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307-735 19
REPLACING THE DRIVE ASSEMBLY
WARNING
To
reduce the risk of serious bodily 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 Warning on page 14 be-
fore
checking, adjusting, cleaning or shutting of
f
the
sprayer.
Unplug the power supply cord.
NOTE:
Refer to Fig 17 for this procedure.
1.
Remove the displacement pump. See page 16.
2. Remove
the two screws (20). Pull the connecting
rod
and
bearing assembly (C) off the crankshaft (D).
3. Remove the screws (55d and 55f) and pull the drive
housing
(A) off the motor housing (B).
4. Remove
the screws (55c) and pull
the motor housing
(B)
of
f the motor
.
5. Clean
the gear (37) and inspect
it for wear or damage.
Replace if necessary. To remove, drive out the pin
(27) and pull the gear off the motor shaft (E). Apply
molybdenum
disulfide spray lubricant to the gear
, al
-
low to dry, then apply industrial-grade, heavy-duty,
extreme-pressure,
lithium-soap grease.
6. Install
the new drive assembly in the
reverse order of
removal.
Fig
17
55c
55b
27
55f
55e
55b
55c
55a
55d
B
A
55g
Apply
molybdenum disulfide spray
lubricant; allow to dry;
then apply industrial-grade,
heavy-duty
, extreme-pressure,
lithium-soap grease
37
D
C
20
E