Section 120-0010
1
SM 1574 12-98
TRANSMISSION - Transmission and Mounting
DESCRIPTION
For transmission make, model and specification, refer
to Section 000-0000, GENERAL INFORMATION. For
transmission switches, sensors and instruments, refer
to Section 190-0270, SWITCHES AND SENSORS. For
transmission servicing and repair data, refer to the
transmission manufacturers service manual.
The transmission is remote mounted in the frame and
is supported by trunnion (2) assembly at the front and
two mounting brackets (9) at the rear.
Integral with transmission (1) assembly are torque
converter and planetary gearing. There are six forward
gears and two reverse gears with automatic lockup in
all speed ranges. Operation of the transmission is by
the Commercial Electronic Control (CEC) Shift System,
(previously known as ATEC).
A brief description and operation of the main
transmission components are as follows:
CEC Shift System
Refer to Section 120-0070, CEC SHIFT SYSTEM for
description and operation, wiring diagrams and
electrical troubleshooting of the CEC System.
Torque Converter
The torque converter consists of three elements -
pump, turbine, and stator. The pump is the input
element and is driven directly by the engine. The
turbine is the output element and is hydraulically
driven by the pump. The stator is the reaction (torque
multiplying) element.
Fig. 1 - Exploded View of Transmission and Mounting
1 - Transmission
2 - Trunnion
3 - Bolt
4 - Washer
5 - Locknut
6 - Bolt
7 - Hardened Washer
8 - Nut
9 - Mounting Bracket
10 - Bolt
11 - Lockwasher
12 - Isolation Mount
13 - Filler Cap
14 - Gasket
15 - Clamp
16 - Filler Hose
17 - Filler Tube
18 - Elbow
19 - Connector
20 - Nut
21 - Sleeve
22 - Nylon Tube
23 - Elbow
24 - Breather
25 - Adaptor
26 - Key
28
29
19
21
20
22
20
21
23
24
33
32
34
35,36
37
5
2
4
3
6
7
12
12
43
8
9
11
10
1
41
40
18
17
15
42
30
10
11
48
44
45
46
47
16
39
38
*39
*38
15
26
27
25
50
51
52
49
48
44
46
47
13
14
31
SM - 1965
40 - Drain Cock
41 - Adaptor
42 - Adaptor
43 - Snubbing Washer
44 - P-clip
45 - Bracket
46 - Lockwasher
47 - Nut
48 - Bolt
49 - P-clip
50 - Bolt
51 - Hardened Washer
52 - Nut
* - Pre June 1998
Production
27 - Padlock
28 - Bolt
29 - Cover Plate
30 - Level Gauge
31 - Ring
32 - Bolt
33 - Strip
34 - Retainer
35 - Shim
36 - Shim
37 - Input Yoke
38 - Nut
*38 - Locknut
39 - Output Yoke
*39 - Output Flange
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