Immediately after removing fuel lines, cover each
injector opening with caps to keep out dirt.
Remove four inlet fuel lines (1) and four outlet
fuel lines (2) from fuel injectors (3) and fuel
connectors (4). Discard fuel lines.
Tag rocker arms, shafts, brackets,
valves, cam followers, and
associated hardware so they can
be installed in their original
On model 7083-7395, one rocker
arm shaft bracket on right cylinder
head contains throttle delay
(2) Remove eight bolts (6) securing
rocker arm shafts (7) and brackets (8)
to cylinder head.
Inspect throttle delay check valve for
leakage. Fill throttle delay cylinder
with fuel oil and watch check valve
leakage while moving engine
throttle from idle to full fuel position.
If more than a drop of leakage
occurs, replace check valve.
Remove four rocker arm shafts (7)
and eight rocker shaft brackets (8)
from cylinder head. If necessary,
remove check valve (9) and oil supply
fitting (10) from throttle delay housing
(5) used on model 7083-7395.
Swing rocker arms (11 ) away from
injector and valves. Remove four
injector clamp bolts (12), four washers
(13), and four clamps (14).
Remove four fuel injectors (4) from
Loosen twelve locknuts (15) at upper
end of push rods (16) next to rocker
arm clevis. Unscrew twelve rocker
arms (11 ) from push rods.
Remove eight valve bridges (17) from
bridge guides (18).