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Line Painter 1200 Page 5 – 31 Paint System
8. If necessary, remove fittings in filter (item 7) and/or
pump head (item 16) by sliding retainer and pulling fit-
ting from housing. Remove and discard o–rings (item 8).
Inspection
1. If paint has dried on internal pump parts, compo-
nents or complete pump replacement will most likely be
required.
IMPORTANT: Do not attempt to clean internal pump
components with solvents as component damage
will occur.
2. Inspect check valve kit and diaphragm assembly for
deformation, erosion of sealing areas or debris. If indi-
vidual valves are damaged, replace check valve kit. If
wobbler plate/diaphragm is damaged, replace pump.
3. Inspect pump endbell and drive housing bearings.
Bearings should rotate freely with no evidence of wear
or roughness. Bearing seals should be intact and show
no signs of lubricant leakage.
Assembly (Fig. 32)
1. If bearing was removed from pump endbell, install
new bearing into endbell.
IMPORTANT: When assembling pump, make sure
to lower pump head onto check valve kit to keep out-
let check valves in position.
2. Place check valve kit onto wobbler plate/diaphragm
assembly (Fig. 35). Position outlet check valves to top
of check valve kit.
3. Lower pump head onto valve kit aligning diagonal
line made during disassembly (Fig. 33).
4. Install five (5) shorter (1.5” (38.1 mm) length) screws
with lock washers and flat washers to secure pump head
to wobbler plate/diaphragm assembly. Tighten screws
in a crossing pattern and in three equal steps to a final
torque from 25 to 30 in–lb (2.8 to 3.4 N–m). DO NOT
over tighten screws.
5. Position gasket and end bell to pump assembly
aligning diagonal line made during disassembly (Fig.
33).
6. Install five (5) longer (2” (50.8 mm) length) screws
with flat washers to secure pump assembly to endbell.
Tighten screws in a crossing pattern and in three equal
steps to a final torque from 25 to 30 in–lb (2.8 to 3.4
N–m). DO NOT over tighten screws.
7. If pump drive housing was disassembled:
A. Press bearings onto drive shaft. Make sure bear-
ings contact drive shaft shoulder.
B. Slide drive shaft and bearings into housing.
C. Install retaining rings into pump drive housing
grooves.
8. Apply antiseize lubricant to drive shaft. Position
pump gasket to pump housing. Slide spray pump onto
drive shaft. Align tab on pump with slot on pump drive
housing.
9. Secure spray pump to pump drive housing with two
(2) socket head screws and lock washers. Torque sock-
et head screws from 22 to 28 in–lb (2.5 to 3.2 N–m). DO
NOT over tighten screws.
10.If fittings and/or filter were removed from pump as-
sembly, install new o–ring, slide fitting or filter into hous-
ing and secure with retainer.
1. Spray pump
2. Pump gasket
3. Pump drive housing
4. Lock washer
5. Socket head screw
6. Retaining ring
7. Drive shaft
8. Ball bearing
Figure 34
22 to 28 in–lb
(2.5 to 3.2 N–m)
22 to 28 in–lb
(2.5 to 3.2 N–m)
2
3
4
1
5
6
7
6
8
4
5
1. Wobbler plate/diaphragm assembly
2. Check valve kit
3. Outlet check valve (5 used)
4. O–ring
Figure 35
1
3
2
4
Paint
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