Graco GM3500 Instructions-Parts List Manual page 21

Lubricate inner and
outer diameters
Detail A
Lubricate teeth
Directional
arrow on roller
clutch must
face the small
bearing (19c)
Lubricate exterior
Back is shown
Press fit small
bearing (19c)
and clutch roller
(s) here
Fig. 14
Repairing the Pinion
NOTE: Use a hydraulic press if you purchase the
pinion parts individually. Otherwise, use Repair Kit No.
223–189, which includes the shaft and bearings
preassembled and lubricated.
NOTE: Refer to Fig. 14 except where noted.
If using Repair Kit 223–189 , follow Steps 1 to 6, below.
1. Remove the small ring (19e) from the hub (19f)
and the large ring (19k) from the bearing recess of
the housing (19n).
2. Push on the front of the shaft (19b) to force the
bearing and hub assembly out of the housing
(19n).
3. Press the small bearing (19c) out of the pinion
housing (19n). Remove the new bearing from the
shaft of the kit and press it into the housing. See
Detail A.
4. Install the shaft assembly (19a), pushing it to the
shoulder of the housing (19n).
5. Install the rings (19e and 19k).
6. Go to Reassembly, page 27, Step 7, or continue
on page 22.
If you purchased parts separately, follow steps 1 to
9, below. Disassemble only as far as needed for the
parts being replaced.
NOTE: The old bearing (19d) will be damaged as it is
removed. Have one on hand if you need to remove it
for any reason.
1. If replacing the small bearing (19c) or roller clutch
(19s), press the old ones out of the pinion housing
(19n).
2. Remove the small ring (19e) from the hub (19f).
Remove the snap ring (19k) from the bearing
recess of the housing (19n).
Pinion Housing
19n
19g
19j
19h
3. Push on the front of the shaft (19b) to force the
4. Using a hydraulic press, place pieces of steel
5. Apply lubricant to the parts as shown in Fig. 14.
6. Press fit the following parts:
7. Install the shaft assembly (19a), pushing it to the
8. Install the rings (19e and 19k).
9. Skip ahead to Reassembly, page 27, Step 7, or
19k
19a
19m
19c
KEY
A Round steel bar to
push on shaft (19b)
B Hydraulic press
C Steel bar stock
D Two steel blocks
E Press platform
Fig. 15
bearing and hub assembly out of the housing
(19n).
bar stock on the inner race of the large bearing
(19d) and press the shaft through the hub and
bearing. See Fig. 15.
Small bearing (19c) and then the roller clutch
(19s), with the directional arrow facing the
small bearing, into the rear of the housing
(19n). See Detail A in Fig. 14.
Large bearing (19d) to shoulder of shaft (19b).
Hub (19f) onto the shaft (19b) all the way to
the large bearing (19d).
shoulder of the housing (19n).
continue on page 22.
19f
19d
19b
19s
B
A
19f
C
19d
É É É É É É É É
D
É É É É É É É É
E
19e