SSANGYONG MUSSO 2003 Service Manual

REAR DRIVE AXLE 3D-11
UNIT REPAIR
AXLE HOUSING Preceding Work : Removal of the axle shaft Removal of the axle housing
1 Drive Pinion Lock Nut ......................240-310 Nm
2 Washer
3 Companion Flange
4 Pinion Oil Seal
5 Bearing Slinger
6 Bearing
7 Shim
8 Shim
9 Bearing Cup
10 Breather Nipple
11 Rear Axle Housing
12 Oil Drain Plug ....................................... 28-42 Nm
1 3 Shim
14 Bearing
15 Drive Pinion
16 Bearing Cap 17 Bolt
.................................................... 87-124 Nm
18 Bearing
1 9 Shim
20 Ring Gear
21 Shaft Lock Pin
22 Differential Case
23 Ring Gear Mounting Bolt ......................75-90 Nm
24 Thrust Washer
25 Differential Pinion
26 Thrust Washer
27 Side Gear
28 Differential Shaft
29 Housing Cover
30 Bolt ...................................................... 38-46 Nm
31 Oil Filler Plug ....................................... 28-42 Nm

3D-12 REAR DRIVE AXLE
Disassembly Procedure
1. Remove the drain plug and drain the oil. Reinstall the drainplug.
2. Remove the axle housing cover. Notice Clean the cover and housing contact surface.
3. Remove the bearing cap bolts and remove the bearing caps. Pull out the differential carrier assembly. Notice Place alignment marks on the bearing cap not to change the caps before removal. When pulling out the differential
carrier assembly, be careful not to damage the axle housing.
4. Disassemble the parts of the differential carrier assembly.
Tightening Torque 28 - 42Nm

REAR DRIVE AXLE 3D-13
5. Remove the drive pinion lock nut. Disassemble the parts ofthe drive pinion.
Assembly Procedure
1. Clean the all parts and check the followings. Check the ring gear and drive pinion for wear or damage.
If damaged, replace it as set.
Check the bearing for sticks, wear, noise or turning
resistance.
Check the side gear, pinion, pinion shaft and thrust
washer for wear or damage.
Check the differential carrier for crack or wear (bearing
contact surface). Check the gear case for crack.
2. Assemble the parts of the drive pinion.
3. Assemble the parts of the differential carrier.
Tightening Torque of The Pinion Lock Nut 240 - 310 Nm
Tightening Torque of The
Ring Gear Bolts 75 - 90 Nm

3D-14 REAR DRIVE AXLE
4. Measure backlash of the side gear and pinion gear.
Specified Value 0 - 0.05 mm
5. Install the differential carrier assembly into the axle housing.
Tightening Torque of The Bearing Cap Bolts 48 - 69 Nm
Notice Be careful no to change the caps. Be sure to keep the original position of the caps.
6. Measure backlash of the drive pinion and ring gear.
7. Install the axle housing cover.
Specified Value 0.13 - 0.20 mm
Tightening Torque 39 - 46 Nm

REAR DRIVE AXLE 3D-15
Inspection of Ring Gear Tooth Contact Pattern Normal Contact Apply gear-marking compound (prussian blue / red lead) on the ring gear teeth. Rotate the ring gear and check the tooth contact pattern. Abnormal Contact
Tooth Contact pattern Possible CauseRemedy
1. Heel Contact
2. Toe Contact
3. Face Contact
4. Flank ContactInsufficient backlash (little)

Tooth can be damaged or broken under heavy load
Excessive backlash (much)
Drive pinion shaft is apart from the ring gear
Noise can be occurred
Insufficient backlash (much)
Gear contacts on the low flank
Gear can be damaged orworn
Noise can be occurred Adjust backlash(Decrease backlash)

Select proper shim(s) to move the drive pinion toward the ring gear (toward toe)
Adjust backlash(Increase backlash)
Select proper shim(s) to move the drive pinion against the ring gear (toward heel)
Adjust backlash(Increase pinion shim)
Move the drive pinion toward the ring gear (toward center of ring gear)
Adjust backlash(Decrease pinion shim)
Move the ring gear toward the drive pinion (toward ring gear center line)
Excessive backlash (little)

Noise can be occurred

3D-16 REAR DRIVE AXLE LSD (LIMITED SLIP DIFFERENTIAL)
1 Limited Slip Differential Assembly
2 Shaft, Hub (left)
3 Shim
4 Thrust Washer
5 Face Cam (left)
6 Cam Whillom
7 Thrust Bearing
8 Radial Bearing9 Shaft, Hub (right)
10 Thrust Washer
11 Face Cam (right)
12 Cage
13 Thrust Bearing
14 Plate Spring
15 Radial Bearing
16 Oil Catcher

REAR DRIVE AXLE 3D-17
Inspection
Remove the LSD assembly and check the pre-load torque.
If necessary, replace LSD assembly.
Procedure
1. Fix the right shaft of LSD to the special tool (A).
2. Install the special tool (B) to the left shaft and rotate counterclockwise and check the pre-load torque.
Normal Torque 3.6 - 9.0kgm
Notice
If necessary, replace LSD assembly.

