86 10... Troubleshooting on multi-trailer
| Fault | Cause | Remedy |
|---|---|---|
| Trailer already brakes when foot is taken off accelerator | Shock absorber of overrunning equipment faulty | Replace shock absorber of overrunning equipment |
| Reversing sluggish or not possible | Brake system adjusted too strongly | Adjust brake system |
| NOTE: When automatic reversing is activated, there is a residual braking torque caused by the design. This results | Brake shoes jammed | Free brake shoes, replace complete brake shoes with brake shoe carrier if necessary |
| In slightly heavier overrunning. | Cables overtensioned | Adjust brake system |
| Handbrake effect too weak | Faulty adjustment | Adjust brake system |
| Faulty spring force accumulator | Adjust spring force accumulator | |
| Brake cables heavily contaminated, corroded or kinked | Free cables, replace if necessary | |
| Wheel brakes overheating | Brake system incorrectly adjusted | Adjust brake system |
| Overrunning equipment is sluggish | Lubricate overrunning equipment | |
| Brake cables heavily contaminated, corroded or kinked | Free cables, replace if necessary | |
| Cables overtensioned | Adjust brake system | |
| Wheel brakes contaminated | Clean wheel brakes | |
| Reversing lever of overrunning equipment jammed | Remove reversing lever, clean and grease with conventional BMW lubricants | |
| Braking effect too weak | Excessive play in brake system | Adjust brake system |
| Brake linings glazed, fouled by oil, damaged or worn | Replace complete brake shoes, clean brake drums, replace if necessary | |
| Overrunning equipment is sluggish | Lubricate overrunning equipment | |
| Brake cables heavily contaminated, corroded or kinked | Free cables, replace if necessary | |
| Jolting braking or starting off | Excessive play in brake system | Adjust brake system |
| Shock absorber of overrunning equipment faulty | Replace shock absorber of overrunning equipment | |
| Brake shoes jammed | Replace complete brake shoes with brake shoe carrier | |
| Brakes squeal or rattle | Wheel brakes contaminated or worn | Clean wheel brakes, replace brake shoes and/or brake drums if necessary |
| Out-of-round or banging brake drum | Replace brake drums | |
| Pad loose | Replace brake shoes | |
| Wheel-bearing play excessive | Replace wheel bearings | |
| Brakes pull to one side | Tire pressure incorrect | Correct tire pressure |
| Brake linings glazed, fouled by oil, damaged or worn | Replace complete brake shoes, clean brake drums, replace if necessary | |
| Suspension shock absorber has no effect | Replace suspension shock absorber | |
| Brake pads worn at angle | Wheel-bearing play excessive | Replace wheel bearings |
| Pads worn to less than minimum thickness | Replace brake shoes | |
| Towing attachment fails to engage after connection | Internal attachment parts contaminated | Clean and lubricate attachment |
| NOTE |
|---|
| When automatic reversing is activated, there is a residual braking torque caused by the design. This results |
MULTI-TRAILER TROUBLESHOOTING CHART
See also:
• 86 10 PLATFORM
• 86 21 HOOD