Section X. REBUILS OF CYLINDER HEAD COVERS, BREATHER TUBE ADAPTER, CRANKCASE BREATHER TUBE , AND RELATED PARTS

Section X. REBUILS OF CYLINDER HEAD COVERS, BREATHER TUBE

ADAPTER, CRANKCASE BREATHER TUBE , AND RELATED PARTS

204. CYLINDER HEAD COVERS

N o t e . Early model front cylinder head covers

incorporated a screen soldered to the lower end

N o t e . The key letters shown below in paren-

of the oil filler tube. If screen is present, un-

theses refer to figure 393 except where other-

solder and discard screen.

wise indicated.

--. Cleaning and Inspection.

205. BREATHER TUBE ADAPTER

(1) Cleaning. Clean the oil filler cap (H)

with warm water and soap. Clean the

N o t e . The key letters shown below in paren-

front and rear cylinder head covers

theses refer to figure 393 except where other-

(J and C) as directed in paragraph 152 c.

wise indicated,

(2) I n s p e c t i o n . Inspect the front and rear

a . Disassembly. D i s a s s e m b l e the breather

c y l i n d e r head covers (J and C) for

tube adapter and rubber hose following instruc-

cracks and dents. Inspect the oil filler

tions on figure 394.

cap (H) for cracks and damage to lock

tabs on inside of cap. Inspect sealing

--. Cleaning and Inspection.

gasket inside of cap for tears or dam-

a g e that would prevent a tight seal.

(1) C l e a n i n g . Clean the breather tube a-

dapter (E), and hose clamps (K) as

directed in paragraph 152 c . Clean the

b . Repair. Straighten minor dents in front

rubber hose (L) with warm water and

and rear cylinder head covers (J and C). Re-

soap.

place cracked or severely dented cylinder head

c o v e r s . Replace the oil filler cap (H) when

(2) I n s p e c t i o n . Inspect the breather tube

c r a c k e d , lock tabs are damaged, or gasket is

damaged.

adapter (E) as directed in paragraph

153 b . Inspect the rubber hose (L) for

c r a c k s , hardening, and set condition,

Inspect hose clamps (K) for cracks

and bends.

c . R e p a i r . Repair the breather tube adapter

( E ) as directed in paragraph 154 b . Replace

t h e rubber hose (L) when cracked, hardened,

or in a set condition. Replace the hose clamps

(K) when cracked or bent.

d . Assembly, Refer to figure 394 and reverse

the sequence of instructions to assemble the

breather tube adapter and rubber hose.

206. CRANKCASE BREATHER TUBE

N o t e . The key letters shown below in paren-

theses refer to figure 393 except where other-

wise indicated.

FIGURE 394. SEPARATING OR ASSEMBLING

a . Disassembly. N o d i s a s s e m b l y o f t h e

BREATHER TUBE ADAPTER AND RUBBER

crackcase breather tube is required.

HOSE.

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