Hookup - Komatsu 730E Operation & Maintenance Manual

OM3070
Operating Instructions

Hookup

1. When the good truck is in position, stop the
engine and wait two minutes to allow the
hydraulic system to bleed down. Ensure
hydraulic pressure has bled off before connect-
ing any fittings or hoses.
NOTE: Maximum hydraulic pressure is not to exceed
24 304 kPa (3,525 psi).
2. Connect the hydraulic supply hose to the supply
disconnect coupling (1, Figure 30-5).
NOTE: Failure to attach the return hose from the
disabled truck to the hydraulic pressure source could
cause the disabled truck hydraulic tank to overflow,
or potentially damage the hydraulic power source
due to lack of oil.
3. Connect the return hose to the return discon-
nect coupling (2).
4. Start the engine on the good truck. Check the
operation of the steering and brake system of
the good truck before moving the disabled
truck.
5. To disconnect the hoses, stop the engine(s) on
both trucks. Wait two minutes for the hydraulic
systems on both trucks to bleed down. Ensure
all hydraulic pressure has been relieved before
disconnecting the hoses.
FIGURE 30-3. BLEEDDOWN MANIFOLD
1. Supply Quick Disconnect
2. Return Quick Disconnect
3. Bleeddown Manifold
Operation - Section 30
Page 30-15