Air Box Pressure
WARNING
Mercury is a toxic material. Avoid contact with skin. Clean up any spilled mercury. Dispose
of small amounts of mercury by wiping with aluminum foil. Failure to comply may result in
injury, illness, or death to personnel.
1.
Remove one tube connector (Figure 12, Item 41) from u-tube manometer (Figure 12, Item 46) by
rotating counterclockwise.
2.
Turn remaining tube connector (Figure 12, Item 42) clockwise until fully engaged and then back out one
full turn.
3.
Add mercury to u-tube manometer (Figure 12, Item 46) until mercury level (Figure 12, Item 45) is opposite
zero mark on scale with u-tube manometer vertical.
4.
Install tube connector (Figure 12, Item 41) until fully engaged and then back out one full turn.
5.
On models 5063-5392, 5063-5393, and 5063-539L, disconnect air box drain tube (Figure 12, Item 44) from
elbow (Figure 12, Item 43) in cylinder block. Plug air box drain tube routed to engine crankcase.
46
45
44
43
42
41
LEFT SIDE REAR
MAINT_433
Figure 12.
Air Box Pressure Check.
NOTE
On models 5063-5392, 5063-5393, and 5063-539L ensure air box drain tube and elbow
are not plugged with sludge or debris.
6.
Connect nonmetallic tubing (Figure 13, Item 48) to air box drain tube (Figure 13, Item 47) and to tube
connector (Figure 13, Item 41). Close tube connector connected to nonmetallic tubing.
7.
Mount u-tube manometer (Figure 13, Item 46) in a vertical position and adjust scale until zero mark is
opposite mercury level.
TM 9-2815-205-24
0101
0101-12