John Deere rhino pd54 - Manual (Page 47)

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4. MAINTENANCE
4.33 HORN/BACK-UP
THIS VEHICLE IS EQUIPPED WITH A BACK-UP
ALARM. ALARM MUST SOUND WHEN
BACKING UP. IT IS THE DRIVER’S
RESPONSIBILITY TO OPERATE THIS VEHICLE
SAFELY. BE SURE BACK-UP ALARM AND HORN
ARE WORKING.
Inspect the sound decibel level of the horn and back-up
alarm daily and test weekly for proper dBA level (112
dBA). Test results should be recorded in the vehicle’s
maintenance file. If mud, dirt or other debris is forced
into alarm, clean and test to ensure proper operation.
4.33.1 Back-Up Alarm Switch
1. Remove control panel wrap.
2. To check for proper switch operation, connect
ohmmeter leads to the wire connections. The
back-up switch should be normally open in the
neutral position and normally closed when
shifted into reverse position. With the ignition
key in the on position, shifting into reverse
should actuate the back-up alarm.
3. Check the assembly for proper switch actuation,
smooth lever operation and all hardware for
tightness, then assemble the panel wrap and
hardware.
4.34 SCRAPERS
Prevent mud and debris from building up. If urethane
scrapers are worn or torn, replace.
Steel scrapers are adjustable. The scrapers should just
clear the drum and pads. If adjusting, be sure to check
that scrapers clear drum and pads all the way around
the drum. To adjust, loosen mounting bolts and slide
scraper in or out, check clearance and retighten.
WARNING