The installation tool mentioned in the text is required for removing and installing the brake shoe springs. In its absence, to facilitate the work, it is necessary to remove the rear wheel hub. On fig. 257 shows a section of the parking brake.
Pic. 257. Section of the parking brake.
1 - support,
2 - bolts,
3 - locking bar,
4 - hub housing,
5 - inner tapered roller bearing,
6 - inner seal,
7 - gland ring,
8 - nut,
9 - remote bushing,
10 - parking brake cable,
11 - protective cover,
12 - brake disc,
13 - support partition,
14 - locating pin,
15 - rear wheel hub,
16 - outer tapered roller bearing,
17 - dustproof ring,
18 - outer gland,
19 - parking brake base,
20 - brake pads,
21 - emphasis,
22 - adjusting nut,
23 - spacer sleeve,
24 - clamping spring,
25 - bolt with spring washer,
26 - pin,
27 - spacer stopper,
28 - a bolt with an internal hexagon and a spring washer,
29 - top spring,
30 - bolt and spring washer,
31 - lower spring.
Remove caliper with brake hose.
Remove brake disc.
Disconnect the lower spring.
Rotate the rear wheel hub so that the threaded hole in the hub is against the spring (1) in fig. 258.
Pic. 258. Removal and installation of parking brake pads.
1 - clamping spring,
2 - brake pads,
3 - emphasis,
4 - adjusting nut,
5 - parking brake base,
6 - protective cover,
7 - spacer sleeve,
8 - top spring,
9 - lower spring,
10 - support partition,
11 - spacer stopper.
Using assembly tool 112 589 09 061 00, pull back the spring, turn it by 90°and remove the spring.
Remove the spring from the second pad.
Stretch the pads relative to each other so that they can be removed through the rear wheel hub.
Remove the pin from the expansion stop.
Disconnect the spacer from the parking brake cable (see fig. 259).
Pic. 259. Section of a spacer stopper. Designations are shown in fig. 257.
When installing the brake pads, do the following:
Apply Molycote paste to all working surfaces of the expansion stop.
Install the pin for the drive cable and the expansion stopper.
Press the expansion stop against the protective cover.
Apply a longlife lubricant to the threads of the stop and the cylindrical surface of the adjusting nut.
Assemble the adjustment device. Screw the stop all the way into the spacer sleeve.
Install the adjusting device between the ends of the brake shoes so that the adjusting nut is forward in the direction of travel.
Install the upper spring onto the brake pads.
Pull the brake pads apart, put on the rear wheel hub, install a spacer between the ends of the pads.
Install the pressure spring into the brake shoe.
Using the aforementioned assembly tool, stretch the pressure spring through the threaded hole in the hub, turn it by 90°and fix it on the protective cover.
Using assembly tool 116 589 016 200, install the spring first on one brake shoe and then on the other.
Install brake disc and caliper.
Adjust parking brake.