Manual Transmission; Backup Lamp Switch; Gearshift Patterns; Transmission Gear Ratios - Jeep J-10 Series 1982 Technical & Service Manual

2B-1
MANUAL
TRANSMISSION
SECTION INDEX
General Information
Model T4 4-Speed
Model T5 4-Speed
Pige
2B-1
2B-6
2B-18
Model T-176 4-Speed 2B-27
Model T-18A 4-Speed 2B-35
Tools 2B-45
GENERAL INFORMATION
Backup Lamp Switch
Gearshift Patterns
General
Identification
Service Diagnosis
Page
2B-1
2B-1
2B-1
2B-1
2B-2
GENERAL
Four manual transmission models are used in Jeep
vehicles; they are Models T4, T5, T-1T6, and T-18A.
Models T4 and T-176 are 4-speed, constant mesh units
providing synchromesh engagement in all forward gear
ranges. The Model T5 is a 5-speed constant mesh unit
providing synchromesh engagement in all forward gear
ranges. Model T-18A is a 4-speed, constant mesh unit
providing synchromesh engagement in second, third,
and fourth gear ranges only. First (low) gear is not
synchronized in this transmission.
Model T4 is used with four- and six-cylinder engines.
Model T5 is optional on four- and six-cylinder models
except six-cylinder CJ-5 vehicles. Model T-176 is used
with four-, six- and eight-cylinder engines. Model T-18A
is used in J-20 Truck models only.
All four transmission models are floor shift units.
Column shift units are not available in any Jeep model.
The shift mechanism on all transmission models is
located within the shift control housing which also
serves as the transmission top cover. The shift mecha
nism does not require adjustment and can be serviced
independently of the transmission.
GEARSHIFT PATTERNS
The gearshift pattern for each transmission model is
shown in the Gearshift Pattern Chart. The four forward
Transmission Gear Ratios
Transmission Installation
Transmission Lubricants
Transmission Removal
Page
2B-1
2B-5
2B-4
2B-4
gear ranges for each model are in a standard "H"
configuration.
BACKUP LAMP SWITCH
A spring and plunger-type backup lamp switch is used
on all models. The switch is located in the transmission
case and is actuated by the reverse shift rail. The switch
does not require adjustment and is serviced as an assem
bly only.
IDENTIFICATION
An identification tag displaying the Jeep part number
is attached on T4 and T5 models to the right side of the
adapter housing by an adapter housing-to-transmission
case bolt. On T-176 and T-18 transmissions, the identi
fication tag is bolted to the shift control lever housing
near its left rear corner. The information on this tag is
necessary to obtain correct replacement parts should
replacement become necessary. Be sure the tag is se
curely attached in the original location after completing
all service operations.
TRANSMISSION GEAR RATIOS
Refer to the Transmission Gear Ratio Chart at the end
of this chapter for ratio applications.