Pratt & Whitney Rzeszów S.A.
MAINTENANCE MANUAL
PZL-10W ENGINE
1992.08.28
72-02-00
Page 135
Export Control Classification: PL/UE 9E999
D.
Oil system.
(1)
Oil pressure fluctuations.
(a)
Possible causes: small oil quantity in the oil tank; fine oil filter contaminated; oil delivery pump defective.
(b)
Schematic procedure: