Replace tires

AR40.10-S-1030E

Replace tires

23.01.2020

Model

447, 448

Modification notes

22.01.2020

Work procedure updated.

The whole document

43a

Balance weight

43g

Valve

X

Distance

Y

Distance

Shown with code RY2 (Tire pressure monitor)

1

Tire pressure sensor

2

Union nut

3

Valve body

3a

Screw

3s

Shoulder seal

43g

Valve

Topical note

Information on tires / rims

AH40.10-P-9411-01A

Topical note

General information on rim / tire conversions

AH40.10-P-1050-01A

Topical note

Limited maximum speed for winter tires with speed index V

AH40.10-P-1020-03A

Information about regulations for recommended wheel/tire combinations

AH40.10-P-0003-01A



Remove

1

Remove respective wheel and tire assembly.

AR40.10-S-1100E

2.1

Remove valve element from valve (43g).

Model 447, 448
except code RY2 (Tyre pressure monitoring system)

2.2

Remove valve element from tire pressure sensor (1).

Model 447, 448
with code RY2 (Tyre pressure monitoring system)

3

Remove wheel balance weights (43a).

 Assembly tool

*124589176300

 Warning

Risk of poisoning caused by swallowing the TIREFIT emulsion. Risk of injury caused by skin contact and eye contact with the TIREFIT emulsion. Risk of fire caused by ignition of the TIREFIT emulsion

Do not swallow or come into contact with the TIREFIT tire sealant, which is an emulsion of rubber and terpene phenolic resin. No open flames or open light sources.

AS40.10-Z-0001-01A

4

Extract tire sealant from respective tire.

In tires that were filled with TIREFIT tire sealant.

AR40.10-S-1080E

5

Position bead breaker shovel of tire mounting device opposite valve (43g) at tire bead.



000 588 00 83 00 Tire mounting device

WS40.00-P-0006B


Do not position on the tire side wall, but on the bead flank only.
The carcass can otherwise be damaged.

6

Pry off tire on inside and outside over safety bead seat of disk wheel.


Model 447, 448
with code RY2 (Tyre pressure monitoring system)
Do not exert any force on the tire pressure sensor (1).
Otherwise it will be damaged.

 Model 447, 448
with code RY2 (Tyre pressure monitoring system)
When prying off tire bead, start on outside of disk wheel opposite tire pressure sensor (1).

7

Clamp disk wheel on tire mounting device.

8

Coat rim flange and tire beads with commercially-available tire mounting paste.

9

Align assembly head at a small distance (X) and distance (Y) to the disc wheel.

10

Position disk wheel at mounting head of tire mounting device.


Model 447, 448
with code RY2 (Tyre pressure monitoring system)
Do not exert any force on the tire pressure sensor (1).
Otherwise it will be damaged.

 Position the disk wheel in the direction of rotation such that the valve (43g) is approx. 10 cm in front of the mounting head.

11

Detach tire.

 To do so, pry the tire bead over the assembly lug using an assembly lever.

12

Remove valve (43g).

Model 447, 448
except code RY2 (Tyre pressure monitoring system)



Check

13

Check condition of disk wheel.

AR40.10-P-1010-01A

14

Check tire pressure sensor (1), union nut (2), valve body (3), screw (3a) and shoulder seal (3s) in installed condition.

Model 447, 448
with code RY2 (Tyre pressure monitoring system)


Do not remove tire pressure sensor (1). Do not retighten screw (3a) and union nut (2).
Otherwise, the tire pressure sensor (1) will be damaged.

If tire pressure sensor (1), valve body (3), shoulder seal (3s) are damaged, or if union nut (2) or screw (3a) are loose:



Replace tire pressure sensor (1).

Remove/install tire pressure sensor

AR40.15-S-0081E



Install

15

Install new valve (43g).

Model 447, 448
except code RY2 (Tyre pressure monitoring system)

 Install a new valve (43g) without valve element.

16

Coat rim flange and tire beads with commercially-available tire mounting paste.

17

Align assembly head at a small distance (X) and distance (Y) to the disc wheel.

18

Place new tire at angle onto disk wheel, and pull on over the rim flange using tire mounting device.


Model 447, 448
with code RY2 (Tyre pressure monitoring system)
Do not exert any force on the tire pressure sensor (1).
Otherwise it will be damaged.

 Observe the running direction on tires with specified running direction. Put as little stress as possible on bead area.

19

Align light spots of tire and disk wheel with each other.

20

Remove disk wheel with tire from tire mounting device.

21

Inflate tire.

 Inflate tire without valve element to a maximum of 3 bar. The tire must slide evenly over the safety bead seat of the disk wheel.

If necessary,



Coat the tire beads again with commercially available tire mounting paste.

22.1

Turn new valve element into valve (43g).

Model 447, 448
except code RY2 (Tyre pressure monitoring system)

22.2

Turn new valve element into tire pressure sensor (1).

Model 447, 448
with code RY2 (Tyre pressure monitoring system)

23

Correct tire pressure to specified value.

Tires - General information

AH40.10-N-1020-01A



Correct tire pressure, including spare wheel

AP40.15-S-4060E

24

Balance wheel and tire assembly.

AR40.10-S-1040E

25

Install wheel and tire assembly.

AR40.10-S-1100E