Brake Cylinder Service
Disassembly
1. Disassemble brakes as described in Brake Service.
2. Disconnect brake line from brake cylinder. Put a cap
on brake line to prevent contamination of system and
brake fluid leakage.
3. Remove two (2) capscrews and lockwashers secur
ing brake cylinder to backing plate (Fig. 12). Remove
brake cylinder assembly.
4. Remove dust covers (Fig. 11, Item 1), pistons (Item
2), seals (Item 3) and spring (Item 4). Discard dust cov
ers and seals.
Inspection
1. Clean all metal parts with isopropyl alcohol, then
clean out and dry grooves and passageways with com
pressed air. Make sure cylinder bore and component
pieces are thoroughly clean.
2. Check cylinder bore and pistons and spring for dam
age or excessive wear. Replace brake cylinder assem
bly if signs of pitting, scoring or cracks are evident.
Assembly
1. Apply a film of clean brake fluid to new piston seals
(Item 3), then install onto pistons (Item 2).
2. Apply a film of clean brake fluid to cylinder bore and
piston assemblies. Carefully install one piston, the
spring (Item 4), then the other piston.
3. Install new dust covers (Item 1).
4. Install brake cylinder assembly to backing plate with
two (2) capscrews and lockwashers.
5. Connect brake line to brake cylinder.
6. Reassemble brakes as described in Brake Service.
7. Bleed brakes.
Steering, Brakes and Suspension
6)
5)
1. Dust cover
2. Piston
3. Seal
4. Spring
Page 7 – 14
1)
2)
7)
3)
4)
Figure 10
5. Bleed screw
6. Bleed screw cap
7. Body
Workman 3000 Series