7
MA-1055-102
03 Rev. 9/07
SAFETY
Control of Hazardous Energy
Brake Release Instructions
RC 5500 series trucks ship with spring applied/electri-
cally released brakes. Power must be applied to the
brake circuit to release brakes for towing/unloading.
Equipment required: Crown wire harness part number
139956-001 or equivalent.
Extreme care must be taken when using this method to
release the brakes. With brakes released on uneven
surfaces, vehicle will roll.
No battery installed method
1. Open vehicle "desktop" cover and disconnect har-
ness connector CA210 (near power fuses).
2. Plug harness (139956-001) into harness plug
JC210.
3. Apply 18-24 volts (DC) to harness to release
brakes.
4. Once vehicle has been moved, remove power to
harness and reconnect CA210.
Do not apply more than 28 volts (DC) to brake release
harness. Brake coil damage will occur.
Battery installed method
1. With battery unplugged from vehicle, unplug har-
ness connector CA210 (located under desktop
cover).
2. Plug JC210 into PC211 (located in same area) on
vehicle.
3. Plug battery into vehicle battery connector to re-
lease brakes.
4. Once vehicle has been moved, disconnect battery
and reconnect CA210.
Figure 16926
Tow Condition Note:
- Disconnect PC210 From JC210
- Connect PC211 Into JC210
Crown 2006 PF15396-3 Rev. 9/07
To Next Page
Loading...