Great Plains YP625PD Predelivery Manual - Manual (Page 30)

26 Great Plains Manufacturing, Inc. Contents Index YP625PD/TD/925TD
401-754Q Contents Index 07/05/2011
Install Arm at Pivot
Refer to Figure 46
77. Select the ground drive arm:
402-310H GROUND DRIVE ARM WELDMENT
With the spring lug side up, align the open end of
the arm with the bearing mount holes of the mount
bracket
.
78. Select the shaft with pin , washers ,
bearing and spacer on it.
Insert the unpinned end of the shaft through the left
plate of the mount
, and part-way into the
arm .
79. Select the 23T driven pivot sprocket:
808-150C SPKT 40C23 X 7/8 HEX BORE
80. Recover the arm chain from inside the arm.
Verify that the chain is seated in both idler pulleys
(not shown). It may be necessary to remove the
guard
for inspection. Fully relax the arm
idler to provide ample chain slack.
Place the sprocket inside the chain loop.
Place both inside the pivot. Slide the shaft into
the sprocket and fully seat the shaft against the left
bearing.
81. Select the longer (7.1 cm, 2
13 ⁄
16
in) spacer:
120-263D SPACER TUBE 1 ID X 2 13/16
Add it to the unpinned end of the shaft .
82. Select the other bearing:
120-269S 3 BOLT PIVOT BRG ASSY
Add it to the shaft.
83. Select six sets saved:
803-020C NUT HEX 1/2-13 PLT
804-015C WASHER LOCK SPRING 1/2 PLT
802-082C HHCS 1/2-13X1 3/4 GR5
Loosely secure the bearings to the bracket plates.
84. Select the shorter (13 mm,
1 ⁄
2
in) spacer:
402-566D 7/8 HEX SHAFT SPACER TB X 1/2
Add it to the shaft.
85. Select the 21T driving pivot sprocket:
808-222C SPKT 40C21 X 7/8 HEX BORE
Add it to the shaft.
86. Select the lock collar:
402-058D COLLAR LOCK 7/8 HEX
Add it to the shaft.
87. Check that the shaft rotates freely. Tighten the lock
collar set screw and bearing nuts . Engage
the arm idler . See page 98 for idler tensioning.
88. Route the upper chain around the driven
sprocket . Re-engage the upper idler.
Null4:
Null4:
Null4:
Null4:
From left to right, the ordering of parts is:
a. 402-563D DRIVE HEX SHAFT
b. 805-180C PIN ROLL 1/4 X 1 1/2 LG PLT
(left in place)
c. 804-061C WASHER MACH 1.50 X 1.00 X 18GA
(quantity 2)
d. 120-269S 3 BOLT PIVOT BRG ASSY (left)
e. 402-311H DRIVE MOUNT BRACKET (left plate)
f. 120-310D SPACER TUBE 1 ID X 2.25
g. 402-310H GROUND DRIVE ARM WELDMENT
808-150C SPKT 40C23 X 7/8 HEX BORE
136-051D CHAIN RL #40 166 PITCHES
h. 120-263D SPACER TUBE 1 ID X 2 13/16
i. 402-311H DRIVE MOUNT BRACKET (right plate)
j. 120-269S 3 BOLT PIVOT BRG ASSY (right)
k. 402-566D 7/8 HEX SHAFT SPACER TB X 1/2
l. 808-222C SPKT 40C21 X 7/8 HEX BORE
136-018D CHAIN RL #40 107 PITCHES
m. 402-058D COLLAR LOCK 7/8 HEX
Figure 46
Arm Pivot Assembly
32052
178
333
318
104
171
105
170
348
108
103
171
104
179
349
107
165
6
107
349
5
171
170
178 333
318
264
104
105
310
286
348
103
104
179
165
108
177
170
5
171
178 333 318
104 105
171
170
348
108
177
6
348 108
178
103
178
104
286
310
264
179
349
165
165 286
6
107
349