
12 | IW16 Service Manual
Orientation of Insert Seals
Main Shaft
Idler Gear
Relief Adjustment
Screw
03252
00016
Insert
00717
03252
00717
00016
10. Inspect the bushings. The insides of the bushings should be gray in color. If yellow-bronze shows, replace the bushing.
11. Inspect the idler and main shafts for wear. Replace if necessary.
12. Inspect the gear chamber. The chamber should be polished and not rough or grooved.
13. Check each gear and insure they have flat, straight tips. Each tooth should have a smooth polish. Replace the gears is damage or cracking is present.
Remove the Valve Spool
1. Remove the roll pin that holds the trigger to the handle.
2. Pull the trigger out of the bottom of the handle.
3. Remove the spring cap, headed push pin, valve spool, relief seat, poppet, springs and spring rest from the handle.
4. Replace exposed seals during reassembly.
Note: During reassembly, ensure that seals 22064, 06533 and 00026 are in their proper position inside the spool cap, as shown in the seal orientation graphic
below.