Opel Frontera UE. Manual - part 1613

MANUAL TRANSMISSION

7B–1

FRONTERA

TRANSMISSION

MANUAL TRANSMISSION MUA 5C (4X4)

CONTENTS

Service Precaution

7B–1

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General Description

7B–2

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Diagnosis (MUA)

7B–3

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Transmission (MUA)

7B–4

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Disassembled View

7B–4

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Removal

7B–4

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Installation

7B–8

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Transmission Case and Transfer Case

7B–11

. . . . . 

Major Component (MUA)

7B–11

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Disassembly

7B–12

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Reassembly

7B–15

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Intermediate Plate with Gear Assembly,
 Detent, Shift Arm, and Interlock Pin (MUA)

7B–20

. 

Disassembled View

7B–20

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Disassembly

7B–21

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Inspection and Repair

7B–22

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Reassembly

7B–23

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Reverse Gear and 5th Gear (MUA)

7B–24

. . . . . . . . 

Disassembled View

7B–24

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Disassembly

7B–25

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Inspection and Repair

7B–27

. . . . . . . . . . . . . . . . . . 

Reassembly

7B–27

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Top Gear Shaft, Main Gear Shaft, and
 Counter Gear Shaft (MUA)

7B–33

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Disassmebled View

7B–33

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Disassembly

7B–34

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Inspection and Repair

7B–35

. . . . . . . . . . . . . . . . . . 

Reassembly

7B–38

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Main Data and Specifications

7B–44

. . . . . . . . . . . . . 

Special Tools (MUA)

7B–48

. . . . . . . . . . . . . . . . . . . . . 

Service Precaution

WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO 

THE SRS

COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING, REFER TO
THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN POSSIBLE
AIR BAG DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.

CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.

SECTION

7B–2

MANUAL TRANSMISSION

General Description

MUA5C Transmission

A07RX005

The MUA5C is a constant mesh transmission,
synchronized in all speeds.  The transmission is designed
for a great reduction of the shift effort and the quietest
possible operation.
Principle parts of the transmission are the integral clutch
housing, intermediate plate, the transfer case, the rear
cover, and the gears.
The transmission control box and transfer control box are
built into the transmission and transfer case.

SECTION

MANUAL TRANSMISSION

7B–3

Diagnosis (MUA)

Condition

Possible cause

Correction

Abnormal noise

Flywheel pilot bearing worn

Replace

Bearings worn or broken (Mainshaft,
counter shaft, and transfer shaft)

Replace

Gear tooth contact surfaces worn or
scuffed (Mainshaft, counter shaft,
reverse idler gear and transfer gears)

Replace

Splines worn (Mainshaft,
synchronizer clutch hub)

Replace

Gear or bearing thrust face seized

Replace

Lack of backlash between meshing
gears

Replace

Hard Shifting

Improper clutch pedal free play

Readjust

Change lever sliding portions worn

Repair or replace Regrease

Shift block, shift rod and/or control
box sliding faces worn

Replace

Shift arm and synchronizer sleeve
groove worn

Replace worn parts

Thrust washer, collar, and/or gear
thrust faces worn (Mainshaft and
counter shaft thrust play)

Replace worn parts

Synchronizer parts worn

Replace

Walking or Jumping out of gear

Detent ball worn

Replace

Detent spring weakened or broken

Replace

Shift rod and/or control box sliding
faces worn

Replace

Shift arm and synchronizer sleeve
groove worn

Replace worn parts

Thrust washer, collar, and/or gear
thrust faces worn (Mainshaft and
counter shaft thrust play)

Replace worn parts

Bearings worn or broken

Replace

Splines worn (Mainshaft,
synchronizer hub)

Replace

Synchronizer spring weakened or
broken

Replace

Oil leakage

Loose drain plug(s) and/or filler
plug(s)

Tighten Replenish oil

Defective or improperly installed
gasket(s)

Replace

Oil seal worn or scratched

Replace

SECTION

7B–4

MANUAL TRANSMISSION

Transmission (MUA)

Disassembled View

220R100002

Legend

(1) Gear Control Lever Knob
(2) Transfer Control Lever Knob
(3) Center Console
(4) Grommet Assembly
(5) Gear Control Lever and Transfer Control Lever
(6) Transfer Protector
(7) Rear Propeller Shaft
(8) Front Propeller Shaft
(9) Center Exhaust Pipe

(10) Harness Clamp

(11) Harness Heat Protector

(12) Dust Cover
(13) Rear Mount Nut
(14) Third Crossmember
(15) Starter
(16) Flywheel Undercover
(17) Transmission Retaining Nut and Bolt
(18) Transmission

Removal

NOTE: Befor removing transmission assembly from
vehicle, change the transfar mode to 2WD using the 4WD
push button on dash panel.

1. Disconnect battery ground cable.
2. Remove gear control lever knob(1).
3. Remove transfer control lever knob(2).

SECTION