8-24
Published 01-29-2014, Control # 496-00
UNDERCARRIAGE TMS800E SERVICE MANUAL
1. Set the parking brakes and block the wheels.
2. Raise the carrier so that the front wheels are off the
ground. Support with safety stand.
3. If the brake has spring chambers, carefully cage and
lock the spring so that the spring can not actuate during
disassembly.
4. Fully release the automatic slack adjusters so that the
brake shoes retract and the drum clears the linings.
5. Remove the hub cap, axle spindle nut, and washer.
6. Rock the drum and pull outward until the outer wheel
bearing can be removed.
7. To remove the drum, pull outboard while rocking from
side to side.
8. Pry the roller retainer loops out of the shoe web holes.
Pivot the roller retainer to swing the loops clear of shoe
webs (Figure 8-14).
9. Push down on the bottom brake shoe. Pull on the brake
shoe roller retainer clip to remove the bottom roller
(Figure 8-15).
10. Lift the top brake shoe and pull on the brake shoe roller
retainer clip to remove the top roller.
11. Lift the bottom shoe to release the tension on the brake
shoe return spring (Figure 8-16).
12. Rotate the bottom shoe to release the tension on the
brake shoe retainer springs (Figure 8-17).
13. Remove the shoe retainer springs and the brake shoes.
Item Description
13 Cast Brake Spider
14 Chamber Bracket Seal
15 Camshaft and Chamber Bracket
16 Chamber Bracket Capscrew
17 Grease Fitting
18 Thick Camshaft Washer
19 Automatic Slack Adjuster
20 Spacing Washer
21 Camshaft Snap Ring
22 Dust Shield
23 Dust Shield Capscrew
24 Plug
WARNING
Sudden release of a compressed spring can cause
serious personal injury.
CAUTION
Do not strike the axle shaft flange with a hammer. Do not
use chisels or wedges to loosen shaft or dowels.
CAUTION
Do not force the drum. Excessive force may damage
brake components.
Reference Only
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