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REAR BRAKE - AXLE TA268
The following information was obtained from the manufacturer
manual. The complete manual can be downloaded from the
manufacturer web site:
http://www.axletech.com/service_manuals/pdf/standard/
MM4H.pdf
Description
Current Taylor-Dunn
®
However, there is the possibility that the original
brakes were replaced with aftermarket parts
containing asbestos. Since this possibility exists, all
brake parts should be handled as if they contain
asbestos. Refer to Appendix for recommended
handling precautions.
DSH Brake (Duo Servo Hydraulic)
The DSH brake is a 12.50 x 2.50 (317.5 mm x 63.5 mm)
hydraulic actuated brake. The duo servo design permits the
leading shoe to transfer all of its force through the adjusting
bolt to the trailing shoe. This increases the braking action,
because the force from both shoes is transmitted into the
anchor of the trailing shoe. The brake has automatic adjustment
and can be supplied with an optional cable operated lever for
parking brake linkage.
Disassemble DSH Brake
To prevent serious eye injury, always wear safe eye
protection when you perform vehicle maintenance
or service.
Block the wheels to prevent the vehicle from moving.
Support the vehicle with safety stands. Do not work
under a vehicle supported only by jacks. Jacks can
slip and fall over. Serious personal injury can result.
1.
Make sure the vehicle is on a level surface.
2.
Place blocks under the wheels not being serviced to keep
the vehicle from moving.
3.
Raise the vehicle so that the wheels to be serviced are off
the ground. Support the vehicle with safety stands.
4.
Remove the wheels and brake drums from the axle. If
necessary, manually retract the brake shoes through the
forward adjustment slot so that the brake drums will clear
the linings. Insert a stiff wire or pick through the adjustment
slot to push the automatic adjustment stamped spring
away from the star wheel while using an adjusting tool to
rotate the adjustment bolt star wheel.
5.
Remove the fastener that attaches the automatic adjusting
wires and the pivot to the leading shoe.
Maintenance, Service, and Repair
brakes are asbestos free.
6.
Remove the two brake shoe return springs from the anchor
pins.
7.
Support the leading shoe with one hand and remove the
shoe hold-down spring clip. Lift and rotate the spring clip
until it is released from the retainer pin.
8.
Remove the shoe spring and the adjustment bolt at the
bottom of the brake.
9.
Support the trailing shoe with one hand and remove the
two shoe hold-down spring clips. Lift and rotate each spring
clip until it is released from the retainer pin.
10. If the brake has a parking brake lever, disassemble the
link from the leading shoe by removing the spring clip. To
disassemble the parking lever from the trailing shoe,
remove its spring clip.
11. Remove the anchor pins from holes.
12. If complete disassembly is necessary, disconnect the
hydraulic line and remove the wheel cylinder capscrews
and the wheel cylinder.
13. Clean and inspect all parts.
Assemble DSH Brake
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 Mentor specification
0-616 brake lubricant such as Texaco Thermatex EP-2
grease or equivalent to the following parts:
a. Adjustment bolt assemblies.
b. All edges of brake levers and shoes that slide against
each other.
c. Push rod ends of the wheel cylinder.
d. Anchor pins, anchor pin holes and anchor pin slots.
2.
Install the wheel cylinder to the backing plate. Tighten the
wheel cylinder capscrews to 15-20 lb. ft. (20-27 Nm).
3.
If used, install the parking brake lever on the trailing shoe
and the parking brake link on the leading shoe.
4.
Install the two anchor pins in the holes in the backing plate.
5.
Put the trailing shoe in position into the anchor pin slot
and engage it with the wheel cylinder push rod.
Brake Service
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