TM 5-3810-307-10
6-5.
PREPARATION FOR TOWING.
NOTE
Maximum towing speed with the drive shaft(s)
installed is 2 mph (3 kmh) for a maximum of 6 miles
(10 K). Maximum towing speed with both drive shafts
removed is 20 mph (32 kph).
a.
Engage swing lock pin with SWING LOCK lever (49, Figure 5-2) with boom over the front.
Then lower boom onto its cradle. Engage positive swing lock handle (6). Place SWING
BRAKE ON/OFF switch (18) in ON position.
b.
Connect tow bar of tow vehicle to crane towing lugs on rear of vehicle.
c.
Connect safety chains from towing vehicle to crane rear tiedown lugs.
d.
From carrier cab, pull PARK BRAKE control knob (45, Figure 5-1) to set crane parking
brakes. Ensure towing vehicle parking brake is also set.
e.
Ensure transmission shift lever (6) is in N (neutral). Ensure DIFFERENTIAL LOCK switch
(31) is in the center (unlocked) position.
f.
If engaged, disengage main hydraulic pump with pump disconnect control (5).
g.
Straighten both front and rear wheels. Ensure REAR STEER DIRECTION (49) in carrier
cab indicates that rear wheels are centered. If necessary, ensure FRONT AXLE
STEERING indicator (55, Figure 5-2) in superstructure cab indicates that front wheels are
centered.
h.
Ensure REAR AXLE STEERING LOCK switch (47, Figure 5-1) is in the LOCKED position.
NOTE
Skip the next step if the crane is to be towed for less
than 6 miles (10 k), and towing speed will not exceed
2 mph (3 kph).
i.
Remove front axle drive shaft. Refer to the -24-1-1 Service Manual.
j.
Disconnect the rear axle drive shaft at the rear axle differential end and secure on stowage
bracket. Refer to -24 Service Manual.
k.
If towing vehicle has a 120 psi (827 kPa) maximum auxiliary air supply, connect air hose to
AUX AIR IN connection at rear of crane. Charge crane air system using the auxiliary air
supply.
l.
Release crane parking brake by depressing PARK BRAKE control knob (45, Figure 5-1) or
if no auxiliary air supply is available, cage the rear axle air brake chamber springs to release
the parking brake.
m. If set for carrier steering, raise the lock lever and pull out the handle for superstructure cab
steering. Lower the lock lever to lock the control cable handle in place.
