18 309117
Service
Items Needed for Service
Gun Tool – provided
Packing Installation Tool – provided
Needle Wrench – provided
Adjustable Wrench
Pliers
O-ring Pick
Lubricant part no. 111265;
see
Accessories
to order
Compatible Solvent
Repair Kit 241619
NOTE:
Order Repair Kit 241619. For the best results,
use all the new parts in the kit. Kit parts are marked
with an asterisk, for example (7*). Refer to pages 22
and 24.
Fan Valve Repair
WARNING
INJECTION HAZARD
To reduce the risk of a fluid injection
injury, follow the
Pressure Relief Proce-
dure
on page 9 before checking or
servicing any of the system equipment and when-
ever you are instructed to relieve pressure.
1.
Relieve the pressure.
2.
Unscrew the fan valve packing nut (A) from the
back of the gun body (1). Slide the fan valve
assembly (28) out of the gun body. See Fig. 19.
3.
Remove the retaining ring (28b) from the fan valve
shaft (B). Carefully remove the two u-cups (28a)
from the packing nut (A). Be careful not to damage
the packing groove sealing surfaces.
4.
Install the u-cups (28a*) in the packing nut (A) with
the lips of the u-cups facing out of the packing nut,
toward the gun body (1).
5.
Reinstall the fan valve assembly (28) into the gun
body (1). Screw the packing nut (A) into the gun
body. Torque to 125–135 in-lb (14–15 N
m).
Fig. 19
1
2
A
1
28
28b
28a*
B
Lips face out of nut, toward gun body (1).
Torque to 125–135 in-lb (14–15 N
m).
1
2
TI0393
