TM-9-2815-200-35
ENGINE, WITH CONTAINER:TURBOSUPERCHARGED, DIESEL ,FUEL INJECTION ,90-DEGREE “V” TYPE, AIR - COOLED ,12 - CYLINDER , ASSEMBLY ;MODELS AVDS-1790-2M (2815-856-4996), AVDS-1790-2A AND AVDS-1790-2AM (2815-856-9005)
TECHNICAL MANUAL; DIRECT SUPPORT, GENERAL SUPPORT AND DEPOT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS
TM-9-2815-200-35 - Page 402 of 779
Table 6-23. Crankshaft Damper and Oil Filter Housing Standard and Oversize Stud Identification
Fig.
No.
B-6
6-113
6-113
6-113
6-113
6-113
6-113
6-113
Ref. letter
or No.
50
A
B
C
D
E
F
G
Setting
height
7/ 8
15 / 16
25/3 2
7/ 8
27 / 32
(oil pressure
access cover)
1-1 / 16
1-3/ 16
(fuel pump
check valve
bracket)
1
No.
req’d.
4
8
2
12
2
6
2
8
Stud size
and length
5/16-18(3/4)
x
5/16-24(19/32)
x
1-1/2
(STD)
(0.003 in. OS)
(0.007 in. OS)
(0.012 in. OS)
3/8-16(51/64) x 3/8-24(11/16) x 1-5/8 (STD)
(0.003 in. OS)
(0.007 in. OS)
(0.012 in. OS)
5/16-18(11/16) x 5/16-24(9/16) x 1-5/16 (STD)
(0.003 in. OS)
(0.007 in. OS)
(0.012 in. OS)
5/16-18(3/4)
x
5/16-24(19/32)
x
1-1/2
(STD)
(0.003 in. OS)
(0.007 in. OS)
(0.012 in. OS)
3/8-16(27/32) x 3/8-24(7/8) x 1-3/4 (STD)
(0.003 in. OS)
(0.007 in. OS)
(0.012 in. OS)
5/16-18(13/16) x 5/16-24(19/32) x 1-11/16 (STD)
(0.003 in. OS)
(0.007 in. OS)
(0.012 in. OS)
Note. Refer to figure 6-1 for oversize stud
e. Assembly. Refer to figures 6-111 through 6-
identification.
101, 4-92 through 4-89, 6-100, and 6-99.
Section VIII. OVERHAUL OF FRONT FAN DRIVE HOUSING AND
CLUTCH ASSEMBLY
6-39. General
a.
This section covers the overhaul of the front
fan drive housing and clutch assembly. Specific
instructions on
disassembly, cleaning, in -
spection, repair and assembly accompany the
overhaul operations.
Overhaul standards o f
individual components follow the inspection
procedures.
Stud identification information is
included in the repair procedures. Refer to the
following table (table 6-24) for applicabl e
illustrations
an d
instructions for overhau l
operations.
b.
Fan drive housings on original production
engines were modified. to include an oil restrictor
in the horizontal oil passage, and can be iden-
tified by the hex-head on the restrictor (fig. 6-
127). The housings on improved design engines
were redesigned to
eliminate the need fo r
restrictors, and can be identified by the hex
socket head pipe plug in the horizontal oi l
passage on the side of the housing. Thes e
changes were made without part number change,
which necessitates identification as
“engines
having oil restrictors”.
c.
The clutch assemblies were redesigned for
simplification and are identified by different part
numbers. Although the clutches are similar ,
disassembly and assembly procedures differ.
Visual identification of piston actuated and
mechanical clutches is shown in figure 4-102.
The clutches are interchangeable as assemblies
only.
6-108
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