Great Wall hover, Service Manual

Page: 164 / 425

thickness Component No. thickness Component No.
Adjustment of front and rear brake belt
1. Setting procedure of brake belt
The setting procedure of brake belt is shown as follows:
a. For the calculating method of front servo mechanism thrust lever refer to Figure 8.62, dimension; standard A.
.Allow the air pressure is in 650/700kPa in the operating area of front servo mechanism (external of B1), (refer to
Figure 8.63).
. The forward dimension of thrust lever minus 3mm.
Dimension requirement for selection of shim:
Caution:
The small shim requires that the shim size is 1mm always; the available thickness is listed in Table 8.2.
. Release air.
b. Proper shim to end of thrust lever pole.
Check the shim for damage, worn or corrosion; replace it if necessary.
The shim is installed on the support surface between the transmission and pole flange, refer to Figure 8.62.
Install the shim by hand, and not the hammer or pressure.
Press the shim by hand until has the click the noise. The noise means the shim is clamped by the housing correctly.
c. Recheck the stroke of thrust lever 3mm 0.25mm.
2. Setting procedure of rear brake belt
The setting procedure of rear brake belt is shown as follows:
a. The setting of distance A is form the back surface of servo piston to inner surface of transmission, use the vernier caliper. Refer
to Figure 8.64.
A allows the air pressure of 650/700kPa is in the front servo mechanism operating area (external of B2), (refer to Figure
8.63).
Deduct 3.75mm from the movement of piston and use the 2.5 mm shim to divide the rest distance.
Caution:
The small shim requires that the shim size is 1mm always; the available thickness is listed in Table 8.2.
. Release air.
b. Select the proper shim for end of thrust lever pole.
Check the shim for damage, worn or corrosion; replace it if necessary.
The shim is installed on the support surface between the transmission and pole flange, refer to Figure 8.64.
Install the shim by hand, and not the hammer or pressure.
Press the shim by hand until has the click the noise. The noise means the shim is clamped by the housing correctly.
c. Recheck the stroke of piston for 3.75mm 0.625mm.
Table 8.2 Effective thickness of shim