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Wheels and Tires General

Tube Type Tire

Generals ....................................................... WT -2 Specifications ............................................... WT -3 Troubleshooting ............................................ WT -4

Components ................................................. Disassembly ................................................. Inspection ..................................................... Reassembly ..................................................

WT -11 WT -12 WT -14 WT -14

Wheel and Tire Components ................................................. Removal ....................................................... Installation .................................................... Inspection .....................................................

WT -5 WT -6 WT -7 WT -9

Tubeless Tire Components ................................................. WT -17 Disassembly ................................................. WT -17 Reassembly .................................................. WT -18

General Generals

EMTWT5004A

Wheel

[Generals] The wheel and tire are assembled in a body and rotated together.By the air pressure inside of the tire, the tire can sustain the vehicle's weight. The air pressure acts as a buffer so as to absorb the shocks from the road surface. As a result, tire plays an important role for enhancing the ride value of the vehicles.In addition, by the frictional force between the tire and the road surface, it is possible to run, to stop and to change direction.

[Size of Tire and Wheel]

Bias Tire EMTWT5003A

EMTWT5001A

Radial Tire

EMTWT5005A

EMTWT5002A

Specifications Specification Item

HD65

Size STD

Air Pressure kgf/㎠(PSI)

Size Option

Air Pressure kgf/㎠(PSI)

Narrow

7.00R16-10PR

5.0(71)

205/75R 17.5-10PR

7.0(100)

Narrow Low-Bed

195R15-12PR

5.9(84)

-

-

Wide

7.00R16-12PR

6.0(85)

205/75R 17.5-10PR

7.0(100)

Wide Low-Bed

195R15-12PR

5.9(84)

195/75R 16-10PR

5.9(84)

HD65

Wide

205/75R 17.5-10PR

7.6 (110)

HD72

Wide

7.50R16-12PR

6.5(93)

7.50R16-14PR 8.50R17.5-12PR

7.4(105)6.3(90)

HD78

Wide

7.50R16-12PR

6.5(93)

7.50R16-14PR 8.50R17.5-12PR

7(100)6.3(90)

Wide Short-Axis

7.50R16-14PR

7.0(100)

-

-

8.50R17.5-12PR

6.3 (90)

HD78

Wide

Service Standard Inspection Items

Reference Value

Remedy and Remark

Plane Figure of Disk Wheel (Hub Surface)

0.5 mm or less

-

Disk Wheel

Replace and Correction

Front

Vertical Run Out Side Run Out

1.7mm or less 1.8mm or less

Rear

Vertical Run Out Side Run Out

1.7mm or less 1.8mm or less

Tire Vertical Run Out

3.5mm or less

Replace

Tightening Torque Tightening Torque Items Nm

kgf·m

Ib-ft

Front Wheel Nut

539~588

55~60

398~434

Rear Wheel Nut

539~588

55~60

398~434

TROUBLESHOOTING Item Uneven Wear on Tire

Tire air leak

Tire damage

Causes of Troubles Wear at center of Tread

Tire Air pressure is too high

Wear at edge of Tread

Tire Air pressure is too low

Remedy Air pressure controlling

Overload

Not overload

Wheel alignment is defective

Control

Air valve is defective

Replace

Tire tube is damaged

Repair or Replace

Tire has cracked

Improper Air pressure

Replace the Tire

Tire material is weakened Tire is damaged due to drive on wild road Inside wall of Tire is peel Tire is overheated (frictional heat due to Replace off drive with overload for a long time) Improper Air pressure Tire material is weakened Tire puncture

Tire is pierced by a sharp material such as nail Tire is weakened

Wheel and Tire Components This illustration shows the LHD type. RHD type is symmetrical.

EMTWT5006A

Removal [Front tire] 1. Place the wooden block(A) at the front and rear of rear wheels.

b. As the wheel bolt is distinguished in right-hand type and left-hand type, be careful when the wheel nut is removed.The right-hand type has “R” mark, while the left-hand type has “L” mark.

KMTPA201A KMTPA203A

2. Loosen the wheel nut (A). Lift up the axle with garage jack (B) and support the frame with a safety stand(C).

[Rear Tire] 1. Place the wooden block(A) at the front and rear of the front wheels.

