2 drilling and tapping the bulkhead port, 1 a port location on the ifs clamshell housing, 3 installing the air locker – ARB RD197 User Manual
Page 15: Drilling and tapping the bulkhead port, Port location on the ifs clamshell housing
3 Installing the Air Locker
13
3.2
Drilling and Tapping the Bulkhead Port
An airline
port must be drilled and tapped through the differential
housing to mount the bulkhead fitting into.
3.2.1
A
Port Location on the IFS Clamshell Housing
Figure 6.
On the non-pinion side of the clamshell, cover the bearing area with
a rag to protect from metal filings.
Drill through the housing square to the outside surface using a
11.2mm [7/16”] drill in the position shown in Figure 6.
NOTE :
When viewed from inside the housing the bulkhead
port position must be as shown in Figure 7.
Tap the hole from the outside using a ¼” NPT pipe tap.
Remove any sharp edges from the hole that may chip-off and fall
into the housing.
Carefully remove the rags and inspect with a service light inside the
housing to insure no drill filings are left behind.
Figure 7.