Graco 312068M important safety instructions Hydraulic Cylinder, Tools Required

Hydraulic Cylinder

For repairs, order Hydraulic Cylinder Repair Kit 296785.

Disassembly

Tools Required

•Two - 1 in. open-end wrench

•Two - 1/2 in. open-end wrench

•O-ring pick

1.Relieve pressure, page 3.

2.Turn OFF the main disconnect and lock out power at the source.

CAUTION

In the following step, attach the clamps to the port blocks of the assembly. Attaching clamps to any other part of the assembly may result in significant damage when breaking loose the baffle jam nut and clevis.

3.Clamp the hydraulic cylinder to a flat surface using c-clamps or another strong clamping device, ensur- ing that the cylindrical spacer (114) is to the right.

4.Using the 1/2 in. open-end wrenches, loosen and remove four hexagonal spacers (113) to create room to rotate the clevises.

114

TI11289a1

The clevises and the baffle jam nut were installed with high strength thread sealant. The following steps will require significant force to break loose the baffle jam nut and clevises.

Repair

5.Using the 1 in. open-end wrench and the 1 in. impact wrench, rotate the baffle jam nut away from the right clevis until one of them breaks loose.

TI11285a1

If the left clevis and baffle jam nut break loose from the hydraulic piston shaft:

6.Remove the clevis and baffle jam nut.

7.Remove the lubricator adapter (120).

8.Loosen and remove the remaining hex

spacers (113) and smooth spacer (114), keeping the tie rods in place.

9.Remove the left retainer plate (101).

10.Remove the tie rods (115).

11.Remove the left port block and rod bushing assem- bly.

12.Slide the piston and everything attached to it out the right side of the cylinder by holding the assembly by the cylinder and pushing the left end of the piston shaft against a flat surface.

13.Using a c-clamp, secure the port block (116) of the remaining assembly.

14.Keeping the piston shaft from rotating using a 1/2 in. wrench on the piston shaft flats and using a 1 in. impact wrench on the right clevis, break loose and remove the right clevis.

15.Remove the activator plate (119) and modified bushing (118).

16.Remove the retainer plate (101).

312068M 9