Brake Switch / Blade Drive Switch Test; Brake Switch Adjustment - Sabre 1338 Gear Technical Manual

ELECTRICAL
BRAKE SWITCH / BLADE DRIVE
SWITCH TEST
Reason:
To make sure the brake pedal switch and blade drive
switch operate properly.
Equipment:
• Ohmmeter
Procedure:
1. Park machine on level surface and turn ignition
switch OFF.
2. Shift lever in NEUTRAL and park brake LOCKED.
3. Blade drive DISENGAGED.
4. Locate switch being tested as follows:
Brake switch is located under right side frame at
brake pedal bellcrank.
Blade drive switch is located under left side frame
at bottom of blade drive lever actuating arm.
5. Disconnect harness connector from switch being
tested.
A
D
6. Check continuity as follows using terminals shown
above.
• there should BE continuity between terminals (B
and C) when plunger is RELEASED,
• there should NOT BE continuity between terminals
(B and C) when plunger is DEPRESSED.
• there should NOT BE continuity between terminals
(A and D) when plunger is RELEASED,
• there should BE continuity between terminals (A
and D) when plunger is DEPRESSED.
Results:
• If continuity is NOT correct, replace switch.
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BRAKE SWITCH ADJUSTMENT

Reason:
To ensure proper that engine starts only when brake
fully applied.
Procedure:
1. Depress brake pedal and set park brake.
.
2. Check condition of both mounting rivets (C). If not
B
3. Disconnect harness connector and remove switch
C
4. Loosen switch bracket hardware (B).
5. Move switch until plunger (A) is about 3 mm (1/8 in.)
6. Check that switch does not bottom when brake
7. Tighten bracket hardware.
8. Check switch operation.
• Engine should NOT turn over or start when brake
pedal is not depressed.
• Engine should turn over and start when brake pedal
is fully depressed.
• If operation is not correct, test switch.
TESTS AND ADJUSTMENTS
A
C
tight, damaged, or improperly installed, they could
affect adjustment and function of start and safety
circuits. If rivets are bad, go to Step 3; if rivets are
good, go to Step 4.
assembly to bench vise. Remove rivets, as
necessary, using a 4.76 mm (3/16 in.) drill bit and
replace with 4.75 x 14.61 mm (0.187 x 0.575 in.)
aluminum pop rivets (M67899). Loosely install
switch and solidly connect harness connector.
from bottoming.
pedal fully depressed. Increase clearance if
needed.
B
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