RT60 Rough Terrain Crane 07 - 47
7. 20 VEHICULAR OPERATION
The Rough Terrain Crane is capable of both off-road and limited on-road travel. The kind
of travel undertaken will determine how the carrier is operated.
Before moving the crane, either around the work site or between sites, carefully consider
the terrain type, road conditions and any hazards likely to be encountered en route. Think
the move through in advance and carry it out safely.
PRE-MOVE CHECK LIST
Before driving the crane to and from job site, ensure the following safety checks have been
made:
When properly adjusted the parking brake will hold this machine on a 20% grade, if
the tires have adequate traction. It is recommended that when parked on a grade
that the wheels be chocked.
a) Engage the swing lock;
b) Secure hook block to the bumper loop. If this is impractical, pull the anti-two block
weight up to within approximately 30 mm (1”) to the boom head, or until hook block
lightly contacts boom head. When carrying out these operations, the bypass key
switch should be switched on. Failure to pull the hook block up to the head when
traveling, or to secure it to the bumper loop, will result in excessive swaying of the
hook block and possible damage to crane;
Continuing to pull the hook block up after contact has been made may result in
damage to the boom head, sheaves and anti-two block switch.
c) Check whether the outrigger beams are secured with retaining pins;
d) Disconnect the main pump and disengage the PTO if the crane is to be driven more
than 2 miles (3.22 km);
e) Shift into high range (two wheel drive);
f) Check the tires for proper inflation pressure as indicated on the Standard Tire
Pressure Table;
g) Adjust the seat and mirrors for clear vision to the rear;
h) Check that the transmission oil pressure is within the normal operating range of 17.2
to 20.7 bar or 250 to 300 psi with 82.2 - 93.3 ℃ oil temperature and engine at idle.
Colder oil and higher RPM may create pressures over 20.7 bar. Low pressure may
indicate a worn charge pump, clogged filter, or low oil level.
Never move the carrier if the transmission oil pressure is below 17.2bar (250
psi). Low pressure will cause transmission slippage and consequent premature
failure of the clutch packs.
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