eyes
from high-pressure oil.
• Tighten all connections to proper
specifications before applying pressure.
• Never use bare hands to check for leaks! Oil
under pressure can penetrate the skin and
can cause gangrene within a few hours if not
properly removed. Use a piece of cardboard
to check for leaks.
Failure to follow appropriate safety precautions
may result in death or serious injury.
1
TN1157
2
3
4
Required Materials
Telfon
®
Tape
Engine components will become hot during
operation. Allow engine components to cool
before performing service.
1
TN1103
3
2