Page 809 of 2053
1F3 -- 6 OM600 ENGINE CONTROLS
D AEW OO M Y_2000
Tools Required
001 589 73 21 00 Vacuum Pump
201 589 13 21 00 Vacuum Tester
667 589 00 21 00 TDC pulse generator
Commercial Tools
Digital testere.g. Bosch MOT 001.03
Sun DIT 9000
Temperature measuring instrument with test probe
WB24e.g. Ahlborn, Therm 2263 -- 2
Eichenfeldstrabe 1 -- 3
D-- 8150 Holzkirchen
Tester Connection
11 TDC Pulse Sender Unit
12 Digital Tester
Page 810 of 2053
OM600 ENGINE CONTROLS 1F3 -- 7
D AEW OO M Y_2000
Test step 1
Connect vacuum pump (14) with Y adapter to
PLA vacuum unit (5). Run engine at idle speed.
Vacuum≧500 mbar
YES
NO
Faulty PLA vacuum unit
(Coolant Temperature 30_C)
Connect vacuum pump (14) direct to PLA
vacuum unit (5) and pressurize with vacuum.
YES
NO
Lines and connections leaking.
Faulty PLA vacuum unit.
(Remove the connection hose from vacuum pump)
Vacuum is built up and idle speed increases
approx. 150-- 200 rpm
YESNO
Lines and connections leaking.
Faulty thermovalve.
Stop the engine Seal the air admission line with
plug. Connect the vacuum pump to line to ther-
movalve and pressurize the line with vacuum.
Vacuum is built up.
Page 811 of 2053
1F3 -- 8 OM600 ENGINE CONTROLS
D AEW OO M Y_2000
Detach line downstream of air admission filter
(13).
Vacuum drops
YES
NO
Faulty filter with restriction.
Fit the line onto air admission filter. Built up vacu-
um with vacuum pump. Detach the plug from air
admission line.
YES
NO
Faulty thermovalve
Vacuum drops
Go to test step 2
Page 812 of 2053
OM600 ENGINE CONTROLS 1F3 -- 9
D AEW OO M Y_2000
Test step 2
Connect vacuum pump(14) with Y adapter to PLA
vacuum unit(5). Run the engine at idle speed.
Vacuum drops to ’0’ at approx. 30_C of the ther-
movalve.
YES
NO
Defective filter with restriction.
Stop the engine. Detach the filter with restriction.
YES
NO
Faulty thermovalve.
Defective filter with restriction.
Filter with restriction is clear.
Page 813 of 2053
SECTION 2A
SUSPENSION DIAGNOSIS
TABLE OF CONTENTS
Diagnosis..............................................................2A-2
General Diagnosis................................................2A-2Hub and Bearing.................................................2A-7
Page 814 of 2053

SSANGYONG MY2002
2A-2 SUSPENSION DIAGNOSIS
Inspect the tires for improper pressure and uneven wear.
Inspect the joint from the steering column to the steer-
ing gear for loose connections or wear.
Inspect the front and the rear suspension, the steering
gear, and the linkage for loose or damaged parts.
Inspect for out-of-round tires.
Inspect for out-of-balance tires, bent wheels, and worn
or loose wheel bearings.
Check the power steering pump serpentine belt tension.
Inspect the power steering system for leaks. Also, check
the power steering fluid level.Action
Checks
Checks
Inspect for incorrect toe on the front and the rear wheels.
Inspect for a twisted or a bent suspension arm. Inspect for mismatched or uneven tires.
Inspect for a broken or a sagging spring.
Inspect for a radial tire lateral force.
Check the front-wheel alignment.
Inspect for an off-center steering gear.
Inspect for front-brake dragging.
DIAGNOSIS
GENERAL DIAGNOSIS
Problems in the steering, the suspension, the tires,
and the wheels involve several systems. Consider all
systems when diagnosing a complaint. Some problems,
such as abnormal or excessive tire wear and scuffed
tires, may be the result of hard driving. Always roadtest the vehicle first. If possible, do this road test with
the customer.
Proceed with the following preliminary checks. Correct
any substandard conditions.
Preliminary Checks
Replace the tires.
Replace the spring.
Check the wheel alignment. Switch the tire and the
wheel assemblies. Replace the tires, as needed.
Align the front wheels.
Reseat the pinion valve assembly. Replace the pinion
valve assembly, as needed.
Adjust the front brakes.
Car Lead/Pull
Action
Adjust the toe on the front and the rear wheels.
Replace the suspension arm.
Scuffed Tires
Inflate the tires to the proper pressure.
Tighten the intermediate shaft pinch bolts. Replace the
intermediate shaft, as needed.
Tighten the front and the rear suspension. Tighten the
steering gear mounting bracket bolts. Tighten the inter-
mediate shaft pinch bolts. Replace the front and the rear
suspension, as needed. Replace the steering gear, as
needed. Replace the intermediate shaft, as needed.
Perform a free runout test. Match-mount the tires.
Balance the wheels. Replace the wheels. Replace the
wheel bearings.
Tighten the power steering pump serpentine belt.
Repair any leaks. Perform a power steering system test.
Add power steering fluid, as needed.
Action Checks
Page 815 of 2053

