TM 9-2320-211-10-1
FRAME 8
1.
To downshift when truck cannot keep speed:
CAUTION
Do not downshift until engine speed is below 1800 rpm.
(a)
Let accelerator pedal (1) up.
Step down on clutch pedal ( 2).
(b)
(c)
Move FRONT TRANSMISSION gearshift lever ( 3) to next lower position.
(d)
Step down on accelerator pedal (1) to speed up engine to between 1600
and 1800 rpm as shown on tachometer (4) or tachograph (5) .
Let clutch pedal (2) up slowly.
(e)
(f)
Step down on accelerator pedal (1) to hold truck in new speed range on
data plate (6) .
(g) Do steps l(a) through l(f) again if truck cannot hold speed.
GO TO FRAME 9
CAUTION! DO NOT EXCEED!
MAXIMUM ROAD SPEED IN MPH
TRANSMISSION
TRANSFER
CASE
HIGH
LOW
26
FIFTH (D I R E C T)
53
18
FOURTH
36
10
THIRD
21
6
SECOND
13
3
FIRST
7
3
REVERSE
7
ON ALL TRUCKS
EXCEPT LATER
MODEL M52A2
ON LATER
TRACTORS
M52A2 TRACTORS
4-54