Big Joe PDBB-20-T12, Эксплуатация, техническое обслуживание, список запасных частей

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9-2 901357
4. Remove the two cap screws and two lock wash-
ers securing the top of the inner mast to the ram
head.
5. Open the emergency lowering valve and, at the
same time, manually push the ram down as far as
possible. The chains will become slack and need
not be removed.
NOTE: A small amount of hydraulic oil will drain from
the system when the hydraulic line is discon-
nected. Use rags or suitable container to
catch the draining oil.
6. Disconnect hose (22, Figure 9-1 ) and remove
connector (17), reducer (16), relief valve (13) and
nipple (21) from flow control valve (14).
7. Remove flow control valve.
8. Install new flow control valve (14) with direction
arrow on flow control valve pointing toward lift cyl-
inder.
9. Reinstall nipple (21), relief valve (13), reducer
(16), and connector (17).
10. Reconnect hose (22).
11. Resecure ram head with the two cap screws and
lock washers.
12. Reconnect battery.
13. Check oil level on dip stick. If low, fill to ``FULL''
mark on dip stick with Big Joe hydraulic oil Part
Number 900855 .
14. Raise forks, then remove supports.
15. Check for leaks.
9-3. SUCTION LINE FILTER REPLACEMENT.
1. Lower platform fully to insure that all pressure is
relieved from hydraulic system.
2. Remove reservoir drain plug (40, Figure 9-1 ), and
drain oil into suitable container.
3. Remove clamp (38) and tubing (39) from nipple
(11).
4. Remove nipple (11) from filter (12).
5. Unscrew filter (12) from nipple (35).
6. Install new filter (12) on nipple (35).
7. Install nipple (11) on filter (12).
8. Install tubing (39) and clamp (39) onto nipple (11).
9. Clean the drain plug (40) thoroughly.
10. Re-install the drain plug.
NOTE: Refill only with Big Joe hydraulic oil Part
Number 900855 and only while carriage is
fully lowered. Refill until oil is to the ``FULL''
mark on the dip stick. Reservoir holds about
1-1/2 gallons of oil.
11. Remove reservoir vent cap (27), fill reservoir to
``FULL'' mark on the dip stick, and replace vent
cap.
9-4. LINE OR FITTING REPLACEMENT.
WARNING: Platform must be fully lowered before
performing maintenance on the hydraulic
system.
NOTE: Leaking hydraulic fittings can sometimes be
remedied by simply tightening the fitting. If
this does not remedy the leak, the fitting or
line must be replaced.
1. Fully lower the platform.
CAUTION: Hydraulic oil can dissolve the battery
case. Wipe off any spilled oil immedi-
ately.
2. Remove the reservoir drain plug and drain the
hydraulic oil into a suitable container.
3. Remove the leaking line or fitting and replace it
with a new one.
4. Clean the drain plug thoroughly.
5. Re-install the drain plug.
NOTE: Refill only with Big Joe hydraulic oil Part
Number 900855 and only while the carriage
is fully lowered. Refill until oil is to the ``FULL''
mark on the dip stick. Reservoir holds about
1-1/2 gallons of oil.
6. Remove the reservoir vent cap, fill the reservoir to
the ``FULL'' mark on the dip stick, and replace the
vent cap.