TM 5-3810-206-35
KEY to fig. 3-67:
1
Capscrew (4 rqr)
11
Draincock
21
Cover (11 rqr)
30
Capscrew (5 rqr)
2
Flange (2 rqr)
12
Stud (2 rqr)
22
Packing (11 rqr)
31
Flatwasher (5 rqr)
3
Gasket (2 rqr)
13
Stud (2 rqr)
23
Washer (11 rqr)
32
Lipstick engine oil level
4
Crab (4 rqr)
14
Study (14 rqr)
24
Capscrew (11 rqr)
33
Stud
5
Washer (2 rqr)
15
Study (14 rqr)
25
Cover
34
Stud (12 rqr)
6
Nut (7 rqr)
16
Cap (7 rqr)
26
Capscrew
35
Nut (4 rqr)
7
Center crab
17
Nut (14 rqr)
27
Cap
36
Crankcase
8
Exhaust manifold
18
Cotterpin (14 rqr)
28
Gasket (5 rqr)
37
Stud (5 rqr)
(2 rqr)
19
Anchor arm (11 rqr)
29
Cover
38
Stud (24 rqr)
9
Gasket (2 rqr)
20
Seal (11 rqr)
10
Stud (4 rqr)
(5) Remove vibration damper (para 3-49).
3-63. Crankcase for Engine Model 687C-18-ES
(6) Remove camshaft (para 3-51).
a. Removal an d Disassembly.
(7) Remove piston and connecting rod (para 3-
(1) Drain coolant system and crankcase oil (TM
5-3810-206-12).
(8) Remove crankshaft and main bearings (para
(2) Remove all engine accessories, lubrication
filters, fuel filters, and air cleaners (TM 5-3810-206-12).
(9) Refer to figure 3-67 and remove all items
(3) Remove injection pump drive (para 3-32).
that require replacement (stud, draincocks, etc.).
(4) Remove rear plate and timing gear train
b. Cleaning, Inspection, and Repair.
(1) Clean and dry thoroughly before assembly.
3-80
