Jeep UNIVERSAL CJ-2A - Fuel Tank Cap; Fuel Tank Straps

'Jeep' UNIVERSAL and 'Jeep' DISPATCHER
F
line at the fuel pump. Attach a vacuum gauge to
the fuel pump inlet. Start the engine, accelerate to
specified speed, and hold this engine speed while
taking a gauge reading. Permissible gauge reading
is 8" [203 mm.] of mercury (Hg] at 1200 rpm. and
10%" (267 mm.] at 1800 rpm.
F'-47. Vacuum Booster Check
To test the condition of the vacuum booster pump,
disconnect both inlet and outlet lines at the pump.
Attach a vacuum gauge to the windshield wiper
connection at the pump. Start the engine, accelerate
to 2000 rpm., and hold this engine speed while
taking a gauge reading. Permissible gauge reading
is 10" to 14" [254 a 356 em.] of mercury (Hg].
F' -48. Air Cleaner
Servicing of the air cleaner is properly taken care
of as part of the periodic lubrication and servicing
of the vehicle. For this reason, air cleaner servicing
information is given in the Lubrication Section.
Refer to and follow the instructions given there.
F' -49. Accelerator Linkage
The accelerator linkage is properly adjusted when
the vehicle leaves the factory. However, in time
component parts will become worn and require ad-
justment to maintain a smooth even control of
engine speed. On Models CJ-3B, CJ-5 and CJ-6
adjustment is made at the adjusting block, Fig.
132. Loosen the lock nuts, and adjust the length
of the accelerator rod so that when the carburetor
throttle valve is wide open the accelerator treadle
will just strike the toe board. After correct ad-
justment is made tighten both lock nuts firmly.
On Models CJ-2A and CJ-3A, adjust the linkage,
as described above, at the adjusting block, Fig. 134.
On Model DJ-3A, adjust the linkage at the adjust-
ing block, Fig. 133.
F' -50. F'uel Tank Straps
Models CJ -3B, CJ -5, CJ -6
The fuel tanks are wider and the hold-down straps
longer beginning with the following production
serial numbers:
CJ-3B 57348-43965 and on
CJ-5 57548-77001 to -77882; 57548-77983 and on
CJ-6 57748-14359 and on
This change also eliminated the crimped portion
of the fuel tank upper flange. To have the old
straps accommodate a new replacement tank,
crimp the flanges of the new tank at the strap
point. Also, where the new longer straps are used
with the old style tank, add an extra piece of anti-
squeak between strap and tank.
F'-51. F'uel Tank Cap
A pressure type fuel tank filler cap is used on all
models.
This is necessary to prevent fuel leakage
from the cap vent opening when the vehicle is on a
side slope.
Two spring loaded relief valves which
open when venting is required are built into the
cap. The pressure valve opens at 1% to 2% pounds
per sq. in. [.105 to .176 kg/sq. em.] and the vacuum
valve at %' pounds [.053 kg/sq. em.]. Should the
pressure valve fail to open, pressure in the tank
may force fuel by the carburetor inlet valve caus-
ing flooding. Failure of the vacuum valve may
prevent flow of fuel to the carburetor. Shoul:i the
valves fail to vent install a new cap.
109