NPK PH06 - Gh06, Gh07, Gh1, Gh2, Gh3

9
HAMMER CONNECTION PORT
GH06, GH07, GH1, GH2, GH3
For the GH06, GH07, GH1, GH2 and GH3 hammers, the underwater port (17)
must be machined into the impact ring (J). A 37/64 tap drill and a 3/8-19 npt tap
must be used at underwater connection port (17). See illustrations and chart
(below) for port locations and size.
HAMMER MODEL
d91
d92
d93
GH06
16.5 mm
15 mm
DRILL 15 mm dia. (19/32”) to center
TAP (3/8” – 19 NPT)
CHAMFER 1.5 mm x 45

GH07
16.5 mm
15 mm
GH1
25 mm
-
GH2
20 mm
-
GH3
16 mm
-
1. Install a heavy duty adapter elbow
(CF) into the previously machined
underwater connection port (17) to
connect to the air hose fitting.
2. Remove the drain plug (B) from the hammer body (A) (located on the left side
of the hammer body (see above) and replace with solid ¼” NPT plug, K023-
6660 (AS1).
3. Attach air line from air compressor to the adapter fitting on the hammer.
Hoses must be secured and protected from damage during operation.
1 = TOOL END OF HAMMER
2 = GAS END OF HAMMER