Graco B Series Instructions-Parts List Manual page 20

Pinion, Clutch, Clamp, Field & Engine
Disassembling these parts can start from the pinion
housing or from the clutch, if no pinion service is
needed.
Removing the Pinion Housing
WARNING
To reduce the risk of a serious injury due to the
sprayer starting unexpectedly, always shut off the
engine and disconnect the spark plug before
performing any checks or service.
1. Remove the two bottom screws (3) first, and then
remove the top three screws (3).
2. Pull the pinion housing (19p) away from the clutch
housing (17). The armature (9b) will come with it.
3. Pull the armature (9b) off the hub (19j – see Fig.
19) of the pinion housing.
CAUTION
Do not lose the thrust ball (19k). Refer to the
CAUTION on page 19 for more information.
NOTE: To disassemble the pinion, go to Repairing
the Pinion, page 21. To disassemble more of the
sprayer, go to page 23. To reassemble the sprayer
from this point, go to Reassembly, page 27, Step 7.
Repairing the Pinion
NOTE: Refer to Fig. 18.
NOTE: A hydraulic press is required if you purchase
the pinion parts individually. Otherwise, use Repair Kit
No. 221032, which includes the shaft and bearings
pre-assembled and lubricated.
If using Repair Kit 221032, follow Steps 1 to 5,
below.
1. Remove the small ring (19e**) from the hub (19f)
and the large ring (19m) from the bearing recess of
the pinion housing (19p).
2. Push on the front of the shaft (19b**) to force the
bearing and hub assembly out of the housing
(19p).
20 308269
If starting from the pinion housing, first follow Steps
1 to 5 of Drive Housing, on page 19, and then contin-
ue with the procedure below.
If starting from the clutch, see page 22.
Pinion Housing
3. Install the new shaft assembly into the pinion
4. Install the rings (19m and 19e**).
5. Go to Reassembly, page 27, Step 7, or continue
19p
19k
Fig. 17
Fig. 18
housing, pushing it to the shoulder of the housing
(19p).
on page 22.
see page 21 for
1
pinion
71
70
17
9b
19p
19b
71
1
70
0171
19m
19e
19f
0169