Operation
69
C2500CB-OM-EN-16
5.19 Towing
Should the need arise to Tow the truck it is necessary to first apply the bypass condition
on the hydrostatic pump in order to prevent it from being damaged. It is also necessary
to mechanically release the park brake on each of the wheel motors. The truck should
only be towed if it has broken down in a location where it is deemed to be a safety
hazard.
Hydrostatic Drive Bypass Function
To activate the bypass function:
1. Switch off the engine.
2. Raise the bonnet from the right hand side of the truck to gain access to the high-
pressure relief valves – circled in red – on the drive pump (
A
).
3. Loosen the lock nut (
2
) by turning it counter-clockwise one half rotation with a
13mm spanner.
4. Use a 4mm Allen key to turn the screw (
1
) clockwise until it is against the spring
disc. This is apparent by the increased resistance. Then turn the screw (
1
) one
half turn into the spring disc.
5. Tighten the lock nut (
2
) clockwise with a torque of 22 Nm (16 ft.lb).
6. Repeat steps 3 to 5 on the opposite side.
To deactivate the bypass function:
1. Loosen the lock nut (
2
) with a 13mm spanner, then turn the screw (
1
)
counter-clockwise with a 4mm Allen key to the stop.
2. Retighten the lock nut (
2
), turning clockwise with a torque of 22 Nm (16 ft.lb).
3. Repeat steps 1 and 2 on the opposite side.
Caution
Only tow the truck out of the immediate danger zone. Longer towing
distances and high towing speeds will damage the drive pump.
The maximum permissible towing speed of 2 km/h should not be exceeded.
During and after towing the drive pump will be hot. Wear protective clothing.
Note
Switch off the bypass function immediately after towing.
1
2
A
