ELECTRICAL SYSTEM RT770E SERVICE MANUAL
3-14
Published 11/26/2014, Control # 447-05
Inspection
1. Visually check the switch for evidence of cracks,
damaged connections, or other damage. Replace
damaged switch as needed.
2. Check wiring for damaged insulation or damaged
connectors. Repair as needed.
3. Check all connectors for corrosion. Replace corroded
components as needed.
4. Perform the following check to determine switch
serviceability.
a. Using an ohmmeter, check for continuity between
the switch terminals with switch at ON or activated
position(s). Ohmmeter should register zero ohms
(continuity).
b. Place switch at OFF or deactivated position.
Ohmmeter should register infinity (no continuity).
c. Replace switch if it fails either part of the check.
Installation
1. Remove the rocker (3) from the old switch by holding the
switch by its sides in one hand and then squeezing the
left and right sides of the rocker with the other hand and
pulling up.
2. Orient the rocker (3) correctly relative to the new switch
(4), then install rocker in switch.
3. Install the switch (4) in the gauge/switch cover (6) by
pushing the switch (4) down through the top of the
gauge/switch cover (6) until the switch’s retaining clips
click in place.
4. Connect the wire harness to the bottom of the switch (4).
5. Install the right side cover (9) on the steering column.
6. Connect the wire harness to the ignition switch (10).
7. Install the left side cover (8) on the steering column.
8. Secure the gauge/switch cover (6) to the left and right
side covers (8, 9) using six screws (14).
9. Secure the left and right side covers (8, 9) together using
four screws (13).
10. Install the lever (12) and spacer that locks/unlocks the
steering column tilt/telescope function.
11. Pull the rubber boot (11) up and over the bottom of the
left and right side covers (8, 9).
12. Turn the battery disconnect switch to the ON position.
Check
1. Operate the switch per the Operator’s Manual. Verify
each of its functions works.
2. As needed, troubleshoot further any system or circuit
malfunction not corrected by repair or replacement of
the switch or associated wiring.
Ignition Switch Replacement
Use the following procedures and refer to Figure 3-9 when
removing/installing the ignition switch.
Removal
1. Ensure that the key switch has been in the OFF position
for 2 minutes.
2. Turn the battery disconnect switch to the OFF position.
3. Pull the rubber boot (11) off the bottom of the left and
right side covers (8, 9).
4. Remove the lever (12) and spacer that locks/unlocks the
steering column tilt/telescope function.
5. Remove the four screws (13) securing the left and right
side covers (8, 9) together.
6. Remove the six screws (14) securing the left and right
side covers (8, 9) to the gauge/switch cover (6).
7. Remove the left side cover (8) from the steering column.
8. Disconnect the wire harness from the back of the ignition
switch (10).
9. Remove the right side cover (9) from the steering
column.
10. Remove the locking nut that secures the ignition switch
(10) to the right cover (9) and remove the ignition switch
(10).
Inspection
1. Visually check the ignition switch for evidence of cracks,
damaged connections, or other damage. Replace
damaged ignition switch as needed.
2. Check wiring for damaged insulation or damaged
connectors. Repair as needed.
3. Check all connectors for corrosion. Replace corroded
components as needed.
4. Perform the following check to determine ignition switch
serviceability.
a. Using an ohmmeter, check for continuity between
the switch terminals with switch at ON or activated
position(s). Ohmmeter should register zero ohms
(continuity).
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