Dynapac CA 251 - Towing Procedures; Towing with Engine Working; Towing with Engine Not Working

22 CA 251 O251-1EN1
TOWING
The roller may be moved up to 50 m in the following way:
Press the reserve brake knob and stop the
engine. The machine may start to move
when the multi-function valve is loosened.
Chock the drums as a safety measure.
Unscrew the adjusting screws (1) three turns anti-
clockwise. Hold against the multi-function valve (2) if
necessary.
Pull out the reserve brake knob.
Allow the engine to idle.
The machine can now be towed.
A towbar must be used when towing
downhill.
Alternative 1
Towing short distance
with engine working.
Fig. 29 Towing
1. Adjusting screw
2. Multi-function valve (MFV)
1
Fig. 31 Counter braking
1. Direction of travel
2. Counter braking
3. Towbar
2
1
2
1
2
3
34 mm
(1.34 in)
Fig. 30 Rear axle
3. Lock nut
4. Adjusting screw
Chock the drum. The machine may start to
move when the multi-function valve (MFV)
is loosened and the brakes are released.
Carry out the above measures according to alternative
1, but the brakes must be disengaged mechanically
because the engine is not working.
Rear axle brake
Loosen the lock nut (3) and screw in the adjusting
screws (4) by hand until resistance increases, and
then one further turn. The adjusting screws are
located on the rear axle, two screws on each side of
the differential housing.
After towing
Remember to re-tighten the brake valve. Unscrew the
adjusting screw (4) to its initial position 34 mm (1.34
in) from the contact surface, and tighten the lock nut
(3).
Alternative 2
Towing short distance
with engine not working
4
3
4
3