KMTPA202A KMTPA401A

3. After removed the wheel nut (A), removed the wheel and tire (B) from hub (C). CAUTION a. When removing wheel and tire (B), be careful that hub bolt is not damaged.

2. Loosen the wheel nut.

KMTPA403A

Lift up the axle with garage jack (A) and support the frame with a safety stand(B)

Installation WARNING a. Replace the wheel with the steel or aluminum wheel installed as a default part. Do not install different type of wheels . b. If you want to replace the wheel with different type, you should replace the hub stud and wheel nut also

[Front tire] NOTICE a. Clear the thread surface of the wheel bolt and the wheel nut being installed. b. Before the installation, coat wheel bearing grease at the wheel bolt and nut. 1. After install the wheel and tire (B) to the hub (C), tighten the wheel nut (A) in the diagonal order.

KMTPA402A

CAUTION When installing the tubeless tire, the air valve should be aligned with the notch of brake drum.

3. After removing the wheel nut (A), remove the wheel and tire (B) from hub (C). CAUTION a. When removing wheel and tire (B), be careful that hub bolt is not damaged. b. As the wheel bolt is distinguished in right-hand type and left-hand type, be careful when the wheel nut is removed.The right-hand type has “R” mark, while the left-hand type has “L” mark.

KMTPA203A

2. Removed the garage jack (B) supporting the axle and the safety stand (C) supporting frame. Tighten the wheel nut (A) with specified torque. Tightening torque : 539~588 Nm (55~60 kgf·m, 397.8~434 lb-ft)

[Rear tire] NOTICE a. Clear the thread surface of the wheel bolt and the wheel nut being installed. b. Before the installation, coat wheel bearing grease at the wheel bolt and nut 1. After install the wheel and tire (B) to the hub (C), tighten the wheel nut (A) in the diagonal order. CAUTION When installing the tubeless tire, the air valve should be aligned with the notch of brake drum.

KMTPA202A

3. Remove the wooden block (A) from the front and rear of the rear wheel.

KMTPA403A

KMTPA201A

2. Removed the garage jack (A) supporting the axle and the safety stand (B) supporting frame. Tighten the wheel nut with specified torque.

Inspection 1. Measure the tire air pressure. If need, control the pressure with the specification.

Tightening torque : 539~588 Nm (55~60 kgf·m, 397.8~434 lb-ft)

KWT1003A

2. Measure tread length of the tire. KMTPA402A

3. Remove the wooden block (A) from the front and rear of the front wheel.

Tread length (limit) : 1.6mm NOTICE a. If the tread length is less then 1.6mm, then mark for wear limit is shown. b. If the tire is worn unevenly or abnormally, even the limit mark is shown, then the tire should be replaced.

KMTPA401A KWT1004B

3. Check the tire if there are worst damage (A) and crack (B), if need, replace the tire.

5. If the tire vertical run out exceeds the nominal value, perform a correction as following method. 1. Make marking (A) on the wheel and hub bolts of tire side. 2. Remove the tire from the wheel. Re-install the tire with being aligned to the mark (A). 3. Measure the run out of the disk wheel. If the portion having large run out is near the marking (A), then rotate the tire with 180° from the mark and then install the tire. 4. Measure again the tire vertical run out. 5. If the run out is of the nominal value after the correction, replace the tire and wheel assembly.

KWT1005A

4. Measure the tire vertical run out. Nominal value : 3.5mm

KWT1007A

KWT1006A

Tube Type Tire Components

EMTWT5007A

3. By inserting a lever (B) at the edge portion of the side ring (A), push the bar (C) into the get between the lever and the side ring.

Disassembly 1. Drain out all air from the tire (A).

KWT1011A

4. Push the bar (A) into the center of the tire. Insert the lever (B) between the side ring (C) and wheel rim (D). KWT1009A

2. Insert a bar (B) between the side ring (A) and tire bid. Press the bar up and down along with the circumference of the ring.

CAUTION When the half portions of the side ring are removed, remained portions of the side ring will be automatically removed. At the time be careful that the side ring may abruptly spring up.

KWT1010A KWT1012A

5. Push the air valve (A) into the valve hole of the wheel rim.

7. Insert a lever (A) between the bid positioned near the air valve and the wheel rim. Push the rim to remove.

CAUTION A valve should be capped by a valve cap (B) for preventing the thread surface of the air valve from being damaged.

