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Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 5568
Experience:  17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
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Bmp 8500 no forward or reverse horn beeps steer only, Starts

Customer Question

Bmp 8500 no forward or reverse horn beeps steer only
JA: We'll do all we can to help. Tell me a bit more about what's going on so the Construction Equipment Mechanic can help you best.
Customer: Starts but won't go forward or rreverse
JA: Is there anything else the Construction Equipment Mechanic should be aware of?
Customer: Unhooked battery to replace sencer
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Construction Equipment Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Construction and Road Equipment
Expert:  Dan replied 1 year ago.

Hi my name is***** will try to help. First review this operation manual and let me know if you are getting any fault codes or other warning indicators. Any unusual noises when this stopped moving or did it happen after a shutdown and restart? Let me know

Operation Manual

Expert:  Dan replied 1 year ago.

See troubleshooting section

PDF pages 105 and on

After starting still no


Not waited for horn signal before


Press the horn button or wait fro the horn

signal before starting

Emergency stop push button

Switch operated? Display off, pull button


Switch defective? replace


Replace the transmitter

Spiral cable

Check the continuity of the individual cables

Check the cables for short circuit to the


Replace the cables

A 70 module (BLM)

Replace the module

Main wiring loom

Replace the main wiring loom

Expert:  Dan replied 1 year ago.

no travel move-

ments, steering

is still possible

The operator is inside the safety field

Leave the safety field

Transponder (in transmitter) has not

been taught

see point 4.15 Teaching the


Safety antenna front / rear

defective or not plugged in

Replace the antenna, check plug connec-


Distance between machine and transmit-


more than 30 m

Move closer to the machine

Safety field control defective or not

plugged in

Replace the safety field control or

check the plug connection

Transmitter defective

Replace the transmitter

Wiring loom for safety field antennas

Replace the wiring loom for safety field


Expert:  Dan replied 1 year ago.

Goto PDF page 110 for the fault code information and see what you have for codes. Let me know