4
Section 2
Hydraulic Brakes
9. Clean and inspect all parts. Refer to Section 4.
Assemble DLH Brake
CAUTION
Do not permit grease to contact the brake drum or
linings. Grease on the linings can cause poor brake
performance. Contaminated linings MUST be
replaced.
1. Before assembly, apply a thin layer of Meritor
specification 0-616 brake lubricant such as Texaco
Thermatex EP-2 grease or equivalent (listed on
page 31) to the following parts:
a. Adjustment bolt assemblies.
b. Anchor pins, anchor pin holes and anchor
pin slots.
c. Push rod ends of the wheel cylinders.
d. The surfaces of the guide washers that slide
against the brake shoes.
2. Install the wheel cylinder to the spider. Tighten the
wheel cylinder capscrews to 15-20 lb. ft.
(20-27 N•m).
3. Install the two adjustment bolt and star wheel
assemblies into their threaded holes. The end of
each adjustment bolt must extend into the slot for
the shoe approximately 0.125 inch (3.175 mm).
Install each star wheel clip with its screw and lock
washer.
4. Install the two anchor pins, with their slots in
position to engage the shoes, in the anchor pin
holes.
5. Install both shoe guide bolts into their holes from
the back of the spider and assemble one spacer
and one washer on each bolt.
6. Place one shoe in position to engage the anchor
pin slot, the adjustment bolt slot and the wheel
cylinder push rod. Install a shoe guide washer
and nut to the shoe guide bolt.
7. Put the other shoe in position to engage the
opposite anchor pin slot, adjustment bolt and
wheel cylinder push rod. Install a shoe guide
washer and nut to the shoe guide bolt.
8. Tighten the shoe guide nut on each shoe guide
bolt until there is no clearance between the
washer and the shoe. Loosen the nut 1/2 turn
and install the cotter pins.
9. Install the four shoe return springs.
NOTE: The bleeder cylinder can be installed at either
the top or bottom positions on the brake. In either
installation the bleeder outlet MUST be installed at
the top of the cylinder. Figure 2.3.
10. Install the hydraulic brake tube assembly to the
two wheel cylinders.
11. Connect the hydraulic line and install the brake
drum and wheel.
12. Bleed the hydraulic system after all brakes are
assembled and adjusted. (See page 19.)
Figure 2.3
TOP CYLINDER
BLEEDER
INLET-FLUID LINE
HYDRAULIC
TUBE
BOTTOM CYLINDER
BLEEDER
INLET-FLUID LINE
HYDRAULIC
TUBE
BACK VIEWS
