Lull 644B Parts Manual - Manual (Page 451)

ITEM PART NO. DESCRIPTION QTY. ITEM PART NO. DESCRIPTION QTY.
1 P28492 1 Control Valve Assembly
2 P91768 4 Nut, Special
3 P91771 2 Tie Rod, 7/16"-20
4 P91767 2 Nut, Special
5 P91770 1 Tie Rod, 1/2"-20
6 P32677 1 Housing, Outlet Section
7 P91783 2 Spring
8 P91784 2 Poppet
9 P91782 2 O-Ring
10 N.S.S. 2 Housing, spool
11 N.S.S. 2 Spool
12 P91781 4 O-Ring
13 P32931 2 O-Ring
14 P32930 2 Retainer, spool
15 P91776 4 Washer
16 P91778 2 Spacer
17 P91777 2 Spring
18 P21701 2 Shoulder Bolt, Socket Hd., 1/2" Dia. × 2"
19 P32929 2 Cap, Spool
20 P32927 4 Retainer
21 P01766 4 Capscrew, Socket Hd., 1/4"-20 × 4 1/2"
22 P32928 2 Cap, Spool
23 P01755 4 Capscrew, Socket Hd., 1/4"-20 × 1"
24 P91786 1 Plug
25 P91787 1 O-Ring
26 P91790 1 Relief Valve Assembly
(See Page 6.6.1 for Breakdown)
27 P91788 1 Housing, Inlet Section (Includes Item 28)
28 P91782 1 O-Ring
REF P31590 1 Seal Kit (Includes Items 9, 12, 13, 25, 28, and
P91808; Seal and Spring Kit for Relief Valve)
N.S.S. = Not Sold Separately
1044C-42 S/N 101–116
1044C-54 S/N 101–154
644B-42 S/N 101–207
644B-37 S/N 101–590, 592–666
844C-42 S/N 101–621
10K-42 S/N 101–106
10K-54 S/N 101–103
8K-42 S/N 101–220
6K-42 S/N 101–119
6K-37 S/N 101–317
Rev. 001
644B
6K
844C
8K
1044C
10K
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HYDRAULIC BOOM CONTROL VALVE ASSEMBLY (2-Spool) 6.5.1