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Maintenance and Inspection
8.4 Air valve cleaning instructions
Occasionally pieces of scale or rust from the airline will
become lodged under the rubber seats of the air valve
causing air leakage. This leakage is easily detected since
lift will rise slowly when you connect the airline to the
quick coupler inlet even though the valve lever has not
been touched. If this occurs, the Inlet Side of the valve
needs cleaning. The lift may also lower slowly when you
disconnect the airline from the quick coupler even though
the valve lever has not been touched. If this occurs, either
the Inlet Side or both sides of the valve needs cleaning.
To clean, refer to Fig. 7 and follow these instructions: A.
Remove the adapter (2) from the Inlet Side of the air
control valve. Inspect screen (1) for foreign particles and
clean as required. B. Remove the spool (7) from the body
by pushing on spool (7) (from center toward the outside of
valve) with a piece of stiff wire or nail. C. Carefully examine
the valve seal (6) for any scale, dirt or foreign matter. If
foreign matter is embedded in the valve seal (6), remove
the screw (4) and cup (5) from the end of spool (7) and
clean the seal (6), turn over the seal and reassemble. D.
Lubricate the spool (7) with light chassis grease. E.
Reassemble the valve in this order: First, insert the spool
(7). Make sure that the spool with the O-Ring (8) is
reassembled on the Inlet Side. Second, insert spring (3).
Third, assemble adapter (2) into inlet side and plug (10)
into exhaust side of body (9). The valve should now
operate like new.
Exhaust Side
Fig. 7: Air valve exploded view
#
P/N
1
1-312-91004
2
1-274-12001
3
1-233-12001
4
0-202-10601
5
1-312-91003
6
1-390-10006
7
1-312-91002
8
0-390-00005
9
4-312-91001
10
1-275-21004
11
0235-21009
12
Note 2
Notes:
1.
Complete Valve Assembly, with Handle:
2-312-01005
Valve Assembly, Tee Handle
2-312-01006
Valve Assembly, Long Handle
2-312-01007
Valve Assembly, Winged Handle
2.
Handle part numbers:
12A
1-232-20053
Tee Handle
12B
1-232-20034
Long Handle
12C
1-232-20052
Winged Handle
ATJ-1000H | 11 | en
Inlet Side
Description
Qty
Screen
1
Adapter
1
Spring
2
Screw
2
Cup
2
Seal
2
Spool
2
O-Ring
1
Body
1
Plug
1
Roll Pin
1
Handle
1
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