Chevrolet 10 1971 Series Chassis Service Manual page 314

CLUTCHES AND TRANSMISSIONS 7-38
Test lamps which use size 1893 or smaller
bulb, will not damage the switch.
1. Disconnect electrical wire harness from transmis­
sion electrical connector. If using a continuity tester
which has a self contained power source, connect
one tester lead to pressure switch terminal of trans­
mission connector (see Fig. 7T), and connect other
lead to ground. Tester should show current flowing
through the switch (switch closed).
If the truck's battery is to be used to power a
simple light bulb type tester, connect one lamp lead
to pressure switch terminal of transmission con­
nector and connect other lead to a " Hot'' terminal
of the truck's wiring harness. Check that truck's
battery cables are connected.
TURBO HYDRA-MATIC 400 SHIFT POINTS
Engine
Throttle Position
Closed
Thru Detent (W.O.T.)
Engine
Throttle Position
Closed
Thru Detent (W.O.T.)
Engine
Throttle Position
Closed
Thru Detent (W . O. T.)
Engine
Throttle Position
Closed
Thru Detent (W.O.T.)
CONV. TRUCK MODELS (MPH)
CE 100 V-8 (402)
CJ 3.07 Axle G78-15 Tire
1-2 up 2-1 dn 2-3 up
8-14 13-7
20-31
34-48 41-25 62-77
CA 300 MODELS (MPH)
CA 300 L6 & (307) V-8
CM 4.57 Axle 8.75-16.5 Tire
1-2 up 2-1 dn 2-3 up
14-21
5-10 9-5
24-35 45-56
25-16
CE 300 V-8 (402)
CJ 4.10 Axle 8.75-16.5 Tire
1-2 up 2-1 dn 2-3 up
6-11 10-5 16-25
27-39 33-20 50-62
PE 300 V-8 (350)
CM 4.57 Axle 8.75-16.5 Tire
1-2 up 2-1 dn 2-3 up
9-5
5-10 14-21
24-35 25-16 45-56
2. Set parking brake, apply service brakes, start en­
gine and let it idle. Move transmission selector to
" Drive" and tester should show current flowing
through switch to ground (switch closed).
3. With brakes still applied, move transmission selector
to " Reverse" (which supplies transmission oil pres­
sure to pressure switch) and tester should show no
current flowing through switch to ground (switch
open).
4. If above test indicates a defective pressure switch
circuit, the transmission bottom pan must be re­
moved to service the pressure switch or lead wire
assembly.
CE 200 V-8 (402)
CJ 3.54 Axle 8.75-16.5 Tire
3-2 dn 1-2 up 2-1 dn
27-16 7-13 12-6
71-55 31-.45 39-23
CE 300 V-8 (350)
CM 4.10 Axle 8.75-16.5 Tire
3-2 dn 1-2 up 2-1 dn
6-11 10-5
18-11
51-39 27-39 28-18
PA 300 L6 & V-8 (307)
CM 4.57 Axle 8.75-16.5 Tire
2-1 dn
3-2 dn 1-2 up
5-10 9-5
22-13
57-44 24-35 25-16
PE 300 V-8 (350)
CM 4.10 Axle 8.75-16.5 Tire
2-1 dn
3-2 dn 1-2 up
10-5
18-11 6-11
51-39 27-39 28-18
2-3 up 3-2 dn
19-29 25-15
58-72 66-51
3-2 dn
2-3 up
20-12
15-23
50-62 57-44
2-3 up 3-2 dn
14-21 18-11
51-39
45-56
2-3 up 3-2 dn
20-12
15-23
50-62 57-44
10-30 CHEVROLET TRUCK SERVICE MANUAL