Midland SIDE DUMP GRAVEL TRAILER Operator's Manual page 73

5.2.8 BRAKES (cont'd)
A. Removing Brakes:
1. Position the trailer on a level hard surface.
2. Exhaust all the air from the air system.
3. Jack the axle up and place on safety stands.
4. Remove the wheel assembly from the axle.
5. Release the slack adjuster (Refer to Section
5.2.6).
6. Disable or cage spring brakes if so equipped.
7. Drain oil from hub and remove spindle end
components.
8. Remove the hub and drum assembly.
Support with a hoist as the assembly slides
off the spindle. Use a puller if required.
9. Remove roller retaining clip from the bottom
and top brake shoe cam rollers.
10. Disconnect and remove bottom shoe return
spring.
11. Rotate bottom shoe to remove retaining
springs.
12. Lift top shoe to remove.
13. Disconnect push rod from slack adjuster.
14. Back off and remove slack adjuster.
15. Remove cam shaft.
Description
1. Hub-cap bolts
2. Hub fill plug
3. Adjustment nut - manual bearing ad-
justment (double nut)
4. Jam nut - manual bearing adjustment
5. Brake mounting bolt
6. Two-piece dust shield bolts (shown)
• Forged spider
7. Bolt-on bushing bolts
8. Cam bushing bolts
9. Air chamber nuts
Fig. 58 BRAKE/WHEEL END COMPONENTS
B. Installing Brakes:
1. Inspect all the components. Replace any that
are cracked, bent or worn.
2. Lubricate the camshaft spline, slack adjuster
gear and slack adjuster pins with anti-seize
compound.
3. Install cam shaft and slack adjuster. Secure
with snap rings.
4. Adjust slack adjuster to its required angle
and attach to the push rod. Release slack
adjuster pawl if so equipped.
5. Use a good quality brake grease to lubricate
the anchor pins and rollers where they
contact the brake shoes.
6. Place the upper shoe in position.
7. Place the lower shoe in position and attach 2
new retaining springs.
8. Rotate lower shoe forward and attach new
brake shoe return spring.
9. Install both cam rollers and secure with
retainers.
10. Install and secure the remaining wheel and
components.
11. Repeat with other wheel ends as required.
12. Tighten all fasteners to their specified torque.
Torque Range
N.m
(lb-ft)
10-15
13-20
15-20
20-27
Tighten to 100,
136
loosen, tighten
68
to 50, loosen
1/4 turn
250-300
340-408
130-165
177-224
15-20
20-27
25-35
34-48
25-35
34-48
80-125
109-170
Fastener
Size
5/16"
3/8"
Size depends on axle model
and ajustment method.
5/8"
3/8"
3/8"
3/8"
5/8"
61