5
309032
Service
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
on page 3.
1.
Relieve the pressure.
2.
Check all parts thoroughly when disassembling,
and carefully replace any that are worn or dama-
ged.
3.
Remove bottom seat adapter (10) from grease gun
body (9). See parts listing on page 6.
4.
Remove acorn nuts (1) and bolts (17) from trigger
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.
10. Replace all parts included in service kit 243446.
11. Reassemble valve.
WARNING
To reduce the risk of serious injury after servicing
valve, always make sure the valve is in the closed
position with trigger released.
12. With trigger in free position tighten bottom nut (5)
until yoke bottoms out on rod guide, See Fig.1,
(this is the maximum flow setting). Back off nut
approximately 1/8 turn. Hold bottom nut in place
and securely tighten top nut.
13. If additional adjustment is desired, follow adjust-
ment procedure on page 4.
14. For specific operational problems, see
TROUBLE-
SHOOTING GUIDE
on page 5.
Troubleshooting Guide
Problem
Cause
Solution
Grease flows with trigger released Damaged ball
Damaged seat
Out of adjustment
Missing ball
Install service kit
Install service kit
Readjust (See Figure 1)
Install service kit
No grease flow when trigger
pulled
Out of adjustment
Plugged seat
Disassembled plunger and rod
Readjust (See Figure 1)
Clean seat
Reassemble
Grease leaking out of bottom of
gun
Loose bottom adapter
Missing copper Gaskets
Worn copper Gaskets
Tighten adapter (See Figure 1)
Install service kit
Install service kit
Grease leaking out 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
Bent pivot pin
Damaged handle
Replace guard
Install service kit
Replace trigger