SUSPENSION DIAGNOSIS 2A-3
SSANGYONG MY2002
Perform a rack bearing preload adjustment.
Replace the seals and the hoses, as needed.
Lubricate the steering gear. Repair or replace the
steering gear, as needed.
Tighten the steering gear mounting bracket nuts and
the bolts. Check the steering gear preload adjustment.
Check the hydraulic system. Test the power steering
system pressure with a gauge.
Inspect for binding or catching in the steering gear.
Inspect for a loose steering gear mounting.Action ChecksBalance the tire or the wheel.
Measure the hub flange runout. Replace the hub, as
needed.
Adjust the brakes. Replace the brake rotor, as needed.
Replace the outer tie rods.
Balance the wheel.
Replace the lower ball joint.
Measure the wheel runout. Replace the wheel, as
needed.
Match-mount the tire and the wheel assembly. Inspect for an out-of-balance tire or wheel.
Inspect for excessive wheel hub runout.
Inspect for excessive brake rotor imbalance.
Inspect for worn tie rod ends.
Inspect for wheel trim imbalance.
Inspect for a worn lower ball joint.
Inspect for excessive wheel runout.
Inspect for excessive loaded radial runout on the tire
and the wheel assembly.Action ChecksAction
Balance the tire or the wheel. Checks
Inspect for an out-of-balance tire or wheel.Align the front and the rear wheels.
Adjust the toe on the front and the rear wheels.
Replace the spring.
Balance the tires.
Rotate the tires. Replace the tires, as needed.
Maintain the proper load weight.
Inflate the tires to the proper pressure. Check the front-wheel and the rear-wheel alignment.
Inspect for excessive toe on the front and the rear wheels.
Inspect for a broken or a sagging spring.
Inspect for out-of-balance tires.
Check for a failure to rotate tires.
Check for an overloaded vehicle.
Inspect for low tire inflation.
Abnormal or Excessive Tire Wear
Shimmy, Shake, or Vibration
Hard Steering
Wheel Tramp
Action Checks
Page 816 of 2053

SSANGYONG MY2002
2A-4 SUSPENSION DIAGNOSIS
Replace the tires.
Replace the ball joints and the outer tie rods.
Replace the dampeners.
Tighten the stabilizer link.
Replace the spring.
Perform a rack bearing preload adjustment.
Align the front and the rear wheels. Inspect for mismatched or uneven tires.
Inspect for lack of lubrication of the ball joints and the
tie rod ends.
Inspect for worn dampeners.
Inspect for a loose stabilizer link.
Inspect for a broken or a sagging spring.
Check the steering gear preload adjustment.
Check the front-wheel and the rear-wheel alignment.Action ChecksReplace the ball joints and the outer tie rods.
Replace the damaged suspension components.
Replace the control arm bushings or the tie rods.
Tighten the stabilizer link.
Tighten the wheel nuts.
Tighten the suspension bolts or the nuts. Inspect for a lack of lubrication of the ball joints and
the tie rod ends.
Inspect for damaged suspension components.
Inspect for worn control arm bushings or tie rod ends.
Inspect for a loose stabilizer link.
Inspect for loose wheel nuts.
Inspect for loose suspension bolts or nuts.Action Checks Inspect for lack of lubrication of the ball joints and the
tie rod ends.
Inspect for binding in the ball joints.
Inspect for binding in the steering column.
Check the front-wheel alignment.
Check the steering gear preload adjustment.
Inspect for a sticking valve.
Inspect for binding in the intermediate shaft on the
steering gear.Action ChecksReplace the front wheel bearings.
Tighten the steering gear mounting bracket nuts and
the bolts.
Tighten the intermediate shaft pinch bolts. Replace the
intermediate shaft, as needed.
Perform a rack bearing preload adjustment. Inspect for worn or loose front wheel bearings.
Inspect for a loose steering gear mounting.
Inspect the joint from the column to the steering gear
for loose connections or wear.
Check the steering gear preload adjustment.Action Checks
Replace the ball joints and the outer tie rods.
Replace the ball joint.
Lubricate the steering column. Replace the steering
column as needed.
Align the front wheels.
Perform a rack bearing preload adjustment.
Lubricate the pinion valve assembly. Replace the pin-
ion valve assembly, as needed.
Replace the intermediate shaft.
Poor Returnability
Abnormal Noise, Front Suspension
Abnormal or Excessive Tire Wear
Too Much Playin Steering