Section VIII. OVERHAUL OF FRONT FAN DRIVE HOUSING AND CLUTCH ASSEMBLY

Table 6-23. Crankshaft Damper and Oil Filter Housing Standard and Oversize Stud Identification

Fig.

Setting

Ref. letter

No.

Stud size

No.

height

or No.

req'd.

and length

5/16-18(3/4)

5/16-24(19/32)

1-1/2

(STD)

B-6

7/8

(0.003 in. OS)

(0.007 in. OS)

(0.012 in. OS)

15 / 16

6-113

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)

6-113

25/32

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)

6-113

7/8

5/16-18(3/4)

5/16-24(19/32)

1-1/2

(STD)

6-113

27 / 32

(0.003 in. OS)

(oil pressure

(0.007 in. OS)

access cover)

(0.012 in. OS)

6-113

1-1 / 16

3/8-16(27/32)

x 3/8-24(7/8) x 1-3/4 (STD)

6-113

1 - 3 / 16

(0.003 in. OS)

(fuel pump

(0.007 in. OS)

check valve

(0.012 in. OS)

bracket)

6-113

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.

S e c t i o n VIII. OVERHAUL OF FRONT FAN DRIVE HOUSING AND

CLUTCH ASSEMBLY

6-39. General

1 2 7 ) . The housings on improved design engines

were redesigned to eliminate the need for

a. This section covers the overhaul of the front

restrictors, and can be identified by the hex

f a n drive housing and clutch assembly. Specific

socket head pipe plug in the horizontal oil

disassembly, cleaning, in-

instructions on

passage on the side of the housing. These

spection, repair and assembly accompany the

c h a n g e s were made without part number change,

overhaul operations. O v e r h a u l s t a n d a r d s o f

which necessitates identification as "engines

individual components follow the inspection

having oil restrictors".

procedures. Stud identification information is

c. T h e c l u t c h a s s e m b l i e s w e r e r e d e s i g n e d f o r

included in the repair procedures. Refer to the

following table (table 6-24) for applicable

s i m p l i f i c a t i o n and are identified by different part

illustrations a n d i n s t r u c t i o n s f o r o v e r h a u l

numbers. Although the clutches are similar,

operations.

disassembly and assembly procedures differ.

b. F a n d r i v e h o u s i n g s o n o r i g i n a l p r o d u c t i o n

Visual identification of piston actuated and

mechanical clutches is shown in figure 4-102.

engines were modified. to include an oil restrictor

in the horizontal oil passage, and can be iden-

The clutches are interchangeable as assemblies

tified by the hex-head on the restrictor (fig. 6-

only.

6-108