Lull 6K Service Manual - Manual (Page 283)

Boom and Transfer
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K 6-33
Boom Control Valve Disassembly
Fig. 6-20: Control Valve Components
(Ref. Fig. 6-20) The following procedure describes disassembly of the
control valve. All steps will need to be completed for both valves.
1. Loosen the two (2) socket head capscrews (Item 1). Remove the
capscrews and retainer (Item 2).
2. Remove the spool assembly (Items 3 thru 12) from the spool housing
(Item 13).
3. Unscrew the spool cap (Item 3) from the spool retainer (Item 11).
Remove cap and retainer from the spool subassembly (Items 4 thru 9 ) .
Note: Further disassembly of the spool subassembly (Items 4 thru 9) may not
necessary for cleaning purposes. Disassemble this subassembly only if
parts are damaged or there is excessive contamination.
4. Loosen and remove the two (2) socket head capscrews (Item 17).
5. Remove retainer (Item 16) and spool cap (Item 15) including O-ring
(Item 14).
# Description
1 Socket Head Capscrew
2 Retainer
3 Spool Cap
4 Socket Head Shoulder Capscrew
5 Flatwasher
6 Spring
7 Spacer
8 Flatwasher
9 Spool
# Description
10 O-ring
11 Spool Retainer
12 O-ring
13 Spool Housing
14 O-ring
15 Spool Cap
16 Retainer
17 Socket Head Capscrew
K
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17
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