GREAT PLAINS NTA3007HD, Operator'S Manual

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Great Plains | 166-207M | 02/26/2019 Table of Contents Index 124
NTA907HD and NTA3007HD Table of Contents Index Maintenance and Lubrication
Install New Brake Shoes
Refer to Figure 136
Brake shoe orientation is with square hold-down bolt
hole
on top, and “L”-shaped adjuster mount lugs
facing away from spindle.
36. Engage bottom web notch of shoe with backing plate
pivot bolt . Apply a thin film of Lubriplate® 110 or
similar to that part of the web which is near and
under the plate held by the pivot bolts. Engage top
web notch of shoe with cylinder rod clevis
.
37. Loosely secure shoe to backing plate with shoe
hold down bolt , large flat washer , two spring
washers , and castellated nut . Do not install the
cotter pin at this time.
 The spring washers are slightly cupped. Place
them on the bolt with the concave (dished-in) sides
facing each other “ () ”.
38. Tighten the castle nuts until the spring washers
are flattened. Back the nut off 1/6 turn, plus enough
to align the bolt’s hole with notches in the nut. Secure
castle nuts with cotter pin
.
39. Insert five backing plate studs through dust cover
and spindle weldment. Secure with lock washers
and
1

2
-13 nuts .
Re-Install Springs
Refer to Figure 137
40. With link arm toward front of drill, insert parking
brake arm assembly from spindle side of backing
plate, through lower slots in brake shoes.
41. Insert double-bend end of parking brake spring in
hole at rear end of parking brake arm. Hook single-
bend end at small notch in forward arm.
42. At adjuster lugs (top of shoes), insert the double-
bend end of a brake shoe spring through the hole
closer to the shoe web. Hook the single-bend end
through the matching hole on the other shoe.
43. Hook the double-bend end of the remaining spring
through a lower round hole in a shoe web. Hook
the single-bend end through the matching hole in the
other shoe.
44. Place adjuster assembly on adjuster lugs . The
adjuster pawl is up and to the right as you face the
spindle. Secure with cotter pins .
45. Tighten pivot bolts to
5

8
-18 torque specification.
Figure 136
Install Brake Shoes
29642
3
2
4
6
5
7
8
9
1
8
a
d
c
b
2 3
1
4
5
6 7
8 9
8
9 8
a
Leave self-adjuster relaxed. It self-adjusts at first use.
Figure 137
Re-install Brake Springs
29642
2
1
3
4
5
6
7
8
9
a
b
b
c
d
1
2
3
4
5
6
7
8 4
9
a
b