TM 9-2320-211-20
2-164. Speedometer Sending Unit
nuts securing the breaker to the left front side of the
a. Removal (fig. 2-168).
cab cowl, and remove the breaker from the cowl.
(1) Unscrew the nut securing the flexible shaft
b. Installation.
to the speedometer sending unit on the front of the
( 1 ) Position the circuit breaker on the left
transfer
case, a n d pull the shaft end from the
front side of the cab cowl, and secure it with two
sending unit.
screws, lockwashers, and nuts.
( 2 ) Unscrew the coupling nut securing the
(2) Connect the two harness cable connectors
sending unit to the transfer case, and remove the
to the circuit breaker terminal connectors.
unit from transfer case.
b. Installation (fig. 2-168).
(1) Insert the speedometer sending unit drive
a. Removal (fig. 2-188).
shaft in the opening at the front of the transfer case,
(1) Disconnect the bayonet type connector on
and tighten the coupling nut.
the air pressure gage-to-sending unit cable from the
(2) Insert the end of the speedometer flexible
terminal connector at the sending unit.
shaft in the sending unit and tighten the connector
( 2 ) Unscrew the sending unit from the air
nut.
m a n i f o l d i n s t a l l e d i n the air reservoir-to-air
2-165. Tachometer Sending Unit
governor line on the back of the cab cowl behind
a. Removal.
the instrument panel, and remove the sending unit
(1) G a s o l i n e e n g i n e .
from the vehicle.
(a) U n s c r e w t h e n u t s e c u r i n g t h e
b. Installation (fig. 2-188).
tachometer flexible shaft to the sending unit at the
(1) Screw the threaded end of the air pressure
drive housing, a n d pull the shaft end from the
gage sending unit into the threaded hole in the air
sending unit.
manifold at the back side of the cab cowl behind the
(b) U n s c r e w t h e n u t ( b e a r i n g r e t a i n e r )
instrument panel.
securing the sending unit to the distributor drive
(2) Connect the bayonet type connector on the
housing, and remove it from the housing.
air pressure gage-to-sending unit cable to the
(2) D i e s e l e n g i n e .
terminal connector at the sending unit.
(a) U n s c r e w t h e n u t s e c u r i n g t h e
2-162. Fuel Gage Sending Unit
tachometer flexible shaft to the sending unit (drive
a. Removal (fig. 2-71).
assembly) and pull the shaft end from the sending
(1) Disconnect the bayonet type connector on
unit.
the fuel gage-to-fuel gage sending unit cable from
(b) R e m o v e t h e t w o s c r e w s a n d l o c k -
the terminal connector at the sending unit.
washers securing the sending unit on the engine
(2) Remove the five screws and washers
auxiliary drive housing. Remove the gasket.
securing the sending unit to the top of the fuel tank,
b. Installation.
and remove the sending unit from the tank.
(1) G a s o l i n e e n g i n e .
R e m o v e and discard the fuel tank sending unit
(a) Insert the tachometer sending unit in
gasket.
the opening at the front distributor drive housing,
b. Installation (fig. 2-71).
so that the drive shaft engages the slot in the end of
(1) Install a new fuel tank sending unit gasket
the governor control valve shaft. Tighten the nut
at the opening in the top of the fuel tank.
(bearing retainer).
( 2 ) Insert the fuel gage sending unit in the
(b) Aline the key on the end of the
tank opening, and secure it with five screws and
tachometer flexible shaft with the keyway in the
washers.
drive shaft, insert the end of the flexible shaft in the
(3) Connect the bayonet type connector on the
sending unit, and tighten the connector nut.
f u e l gage-to-fuel gage sending unit cable to the
(2) D i e s e l e n g i n e .
terminal connector on the sending unit.
(a) Install the gasket and sending unit on
the auxiliary drive housing, and attach it with two
2-163. Oil Pressure Gage Sending Unit
screws and washers.
a. Removal. The procedure for removing the oil
(b) Aline the key on the end of the
pressure gage sending unit is the same as for the air
tachometer flexible shaft with the keyway in the
pressure gage sending unit. Refer to paragraph 2-
sending unit, i n s e r t it in the sending unit, and
144.
tighten the connector nut.
b. Installation. The procedure for installing the
oil pressure gage sending unit is the same as for the
air pressure gage sending unit. Refer to paragraph
