Service
311053L
21
Reassembly
1. Perform the following applicable step:
-
Non-circulating Paint Guns:
Lubricate the
backup (6) and o-ring (5) and install them on the
fluid outlet port plug (4). Install the plug in the
fluid outlet port of the fluid housing (2). See F
16. Reinstall the gasket (3).
-
Circulating Paint Guns:
Reinstall the gasket (3)
in the fluid housing (2).
-
Sealant Gun:
Reinstall gasket (3).
2. Install the o-rings (22*, 23*) on the piston (21).
Install two o-rings (25*, 26*) on each of the piston
stems. If applicable, lubricate all the o-rings, the
piston, and the piston stems.
3. Install the fluid housing (2) on the piston housing
(1).
4. Reinstall the two screws (15) to secure the piston
housing to the fluid housing (2). Torque to 30 in-lb
(3.4 N•m).
5. Insert the piston (21) into the piston housing (1).
6. Remove the protective paper from the sticky side of
the gasket (13*) and adhere the gasket to the
bottom of the piston housing (1), making sure the
three holes in the gasket are properly aligned with
the matching holes in the housing.
7. Lubricate o-rings on fluid assembly with light weight
oil.
8. Insert the needle assembly (12) into the front of the
fluid housing (2). Push it straight back through the
piston.
9. Install a new gasket (11) in the fluid housing (2).
10. Lubricate the threads of the seat (10, 41). Screw it
into the fluid housing (2) and torque to 20-25 ft-lb
(27-34 N•m).
11. Install the needle stop (17) on the needle. Coat the
setscrew (16) with semi-permanent anaerobic
sealant and install the screw into the needle stop.
Torque to 6.5-7.5 in-lb (0.73-0.85 N•m). Pull on the
needle to make sure it seats fully.
Model 262625 only:
Coat the threaded end of the
needle assembly (12) with semi-permanent
anerobic sealant. Install the needle stop (17) on the
needle. Use a 7/32 deep socket to go over ball
housing on needle assembly (12). Tighten 2-4 in-lb
(0.23-0.45 N•m).
12. Install the springs (19, 20).
13. Lubricate the threads of the piston housing (1).
Screw the cap (18) onto the housing until it bottoms
out.
Model 288554 and 26C625:
Hand tighten cap (18)
until it engages gasket (40). Then tighten cap a half
turn more to ensure cap will not loosen during
operation.
14. Do not lubricate the gasket (8). Install the spray tip
(9) and gasket (8) in the tip retainer nut (7).
Models 26C624 and 26C625:
Make sure gasket
(9b) is snapped onto fluid seal (9a) and is properly
inserted into the housing. Insert tip cylinder (9c) into
the housing. Install the assembled RAC tip onto the
spray gun.
15. Screw the assembly firmly onto the gun. Tighten the
assembly with a wrench, but do not exceed 5 ft-lb
(6.8 N•m) for model 233670 gun.
16. Reinstall the gun on the manifold with the four
screws (14). Torque to 65 in-lb (7.3 N•m).
Model 26C625 only:
Reinstall the gun on the
manifold with the six screws (14). Torque to 65 in-lb
(7.3 N•m) on piston housing (1) and 80 in-lb (9 N•m)
on fluid inlet (302).
NOTICE
Install a new gasket (11) whenever you remove the
seat (10, 41) from the gun. Failure to install a new
gasket may result in fluid leaking into the air
chamber.
NOTICE
Be sure to keep the needle straight when installing
it in the piston housing. If the needle is bent it must
be replaced.