TM 5-6115-584.12
NAVFAC P-8-622-12
TO-35C2-3-456-1
TM-05682C-12
Figure 4-31. Replacing Oil Pressure Gauge
4-33. OIL PRESSURE GAUGE.
Iockwasher (9), clamp (4) and remove oil Pressure gauge
and bracket. Remove fitting (5) and nuts (6) attaching
On ASK equipped generators, remove oil access door.
gauge (7) to mounting bracket (8) and remove gauge (7).
a. Test. Attach a pressure gauge of known accuracy between
flexible oil line and unit pressure gauge. Operate unit for 1/2 hour
and check that both gauges read the same. At rated RPM the
normal oil pressure is 20 to 45 PSI which is dependent on air
and engine temperature, grads of oil, and wear tolerance of
engine. If the unit pressure gauge is in error by more than 5
Ibs, replace.
c. Replace. Install oil pressure gauge (7) on mounting
bracket (8) with nuts (6) two on each side of bracket (8).
Maintain gap between gauge and bracket as indicated on
figure 4-31. Position oil pressure gauge and bracket on
engine and install clamp (4), lockwasher (3) and screw (2).
Connect and tighten oil line (1).
b. Remove (see figure 4-31). Disconnect and drain
oil Iine (1) top oil pressure gauge (7), Remove screw (2),
Change 7
4-37
