TMC MCI mc-9 - Page 37

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Reverse Shifting
(5-Speed)
On 5-speed transmissions a reverse solenoid is not used and the shift
to reverse can be made in the some way as the other gears.
Up Shifting
Always stan the coach in motion in first gear , then change progress-
ively onto, seco nd , third, etc. Do not skip gears. Double clutching is
recommended when making each gear change. Remain in each
transmission speed until the engine reaches full governed speed before
shifting into the next higher geo r.
5-Speed Manual Transmission Shift Points with 8V-71
Engine -2100 R.P.M . and 3.73 Rear Axle.
Gear Shif t
1-2
2-3 3- 4 4-5 Top Speed
Veh. Soeed
/MPH)
12.7 21.5
34.0 53.1 69.6
/kmh) 20.4
34.6 54.7 85.5
112
FIG. 36
Down Shifting
Double-clutching in downshift i ng is rec om mended . Always change to o
lower gear to ovoid engine "l ug ". lower gears should be used ir.
driving up or down grades , when operating on ice, snow or mud .
lower gears should be used when going down grade in order to
make use of the engine as o brake in controlli ng vehicle speed . The
same tronsmiss,on gecr should be used to go down o grade as would be
used in climbing it. Howeser , the engine should never be allowed to
operate at a speed higher tha n the maximum governed speed.
35
Use of Transmission
(Opt. Automatic)
CAUTION:
When parking vehicle, gearshift should always be left in
"NEUTRAL POSITION ."
The operation and driving of the MC-9 coach with an automatic
transmission is similar to that of a normal automobile automatic
transmission. In order to attain better vehicle performance proper
ranges should be selected for speeds to be driven depend ing on driving
conditions.
On 4-speed transm issions each forward range starts in 1st
gear ; on 5-speed transmissions the forward range starts in 2nd gear
o nd will only shift down to 1st if 1st gear is selected with the range
se lector lever . Upshifts occur automatically through the gear range
selected.
Automatic transmission range selector levers are equipped with a
pu ll-up re lea se mechanism . On 4- speed transmissions the pull-up
release must be used to shift in or out of neutral and reverse or for
downshifts from
3rd t hrough 1st gear . On 5-speed transmissions the
pull-up
re l ease must be used to shift in or out of neutral and reverse or
for any downshifts.
N .
NEUTRAL RANGE is used when starting the engine. Use the
position and apply the parking broke whenever vehicle is parked .
CAUTION:
When shifting from neutral to a drive range , the engine should
be at id le speed.
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