Parts Manual Instruction Manual

ITEM PART NO. DESCRIPTIONQTY. ITEM PART NO. DESCRIPTIONQTY.
NOTES:
➊ For 644B-37; S/N 101–427, 430–484 and 644B-42; S/N 101–136,
Pump Unloader Valve Was Not Factory Installed. Use 39630C for Field
Installation Kit.
1 P00111 2 Capscrew, Hx., 5/16"-18 x 2 3/4"
2 39625B 1 Mounting Bracket, Unloader Valve
3 P00005 2 Capscrew, Hx., 1/4"-20 x 1"
4 P01308 2 Lockwasher, 1/4"
5 37158X 1 Hyd. Hose, 3/4" 4 & 5 Section Valves
P29755 - Hyd. Hose, 3/4" 6 Section Valves
P29164 - Hyd. Hose, 3/4" 7 Section Valves
6 P26101 2 Hyd. Hose, 3/4"
7 P19248 2 90° Elbow, O-Ring
8 37525X 1 Hyd. Hose, 1/4"
9 P33166 1 90° Long Elbow, O-Ring
10 P33165 2 90° Long Elbow, O-Ring
11 P19804 1 Tee, Swivel Run
12 P01309 2 Lockwasher, 5/16"
13 P01201 2 Nut, Hx., 5/16"-18
14 39615B 1 Valve, Pump Unloader
(See Page 6.12.1 for Breakdown)
15 37524X 2 Hyd. Hose, 1/4"
16 P17802 1 90° Elbow, O-Ring
17 P18958 3 Tee, O-Ring Branch
18 P24614 1 Connector, O-Ring (Long) 4 Section Valves
P17805 - Connector, O-Ring 5 & 6 Section Valves
P17802 - 90° Elbow, O-Ring 7 Section Valves
PUMP UNLOADER CIRCUIT (Natural Engines Only) 6.11.1
644B-42 ➊S/N 101–207
644B-37 ➊S/N 101–590, 592–666
Rev. 004
6K-42 S/N 101–119
6K-37 S/N 101–317
644B
6K
844C
8K
1044C
10K
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