INTRODUCTION 777 SERVICE MANUAL
1-4 Published 10-01-2012, Control # 045-08
P558
21
P490
22
31 32
37
36 35 34 33
39
38
Item Description Item Description
1 Lower Boom Point 21 Hydraulic Tank
2 Wire Rope Guide (boom top) 22 Fuel Tank
3 #78 Boom 23 Pump Drive
4 Wire Rope Guide (boom butt) 24 Front Drum Pump
5 Mast 25 Right Crawler Pump
6 Boom Hoist Cylinder 26 Left Crawler Pump
7 Telescopic Boom Stop 27 Supercharge and Accessory Pump
8 Counterweight Handling Pivot Frame 28 Rear Drum or Luffing Hoist Pump
9 Upper Counterweight 29 Swing Pump
10 Engine 30 Boom Hoist Pump
11 Carbody Counterweight 31 Diagnostic Gauge Coupler *
12 Left Side Enclosure 32 Hydraulic Pressure Sender
13 Carbody 33 Hydraulic Filter 4 (rear drum)
14 Operator's Cab 34 Hydraulic Filter 3 (front drum)
15 Crawler 35 Hydraulic Filter 2 (accessory)
16 Drum Pawl 36 Hydraulic Filter 1 (supercharge)
17 Hydraulic Swivel 37 Shut-Off Valve (supercharge filter)
18 Front Drum 38 Catwalk (both sides of carbody)
19 Rear Drum 39 Stairs (both ends of carbody)
20 Lagging * See decal on bracket for pressure sensor identification.
FIGURE 1-1 continued
23
A969
24
25
26
27
28
29
30
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