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OPERATION
A - Pumping the oil from the Suction Oil Reservoir (12) into
the Main Oil Reservoir (continued)
7. The suction oil reservoir and the suction hoses are filled,
when bubble free oil flows out at the vent plug openings on
each main pump. Install vent plugs and tighten securely.
8. Check oil level in all main pump housings and vent the
hydraulic pumps according to page 497 in the Maintenance
Section 4.
9. Check oil level in the main reservoir. Fill up with new hydraulic
oil as necessary and install filler plug.
10. Start the engines and run without load to allow trapped air to
be removed from the hydraulic system.
DO NOT start the engines when the suction oil reservoir is
empty.
B - Pumping the Oil from the Return Oil Collector Pipe (13)
and back-pressure valve pipe (15) into the Main Reservoir
1. To empty the collector pipe (13), open cock (2).
2. Aerate the return oil filter chamber by opening the filler plug
on top of the main reservoir.
3. Switch on pump with switch (6).
4. Observe oil level sight gauge at the main oil reservoir. As
soon as the oil level remains constant the return oil collector
pipe is empty. Now switch off the transfer pump (4) and close
cock (2).
5. To empty the back-pressure valve pipe (15), open cock (3).
6. Switch on pump with switch (6).
7. Observe oil level sight gauge at the main oil reservoir. As
soon as the oil level remains constant the back-pressure
valve pipe is empty. Now switch off the transfer pump (4) and
close cock (3).
8. Install filler plug on top of the main oil reservoir.
DO NOT start the engines during servicing.
CAUTION
CAUTION
3.19 TRANSFER PUMP FOR HYDRAULIC OIL
285
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