Graco 242057 Manual De Usuario
Service
4
309032L
Service
Refer to Parts Drawing, page 5, for following instruc-
tions.
tions.
Disassembly
1.
Relieve the pressure. See Pressure Relief Proce-
dure on page 3.
dure on page 3.
2.
Check all parts thoroughly when disassembling and
carefully replace any worn or damaged parts.
carefully replace any worn or damaged parts.
3.
Remove bottom seat adapter (10) from grease fun
body (9).
body (9).
4.
Remove acorn nuts (1) and bolts (17) from trigger
guard (12). Remove trigger guard (12).
guard (12). Remove trigger guard (12).
5.
Remove outlet adapter (7).
6.
Remove hex nuts (5).
7.
Remove yoke (16).
8.
Remove rod guide (18) from grease gun body (9).
9.
Push plunger rod (15) through seal (4). Be careful;
seat (14), ball (2), and copper gasket (6) will fall out
bottom.
seat (14), ball (2), and copper gasket (6) will fall out
bottom.
10. Replace all parts included in service kit 243446.
11. Reassemble valve.
12. With trigger in free position tighten bottom nut (5)
until yoke bottoms out on rod guide (this is the max-
imum flow setting. (F
imum flow setting. (F
. 1) Back off nut approxi-
mately 1/8 turn. Hold bottom nut in place and
securely tighten top nut.
securely tighten top nut.
13. If additional adjustment is desired, follow adjustment
procedure on page 3.
14. For specific operational problems, see Trouble
Shooting.
Troubleshooting
To reduce the risk of serious injury after servicing
valve, always make sure the valve is in the closed
position with trigger released.
valve, always make sure the valve is in the closed
position with trigger released.
Problem
Cause
Solution
Grease Flows with trigger release
Damaged Ball
Install Service Kit
Damaged Seat
Install Service Kit
Out of Adjustment
Readjust, see Adjustment, page 3
Missing Ball
Install Service Kit
No grease flow when trigger pulled
Out of Adjustment
Readjust, see Adjustment, page 3
Plugged Seat
Clean seat
Disassembled Plunger and Rod
Reassemble
Grease is leaking out of bottom of gun
Loose Bottom Adapter
Tighten adapter (F
Missing Copper Gasket
Install Service Kit
Worn Copper Gasket
Install Service Kit
Grease is leaking out of the top of gun
Worn Seal in top of gun
Install Service Kit
Short seal life
Worn plunger rod
Install Service Kit
Trigger will not move
Bent guard
Replace guard
Bent pivot pin
Install Service Kit
Damaged handle
Replace trigger