Parts Manual User Manual
HYDRAULIC CIRCUITS
8990417 6036 8-11
Figure 8-2 Boom Lift/Lower & Extend/Retract
Item Part Number Qty. Description Rev.
1 7139527 1 BOOM EXTEND CYL TUBE, (S/N 14834 thru 17190)
7139731 1 BOOM EXTEND CYL TUBE, (S/N 17191 thru 19988 & 0160002345 & After)
2 7139528 1 BOOM EXTEND CYL TUBE, (S/N 14834 thru 17190)
7139730 1 BOOM EXTEND CYL TUBE, (S/N 17191 thru 19988 & 0160002345 & After)
3 8760468 2 BULKHEAD LOCKNUT, 12
4 2716760 2 HOSE ASSY
5 2220567 2 ELBOW, 90 DEGREES
6 2755060 2 HOSE ASSY
7 2230046 2 BULKHEAD UNION, 90 DEGREES, (S/N 14834 thru 19988 & 0160002345
thru 0160012120)
8 2716778 2 HOSE ASSY, (S/N 14834 thru 19988 & 0160002345 thru 0160012120)
2755059 2 HOSE ASSY, (S/N 0160012121 thru 0160039337 excluding 0160024571 &
0160037911)
1001114202 2 HOSE ASSY, (S/N 0160039338 & After including 0160024571 & 0160037911)
9 8750040 5 TWIN CLAMP SET, 1.18DIA
10 8750025 2 TWIN COVER PLATE
11 8307004 AR LOCKWASHER, 5/16
12 8303757 1 HEX HD CAPSCREW, 5/16-18X2.50
13 8750026 2 STACKING BOLT, (torque to 11.6 - 21 lb-ft)
14 Ref RH REAR BULKHEAD PLATE, (see Figure 8-3 for details)
15 8307203 2 PLAIN WASHER, .312
16 8769128 1 TWIN COVER PLATE
17 8305006 2 HEX NUT, 5/16-18
18 2716784 2 HOSE ASSY, (Before S/N 0160039337 excluding 0160024571 & 0160037911)
2716784 1 HOSE ASSY, (S/N 0160039338 & After including 0160024571 & 0160037911)
19 2220695 2 MALE BRANCH TEE
20 2716675 2 HOSE ASSY
21 2220375 2 STRAIGHT CONNECTOR
22 2220655 1 ELBOW, 90 DEGREES, (swivel nut)
23 2220451 1 STRAIGHT CONNECTOR
24 2220578 1 ELBOW, 90 DEGREES
25 8770157 2 ELBOW, 90 DEGREES
26 8769139 1 TWIN CLAMP SET, .750 DIA
27 8307106 1 FLAT WASHER, .34X.69X.065
28 8310009 2 HEX HD CAPSCREW, 5/16-18X2.00
29 Ref EXTEND/RETRACT CYLINDER, (see Figure 9-1 for details)
30 Ref LIFT/LOWER CYLINDER, (see Figure 9-2 for details)
31 Ref MAIN CONTROL VALVE, (see Figure 9-7 for details)
32 Ref FIRST BOOM SECTION, (see Figure 2-1 for details)
33 8750017 1 TWIN CLAMP LOCKING PLATE, (S/N 14834 thru 19988 & 0160002345 thru
0160033303)
8750025 1 TWIN COVER PLATE, (S/N 0160033304 & After)
34 8310009 1 HEX HD CAPSCREW, 5/16-18X2.0, (S/N 14834 thru 19988 & 0160002345
thru 0160015051)
8303746 1 HEX HD CAPSCREW, 5/16-18X1-3/4, (S/N 0160015052 & After)
35 8750026 1 STACKING BOLT, (S/N 14834 thru 19988 & 0160002345 thru 0160033303)
8303757 1 HEX HD CAPSCREW, 5/16-18X2.50, (S/N 0160033304 & After)
104 2716785 1 HOSE ASSY, (S/N 0160039338 & After including 0160024571 & 0160037911)