Graco Inc 313872B, 257999, 24C934, 24C932, 24C933, TI14450a Access Pistons Bulkhead Shaft

Repair

2. Use hex nut driver to remove fluid manifold (AD).

AD

TI14463a1

3.Disconnect signal cable.

4.Remove Front End, see page 33.

5.Disconnect air quick coupler (AC).

AC

TI14463a1

6.Unscrew piston safety lock assembly and remove. Inspect o-ring and replace if necessary.

TI14465a

7.Place 1/2 in. socket on the piston shaft through the front of the gun body. Entering through the rear of the gun body, place a 3/4 in. socket with extension on the rear piston. Hold piston shaft in place and remove the rear piston. Inspect rear piston o-ring and replace if necessary.

Access the

Pistons and

Bulkhead

Piston

Shaft

TI14465a

8.Entering through the rear of the gun body, place a 3/4 in. socket with extension on the bulkhead. Remove the bulkhead. Inspect bulkhead o-rings and replace as necessary.

9.Push piston shaft towards rear of gun to remove front piston and piston shaft from the gun body.

10.Use a 1/2 in. socket on the piston shaft and

15/16 in. wrench on the front piston to remove front piston from piston shaft.

11.Inspect o-rings. Replace if worn or damaged. Liber- ally lubricate o-rings then reinstall.

12.Apply medium strength threadlocker to threads then install front piston onto piston shaft. Torque to

100-110 in-lb (11.3-12.4 N•m). See Component Identification on page 16.

13.Install piston shaft and piston assembly into gun body. See Component Identification on page 16.

14.Install bulkhead onto piston shaft. Torque to

100-110 in-lb (11.3-12.4 N•m). See Component Identification on page 16.

15.Apply medium strength threadlocker to threads then install rear piston onto piston shaft. Torque to

100-110 in-lb (11.3-12.4 N•m). See Component Identification on page 16.

16.Install piston safety lock. See Component Identifi- cation on page 16.

17.Attach Front End, see page 35.

36 313872B