DESCRIPTION
The lubrication system is a full flow filtration pressure feed type. The oil pump is mounted in the timing chain
cover and is driven by the crankshaft
OPERATION
OPERATION
Fig. 175: ENGINE LUBRICATION
Courtesy of CHRYSLER LLC
Oil from the oil pan is pumped by a internal gear type oil pump directly coupled to the crankshaft. The pressure
is regulated by a relief valve located in the timing chain cover. The oil is pumped through an oil filter and feeds
a main oil gallery. This oil gallery feeds oil under pressure to the main and rod bearings, camshaft bearings.
Passages in the cylinder block feed oil to the hydraulic lifters and rocker shaft brackets which feeds the rocker
arm pivots .
DIAGNOSIS AND TESTING
ENGINE OIL PRESSURE
1 - OIL SUPPLY FOR BALL SOCKET
THROUGH PUSH ROD
7 - OUTER ROTOR
2 - OIL SUPPLY PASSAGE FROM SHAFT TO
ROCKER ARM
8 - INNER ROTOR
3 - ROCKER SHAFT
9 - RELIEF VALVE
4 - OIL FLOWS TO ONLY ONE PEDESTAL ON
EACH HEAD; THIRD FROM REAR ON RIGHT
HEAD, THIRD FROM FRONT ON LEFT HEAD
10 - OIL PAN
5 - ROCKER SHAFT TOWER
11 - OIL SCREEN
6 - CRANKSHAFT
12 - OIL PUMP CASE
2010 Jeep Wrangler Sport
2010 ENGINE 3.8L - Service Information - Wrangler
viernes, 1 de octubre de 2021 05:18:32 p. m.
Page 144
© 2011 Mitchell Repair Information Company, LLC.
