SprayTECH GPX 1600 Скачать руководство пользователя страница 11

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Replacing the Slider Assembly and
Slider Housing

1. Start the engine (refer to the procedures in the Operation

section of this manual). Turn the pressure control knob
clockwise to its maximum pressure setting.

2. Toggle the pump ON/OFF switch between the ON and

OFF positions in short bursts until the slider assembly
stops in a position where the fluid section connecting pin
and retaining ring are visible through the slot in the slider
housing.

3. Turn off the engine and perform the Pressure Relief

Procedure.

4. Using a Phillips

screwdriver,
remove the four
front cover
screws. Remove
the front cover.

5. Slide the retaining

ring up on the
slider assembly to
expose the
connecting pin.

6. Push the

connecting pin
forward through
the slider
assembly and
piston. The
connecting pin will
fall out from the rear window of the slider housing where it
can be retrieved.

7. Using a 7/8” open-end wrench, loosen and remove the

fluid hose from the fitting on the back of the fluid section.

8. Using a 21/4” wrench, loosen the fluid section jam nut.

Turn the fluid section counterclockwise by until it
disengages from the slider housing.

9. Using a 5/16” hex wrench, remove the four socket screws

and lock washers that secure the slider housing to the
pump housing.

10. Remove the slider housing and slider assembly by pulling it

straight out from the pump housing. The slider housing
assembly will disengage from the pump housing dowel pins
and the connecting rod will disengage from the crankshaft.

11. Remove the slider assembly from the slider housing by

grasping the bearing end of the connecting rod and lifting
it straight out from the slider housing.

12. Check the parts for wear.

a. If the slider housing bushing is scored or out of round it

should be replaced.

b. If the slider assembly is scored or the connection

between the connecting rod and slider assembly
exhibits movement other than pivoting movement, the
slider assembly should be replaced. The slider
assembly also should be replaced if the connecting rod
bearing shows signs of wear.

c. Any parts that will be reused should be cleaned

thoroughly, including the connecting rod. Also, clean the
crankshaft pin that the connecting rod bearing rides on.

d. If a new slider assembly will be used, remove the

retaining ring from the bottom of the old slider assembly
and slide it onto the new assembly so that it rests
above the connecting pin hole.

13. Lubricate the inside diameter of the slider housing and the

outside diameter of the slider assembly with oil. Fill the
slider cup with Lubriplate 3000W grease (the slider cup is
the area on the slider assembly where the connecting rod
and slider housing join and pivot).

14. Insert the slider assembly into the bushing end of the

slider housing.

Connecting

Fitting

Retaining

Ring

Slider

Assembly

Pump

Housing

Front

Cover

Screw

Slider

Housing

Jam Nut

Fluid

Section

Front

Cover

15. Hold the assembly up to the pump housing, lining up the

connecting rod with the crankshaft pin and the pump
housing dowel pins with their mating holes on the slider
housing. Slide the assembly onto the crankshaft pin and
pump housing dowel pins until the slider housing bottoms
out on the pump housing. Make sure the grease fitting on
the connecting rod is facing the open side of the pump
housing.

16. Install the the four socket screws and lock washers that

secure the slider housing to the pump housing. Tighten in
a diagonal pattern and torque to 400–440 in./lbs.

17. Lubricate the connecting rod bearing with Lubriplate 1242

grease by inserting the end of a grease gun onto the
grease fitting on the end of the crankshaft pin. Lubricate
the main housing bearing by inserting the end of a grease
gun onto the grease fitting in the center of the crankshaft.
Also, lubricate the connecting rod bushing by inserting the
end of a grease gun onto the grease fitting on the
connecting rod.

18. Position the front cover over the pump housing. Secure

the front cover using the four front cover screws.

19. Apply blue Loctite to the bottom 3–4 threads on the fluid

section cylinder.

20. Turn the fluid section jam nut clockwise until it is flush

against the top of the cylinder.

21. Lubricate the first several threads at the top of the cylinder

with anti-seize compound.

22. Thread the cylinder into the pump housing, turning

clockwise. When the connecting pin hole on the piston
rod lines up with the hole in the slider assembly, insert the
connecting pin.

23. Slide the retaining ring down on the slider assembly to

cover the connecting pin.