Instructions / Assembly

ManualsBrandsGraco ManualsPaintTC Pro Triax Replacement Pump for Cordless

4 3A4788B

Enclosure Cover

Removal/Replacement

Before servicing the sprayer the enclosure cover must

be removed. See assembly drawings.

1. Perform Pressure Relief Procedure, on page 1.

2. Disconnect power (remove battery or unplug power

cord).

3. Remove cup assembly.

4. Turn Prime Pump/Spray knob forward to spray posi-

tion

5. Remove cross-head screw (37a) from Prime

Pump/Spray knob and remove knob.

6. Remove seven cross-head screws (37) from

sprayer enclosure and remove enclosure cover

(31).

7. Install new enclosure cover (31). Secure with seven

cross-head screws (37). See Assembly Drawing for

torques.

8. Rotate prime valve stem so the valve stem pocket is

pointed towards the rear of the sprayer.

9. Install Prime Pump/Spray knob (18) so the knob is

pointing forward. Install cross-head screw (37a).

See assembly drawings for torque.

10. Knob will only rotate forward and down.

11. After assembly is complete, perform Assembly

Verification, on page 7.

Outlet Valve Replacement

Worn outlet valves are easily replaced without removing

the enclosure cover. Before servicing the sprayer, pump

pressure must be relieved.

1. Perform Pressure Relief Procedure, on page 1.

2. Disconnect power (remove battery or unplug power

cord).

3. To remove the three outlet valves, remove two

pump plugs (4b) and front valve (25). On the

Ultra MAX, Ultimate MX, and TC PRO PLUS

(Brushless) sprayers use the removal/installation

tool provided to remove the front valve.

4. Separate the outlet valve from the front valve. Save

front valve for reuse.

5. Replace o-ring (51) on front valve (25).

6. Make certain new o-rings (50) are on the new pump

plugs (4b).

7. Assemble new outlet valves, as shown. Leave a

space between the end of the plug or front valve

and shoulder on the outlet valve assemblies.

8. Check ball should move freely against the spring in

the retainer.

9. Install two pump plugs and front valve. On the

Ultra MAX, Ultimate MX, and TC PRO PLUS

(Brushless) sprayers use the removal/installation

tool provided to install the front valve. Torque front

valve and pump plugs, see Assembly Drawing for

torques.

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NOTICE

Do not push outlet valves all the way into the valve

plugs or front valve. If outlet valves are pushed all

the way into the valve plugs or front valve the

sprayer will spray with reduced performance.

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3/16"

(5mm)

(0mm)

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