Graco GM3500 SPRAYER 231-078 Instructions And Parts List page 22

REPAIR
Repairing
the
Pinion
WARNING
I f
you havepurchasedpartsseparately, use the following
To reduce the risk of serious bodily injury, including
instructions, disassembling only
as
far
as
needed for the
fluid injection, splashing fluid in the eyes oron the
parts being replaced.
skin, or injury from moving parts, always follow the
Pressure
Relief
Procedure Warning
on page 13
NOTE: The old large bearing (19d) will be damaged
before repairing any part of the sprayer. Disconnect
when removed. Have an extra one on hand if you
the spark plug cable.
need to remove it for any reason.
1.
If replacing the small bearing ( I ~ c ) , press the old one
out of the pinion housing (19n).
NOTE: Refer to Fig 23-1 unless otherwise instructed. 2. Remove the small ring (19e) from the hub and the
NOTE: A hydraulic press is required for disassembly
large ring (19k) from the bearing recess.
and reassembly if you purchase the pinion parts
3.
Push on the front
o f
the shaft (1 9b) to force the bear-
individually. If you do not have such a press, use ing and hub assembly out of the housing.
bearings pre-assembled and lubricated.
RePairKit221-043, which includestheshaft and 4.
using
a
hydraulic press,
place pieces of Steel bar
lfyouareusing the RepairKit,
221-043,
follow Steps 1 to
4, below.
-
stock on the inner race of the large bearing (19d) and
press the shaft through the hub and bearing. See Fig
23-2.
1.
2.
3.
4.
6.
7.
Remove the small ring (19e) from the hub and the
large ring (19k) from the bearing recess.
ing and hub assembly out of the housing.
Push on the front of the shaft (1 9b) to force the bear-
Press the m a i l bearing (19c) out of the pinion hous-
ing (1 9n). Remove the new bearing from the shaft
of
the kit and press it into the housing. See DETAIL A in
Fig 23-1.
shoulder of the housing (19n).
Install the shaft assembly (19a), pushing
it
to the
Install the rings (19e and 19k).
Skip ahead to Reassembly, page 29, Step 7, or con-
tinue at the next section.
5.
Apply lubricant to the parts as shown in Fig 23-1.
6.
Press fit the following parts:
0
Small bearing (19c) into rear of housing
(19n). See DETAIL A in Fig 23-1.
Large bearing (19d) to shoulder of 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, page29, Step 7, orcon-
tinue at the next section.
22 307-893