Winnebago 1987-1989 LeSharo Service Manual page 309

DIAGNOSTIC
VACUUM CAPSULE
The vacuum capsule varies the fluid pressure to suit
the engine load.
CHECKING THE VACUUM CAPSULE
• Engine stopped
• Check the routing of the vacuum hose.
• Connect a manual vacuum pump to the vacuum
hose disconnected from the intake manifold.
• If the reading is incorrect, perform the test again
directly on the capsule. If the result is good,
change the hose, if it is not, change the capsule.
• Also make sure that the connection on the intake
manifold is in good condition.
NEEDLE
"/
/1
I
REMOVAL
• Disconnect the hose, remove stop plate (2) and
unscrew the capsule.
REFITTING
• Oil the capsule (black rubber)
Vacuum to be
applied
525 mbar or
400 mmHg
(16
in.
Hg)
STABLE
GOOD
DROPS
INCORRECT
• Screw the capsule in 2 1/2 to 3 turns and attach
lock plate (2).
• TOP UP THE FLUID AND ADJUST THE FLUID
PRESSURE (See "FLUID PRESSURE" on previous
page).
F2-35