Graco GM 3500 Instructions-Parts List Manual page 23

DETAIL A
CUTAWAY VIEW OF
PINION HOUSING (19n)
BACK OF
PINION
HOUSING
(19n)
PRESS FIT
SMALL
BEARING (19c)
AND CLUTCH
ROLLER (S)
HERE
Lubricate
exterior
Fig 23–1
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
pre–assembled and lubricated.
NOTE: Refer to Fig 23–1 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 bear-
ing and hub assembly out of the housing (19n).
3. Press the small bearing (19c) out of the pinion hous-
ing (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 29, Step 7, or continue on
page 24.
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 re-
moved. 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). Re-
move the snap ring (19k) from the bearing recess of
the housing (19n).
PINION HOUSING
19g
19h
19j
Lubricate exterior
19k
19a
19m
19c
Lubricate inner and
outer diameters
ROUND STEEL
BAR TO PUSH
ON SHAFT (19b)
LARGE
BEARING (19d)
PRESS PLATFORM
PLACEMENT OF STEEL BLOCKS AND BAR
STOCK WHEN PRESSING OFF LARGE BEARING
Fig 23–2
3. Push on the front of the shaft (19b) to force the bear-
ing and hub assembly out of the housing (19n).
4. Using a hydraulic press, place pieces of steel bar
stock on the inner race of the large bearing (19d) and
press the shaft through the hub and bearing. See Fig
23–2.
5. Apply lubricant to the parts as shown in Fig 23–1.
6. Press fit the following parts:
Small bearing (19c) and then the roller clutch
(19s), with the directional arrow facing the samll
bearing, into the rear of the housing (19n). See
DETAIL A in Fig 23–1.
Large bearing (19d) to shoulder of the shaft
(19b).
Hub (19f) onto the shaft (19b) all the way to the
large bearing (19d).
7. Install the shaft assembly (19a), pushing it to the
shoulder of the housing (19n).
8. Install the rings (19e and 19k).
9. Skip ahead to Reassembly, page 29, Step 7, or con-
tinue on page 24.
19f
19d
Lubricate inner
19b
and
Lubricate teeth outer diameters
19s
Directional arrow on roller clutch
must face the small bearing (19c)
HYDRAULIC
PRESS
(19f)
HUB
STEEL BAR
STOCK
É É É É É É
TWO STEEL
BLOCKS
É É É É É É
19e