SECTION 4A
HYDRAULIC BRAKES
Specifications . . . . . . . . . . . . . . . . . . . . . . . . 4A-1
General Specifications . . . . . . . . . . . . . . . . . . 4A-1
Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . 4A-2
Noise or Vehicle Vibration When Applied
Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4A-2
Pulls to One Side When Braking . . . . . . . . . . . 4A-2
Poor Braking . . . . . . . . . . . . . . . . . . . . . . . . . . 4A-2Increasing Pedal Stroke (Pedal Goes to
Floor) or Brake Dragging . . . . . . . . . . . . . . . 4A-3
Poor Braking of Parking Brake . . . . . . . . . . . . 4A-3 TABLE OF CONTENTS
Component Locator . . . . . . . . . . . . . . . . . . . 4A-4
ABS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4A-4
ABS / ABD . . . . . . . . . . . . . . . . . . . . . . . . . . . 4A-5
Non-ABS / ABD . . . . . . . . . . . . . . . . . . . . . . . . 4A-6
Maintenance and Repair . . . . . . . . . . . . . . . 4A-7
On-Vehicle Service . . . . . . . . . . . . . . . . . . . . . 4A-7
Bleeding the Brakes . . . . . . . . . . . . . . . . . . . . 4A-7
Brake Pedal . . . . . . . . . . . . . . . . . . . . . . . . . . 4A-9
LCRV (Load Conscious Reducing Valve) . . . 4A-12
Caution: Disconnect the negative battery cable before removing or installing any electrical unit or when a tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting thiscable will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCKunless otherwise noted.
Type
Pedal Ratio
Pedal Stroke
Pedal Freeplay Type
Inner Diameter Type
Ratio
Type
I.D. of Caliper Cylinder
Thickness of Brake Pad Thickness of Disc Plate Type
I.D. of Caliper Cylinder
Thickness of Brake Pad Thickness of Disc Plate
Type
Operation
Specification PBR Brake
4.3 : 1
132 mm
23.81 mm
5.0 : 1
60.4 mm

40.5 mm
9.5 mm

Suspended
1 - 4 mm
Tandem Type with Lever Sensor
Vacuum Booster Type
Ventilated Disc 10 mm 24 mm
Rear Wheel Internal Expansion Type Mechanical
SAE J1703, DOT3
SPECIFICATIONS
GENERAL SPECIFICATIONS
Brake Pedal
Master Cylinder Brake Booster Front Brake
Rear Brake
Parking Brake Brake Fluid MANDO Brake
4.3 : 1
138 mm
25.4 mm
5.6 : 1
60 mm
Solid Disc
38.2 mm
10.0 mm 10.4 mm
Application

4A-2 HYDRAULIC BRAKESCheck
Dirty or Lack of Fluid Air in Brake SystemFaulty Brake Booster Poor Contact of Pad or Lining Oil or Grease on PadFaulty Auto AdjusterOver Heated Rotor Due to Dragging Pad or LiningClogging Brake Line
Faulty Proportioning Valve Check
Incorrect Tire Pressure Between Left and Right Poor Contact of Pad or LiningOil or Grease is Applied to Pad or LiningBent or Uneven Wear of DrumIncorrectly Mounted Wheel Cylinder Faulty Auto Adjuster Action
Repair
Retighten Replace Replace
RepairRepair
Lubricate
Retighten
Check
Incorrectly Mounted Back Plate or CaliperLoosened Bolt of Back Plate or CaliperCrack or Uneven Wear of Brake Drum or DiscPad or Lining Sticking to Contact Surface Excessive Clearance Between Caliper and Pad Uneven Contact of PadLack of LubricationLoosened Suspension DIGNOSIS
NOISE OR VEHICLE VIBRATION WHEN APPLIED BRAKE
PULLS TO ONE SIDE WHEN BRAKING
Action Adjust
Repair
Replace Replace
Repair
Replace
Action
Replenish or Replace(Check eventual leakage) Bleeding
Replace
Repair
Replace Replace RepairRepair
Repair
POOR BRAKING
( If low cut-in : Adjust ) ( If Leakage : Replace )

HYDRAULIC BRAKES 4A-3
Check
Air in Brake system Fluid LeakingExcessive Clearance Between Push Rod and M/cylinder Parking Brake is not Fully Released Incorrect Adjustment of Parking BrakeWeak Return Spring of Brake PedalIncorrect Pedal FreeplayBroken Rear Drum Brake Shoe Return Spring Lack of Lubrication
Damaged Master Cylinder Check Valve or Piston Return Spring Action
Bleeding
RepairAdjust
Repair Adjust
Replace
Repair
Replace
lubricate Replace
INCREASING PEDAL STROKE (PEDAL GOES TO FLOOR)
OR BRAKE DRAGGING
Check
Insufficient Clearance Between Push Rod and Master Cylinder Worn Brake Lining Oil or Grease on Lining Binding Parking Brake CableFaulty Auto AdjusterExcessive Lever Stroke Action
Adjust
Replace Replace ReplaceReplace
Adjust or Check Cable
POOR BRAKING OF PARKING BRAKE