Graco Roof Rigs 224483 Instructions-Parts List Manual page 25

CUTAWAY VIEW OF
PINION HOUSING (19a)
0041
Lubricate exterior
Fig. 21
Repairing the Pinion
NOTE: Refer to Fig. 21 except where noted.
NOTE: A hydraulic press is required if you purchase the
pinion parts individually.Otherwise, use Repair
Kit No. 221–032, which includes the shaft and
bearings pre–assembled and lubricated.
If using Repair Kit 221–032, follow Steps 1 to 5, below .
1. Remove the small ring (19m**) from the hub (19j) and
the large ring (19k) from the bearing recess of the
pinion housing (19a).
2. Push on the front of the shaft (19g**) to force the
bearing and hub assembly out of the housing (19a).
3. Install the new shaft assembly into the pinion hous-
ing, pushing it to the shoulder of the housing (19a).
4. Install the rings (19k and 19m**).
5. Go to Reassembly, page 31, Step 7, or continue on
page 26.
PLACEMENT OF STEEL BLOCKS WHEN
PRESSING OFF LARGE BEARING (19h)
HYDRAULIC
PRESS
ROUND STEEL
BAR TO PUSH
ON SHAFT
(19g)
LARGE
BEARING
(19h)
PRESS PLATFORM
Fig. 22
Pinion Housing
BACK OF PINION HOUSING (19a)
PRESS PINION ASSEMBLY
IN HERE
19b
19a
19c
19d
19c
Lubricate exterior
HUB (19J)
STEEL BAR
STOCK
TWO STEEL
BLOCKS
(only one shown)
0043
19k
19f**
Lubricate inner and
outer diameters
**Included in Repair Kit 221–032
If purchasing parts separately, use these instructions.
Disassemble as far as needed for the parts being
replaced.
NOTE: The old bearings (19h and 19f) will be damaged
when removed. Have extra ones on hand if you
need to remove them for any reason.
1. Remove the small ring (19m) from the hub (19j).
2. Remove the snap ring (19k) from the bearing recess
of the pinion housing (19a).
3. Push on the front of the shaft (19g) to force the bear-
ing (19h) and hub (19j) assembly out of the housing.
4. Using a hydraulic press, place pieces of steel bar
stock on the inner race of the large bearing (19h) and
press the shaft through the hub and bearing. Then
turn over the shaft and press out the small bearing
(19f). See Fig. 22.
5. Apply lubricant to the parts as shown in Fig. 21.
6. Press fit the following parts: Large bearing (19h) to
the large shoulder of the shaft (19g). Small bearing
(19f) to the shoulder of the shaft (19g).
onto the shaft (19g) all the way to the large bearing
(19h).
7. Install the shaft assembly, pushing it to the shoulder
of the housing (19a).
8. Install the snap ring (19k). Install the small ring
(19m).
9. Go to Reassembly, page 31, Step 7, or continue on
page 26.
19m**
19j**
19h**
Lubricate inner and
outer diameters
19g**
Lubricate teeth
Hub (19j)
0169