Chapter 3
CRANE ENGINE REPAIR INSTRUCTIONS
Section I. CRANE ENGINE CARBURETOR ASSEMBLY
207-20).
47. General
b. Disassembly. Disassemble the carburetor in the
numerical sequence as illustrated on figure 4.
An updraft-type carburetor is used on the crane engine.
49. Crane Engine Carburetor Assembly Cleaning,
This side-intake, single-venturi carburetor is sealed,
protecting all internal parts from dirt and moisture. All
Inspection, and Repair
air for fuel air mixture and engine operation is drawn
a. Cleaning. Clean all parts with an approved
through the air cleaner.
cleaning solvent.
b. Inspection and Repair.
48.
Crane Engine Carburetor Assembly Removal
(1) Inspect all parts for cracks, bends
and Disassembly
a. Removal. Remove the carburetor (TM 5-3810-
1
Screw, -28 x 3/4 in.
34
Bushing
(6 rqr)
35
Bushing
2
Washer, lock, 1/4 in.
36
Plug
(6 rqr)
37
Pump
3
Carburetor body
38
Power jet valve
4
Gasket
39
Main jet adjustment screw
5
Idle adjusting needle
40
Washer, 3/8 in.
6
Idle needle spring
41
Main jet
7
Float axle
42
Washer
8
Float
43
Plug
9
Fuel valve
44
Washer, No. 8
10
Fuel valve seat
45
Power and accelerator jet
11
Fuel valve seat washer
46
Washer, brass, No. 8
12
Idle jet
47
Bowl drain plug
13
Screw, 8-82 x 3/8 in.
48
Intake drip plug
14
Venturi
49
Screw, 4-40 x 1/4 in.
15
Filter head
(2 rqr)
16
Filter head washer 50
50
Washer, lock, No. 4
17
Filter element
(2 rqr)
18
Vacuum channel screw
51
Choke plate
19
Throttle plate screw
52
Nut, 6-2
(2 rqr)
53
Washer, lock, No. 6
20
Throttle plate
54
Screw, 6-82 x 7As in.
21
Throttle shaft
55
Choke bracket
22
Pin, cotter, A6 x 3/4 in.
56
Nut, 6-82
23
Spring retainer
57
Screw, 6-82 x 7/16 in.
24
Lever spring
(2 rqr)
25
Screw, 10-24 x 9/16 in.
58
Tube clamp
26
Throttle clamp lever
59
Bracket screw
27
Shaft driver
60
Choke bracket
28
Throttle stop pin
61
Choke shaft
29
Screw, 6-32 x 5/8 in.
62
Plug
29
(Screw, 6-82 x 5/8 in.
63
Washer, brass, 1/4 in.
(2 rqr)
64
Discharge jet
80
Stop lever pin
65
Washer, nonmetallic, 1/4 in.
31
Throttle stop lever
66
Well vent jet
32
Shaft seal retainer
67
Check valve
33
Throttle shaft seal
68
Fuel bowl
Figure 4. Crane engine assembly, exploded view.
TAGO 5030A
32
