TM 5-3805-262-20
4-1. ENGINE MAINTENANCE (CONT)
d. Exhaust Manifold (cont).
CLEANING AND INSPECTION
Dry cleaning solvent P-D-680 used to clean parts is toxic and flammable.
W e a r p r o t e c t i v e g o g g l e s a n d g l o v e s a n d u s e o n l y i n a w e l l v e n t i l a t e d
a r e a . A v o i d c o n t a c t w i t h s k i n,
e y e s a n d c l o t h e s a n d d o n t b r e a t he
vapors. Do not use near open flame or excessive heat and dont smoke
w h e n u s i n g i t.
F a i l u r e t o d o s o c o u l d c a u s e s e r i o u s i n j u r y . I f y o u
b e c o m e d i z z y w h i l e u s i n g c l e a n i n g s o l v e n t , g e t f r e s h a i r a n d m e d i c al
attention immediately. I f c o n t a c t w i t h s k i n o r c l o t h e s i s m a d e , f l u sh
w i t h l a r g e a m o u n t s o f w a t e r .
If contact with eyes is made, wash eyes
with water and get medical aid immediately.
( 1)
Clean all parts using cleaning
solvent P-D-680; dry using clean
cloths.
( 2)
Remove all traces of gasket (5)
material from exhaust manifolds (3
and 4) and mating surface of cylinder
heads. Use clean cloth moistened with
cleaning solvent P-D-680.
(3)
Inspect exhaust manifolds (3 and 4)
for areas weakened by rust or
corrosion and cracks or breaks. Re-
place as necessary. If necessary to
separate manifolds, use penetrating
oil and apply completely around area
where manifolds are joined. This will
dissolve any rust to help separate
manifolds.
(4)
Check studs (6) located on
cylinder heads for damaged or
stripped threads. Clean up
threads using 3/8-16NS die. If
threads cannot be cleaned up,
remove stud using pliers. In-
stall new studs in cylinder
heads until they protrude as
shown.
4-8