7
MAINTENANCE
With proper care, your Model 30 series GunJet will give you reliable service. To
maintain this performance, parts should be inspected regularly and replaced
when necessary with genuine Spraying Systems Co. parts.
DISASSEMBLY PROCEDURE
(See Figure 1 and parts list PL 30A & 30W)
If it becomes necessary to disassemble this unit, follow these steps:
1.
Make sure all air, electrical, and liquid lines to the pump are
turned off.
2.
Release all the pressure and liquid (from the hose to GunJet) by
operating Trigger until fluid ceases to flow.
3.
Set Trigger Lock (21) in locked position.
4.
Remove gun from hose.
5.
Remove 7 Screws (1).
6.
Remove Right Hand Housing (2), Trigger Lock (21) and
Lock Spring Ring (20).
7.
Remove Body and Trigger as a subassembly (3) thru (19) from Left
Hand Housing (2).
8.
Remove Trigger (18) and Trigger Guide (19).
9.
Remove #6 Burr (15), Spring (14), Stem Nut (13).
10.
Using the hex on the Body (5) as a back-up wrenching surface, loosen
Cap (3) and Packing Screw (12).
11.
Remove Cap (3) and Valve Seat (4).
12.
Holding Packing Screw (12) unscrew Body (5) from Stem Assembly (6)
thru (12).
13.
Remove Gasket (11) from Packing Screw (12).
14.
Remove Packing Screw (12), Cup Packing (9), Washer (8), and Main
Spring (7).
15.
If required, Trigger Guide (19) may be removed from Trigger (18) by
pressing or driving out Roll Pin (16).
16.
If required, Roll Pin (17) may be removed from Trigger (18) by pressing
or driving out.
