Graco 334135B Rear Pump Rebuild Instructions, Prepare Machine for Kit Installation

Repair

Rear Pump Rebuild Instructions

The pump shaft is installed coated with Krytox grease. Wear protective gloves and cover exposed skin to avoid possible skin irritation on contact. Read Krytox MSDS to know the specifc hazards, and follow manufacturer’s warnings.

2

4

Rear Pump Assembly

1

3

1 5

1	Torque to 350 in-lb (40 N•m).
2	Lubricate shaft with Krytox grease prior to insertion
	into bearing.
3	Apply thread sealant to threads. Do not allow
	thread sealant to get into seat area.
4	Piston shafts must be installed from this direction.
	Damage to the shaft seal may result if installed from
	the opposite direction.
5	Fasten in a crisscross pattern.

FIG. 12

Prepare Machine for Kit Installation

1.Drain the pump. Empty the tanks. Perform shots repeatedly until no material comes out of the dis- pense valve.

2.Relieve pressure. See Pressure Relief Procedure, page 33.

3.Shut down the machine. See Shutdown, page 34.

4.Disconnect the pressurized air input hose.

5.Remove machine shield screws.

6.Remove the machine shield.

7.Disassemble the Rear Pump Assembly.

44 334135B