CAUTION Be careful that the wheel (B) may be removed suddenly.

KWT1015A KWT1013A

6. Set up the tire (A) vertically and press the center of tire lightly.

8. Lay down the tire (A). After remove the flap, take out the tube (B).

CAUTION Be careful that the wheel (B) may be removed suddenly.

KWT1016A

KWT1014A

2. Checking the vertical, horizontal run out of the wheel.

Inspection 1. Checking the flatness degree of the wheel a. Using a dial gauge (A), measure the flatness the degree at the 170mm and 270mm of the wheel (B) diameters. b. For measuring the flatness the degree, perform the measurement at least 16 points positioned with sufficient distance there between in the wheel diameter. The flatness degree of the wheel is the difference between the measured maximum value and the minimum value.

Using a dial gauge (A), measure the vertical, horizontal run out of the wheel(B).If the measurement exceeds the specification, replace the wheel. Vertical run out : 1.7mm or less Horizontal run out : 1.8mm or less

c. If the flatness degree exceeds the specification, replace the wheel. Flatness degree of the wheel (hub surface) : 0.5mm or less

KWT1018A

Reassembly 1. After inject air into the tube (A) a little, insert the tube into the tire (B).

KWT1017A

KWT1019A

2. Insert on air valve (B) into the valve hole of the flap (A). Insert the flap into the tire (C).

4. Take the wheel (A) into the tire. Install the side ring (B) at the ring groove. CAUTION The edge surface of the ring side should be offset from the air valve at least 15cm.

KWT1020A

3. Lay down the wheel (A) on the ground. Insert the air valve (B) into the valve hole KWT1022A

5. By pressing the edge portion of the side ring (A) on foot, install the side ring with the lever (B) CAUTION Be ensured that the side ring should be inserted completely.

KWT1021A

KWT1023A

6. Inject air into the tire.

8. Adjust the balance of the wheel and tire.

CAUTION After inserting a iron bar (A) into the wheel and being apart from the tire, inject air little by little.

NOTICE a. The dynamic balance value should be 40g at each side of the rim. b. There are 2 balance weight inside and outside axis, respectively. The maximum value of one side should below. The maximum value of one side HD65

less than 160g

HD72, HD78

less than 230g

c. If the unbalance amount exceeds 270g(HD72, HD78), 200g (HD65) at one side before adjusting the tire balance, disassemble the tire and reassemble.

KWT1024A

7. Check whether the side ring is firmly assembled with the wheel and weather the air leaks from the air valve.

KWT1025A

Tubeless Tire Components

EMTWT5008A

2. Press the side portions of the tire to form a gap between the wheel rim and the tire bid.

Disassembly 1. Drain out all air of the tire.

KWT1027A

KWT1028A

3. Apply soap water on the surface of the tire bid and the wheel rim. 4. Lay down the tire so as the wheel disk(A) surface to contact ground. Using a lever (B), apply force along with the circumference of the rim to disassemble some portion of the rim from the tire(C).

KWT1031A

Reassembly 1. Assemble the air valve (A) slightly.

KWT1029A

CAUTION Cover a valve cap (B) at the valve for preventing its thread surface from being damaged.

5. Turn up the tire so as the wheel disk surface (A) to face up. By inserting the lever (b) between the tire bid and the wheel rim, apply force to remove the wheel.

KWT1030A

KWT1032A

2. Apply soap water on the surface of the tire bide and wheel rim. 3. Lay down the wheel so as the surface of wheel disk to face down to the ground. Push the tire to assemble some portions of the tire bed with wheel rim.

4. Insert a lever (A) between the wheel rim and tire bid. By pulling the lever to the side of the tire (B), assemble the other portion of the tire bid with the wheel rim.

KWT1033A

5. With pressing the tire (A) on foot, push down the tire bid and pull up the wheel using another lever. NOTICE Until the tire is assembled with the tire completely, continue this action along with the circumference of the wheel.

KWT1034A

6. Inject the air into the tire. CAUTION After insterting a iron bar(A) into the wheel and being apart from the tire, inject air little by little

KWT1024A

7. By applying soap water between the rim flange and the tire bid, check if there are air leaks.