Graco EM 5000 - Page 23

 
Pinion Housing
Repairing the Pinion
WARNING
To reduce the risk of serious injury , including fluid
injection or splashing in the eyes or on the skin, or
injury from moving parts, always follow the Pres-
sure Relief Procedure W arning on page 6
before checking, adjusting, cleaning, or shutting of
the sprayer . Unplug the power supply cord!
NOTE: Refer to Fig 23 for Steps 1. to 5..
NOTE: A hydraulic press is required for disassembly
and
reassembly if you purchase the pinion parts
individually. If you do not have such a press, use
Repair Kit No. 221–032, which includes the shaft
and bearings pre–assembled and lubricated.
If you are using Repair Kit 221–032, follow Steps 1. to 3.,
below.
Disassembly
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 bear -
ing
and hub assembly out of the housing (19a).
Reassembly
1. Install the shaft assembly into the pinion housing,
pushing
it to the shoulder of the housing (19a).
2. Install the rings (19k and 19m).
3. Skip ahead to Reassembly, page 30, Step 7., or
continue
on page 25.
If you purchased parts separately, use the following in-
structions. Disassemble only as far as needed for the
parts
being replaced.
Disassembly
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
and hub 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. See Fig
24. Then turn the shaft over and press out the small
bearing (19j).
Reassembly
1.
Apply lubricant to the parts as shown in Fig 23.
2. 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).
 Hub (19j) onto the shaft (19g) all the way to the
large bearing (19h).
3. Install the shaft assembly , pushing it to the shoulder
of the recess in the housing (19a).
4. Install the snap ring (19k). Install the small ring
(19m).
5. Skip ahead to Reassembly, page 30, Step 7., or
continue
on page 25.